EESchema Schematic File Version 4 EELAYER 30 0 EELAYER END $Descr USLetter 11000 8500 encoding utf-8 Sheet 1 1 Title "Thomas Henry 555 VCO" Date "2021-07-24" Rev "1.1" Comp "Nathan Schmidt" Comment1 "" Comment2 "" Comment3 "" Comment4 "" $EndDescr $Comp L Connector_Generic:Conn_02x08_Odd_Even J1 U 1 1 5F670312 P 5150 7400 F 0 "J1" H 5200 7917 50 0000 C CNN F 1 "Conn_02x08_Odd_Even" H 5200 7826 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Horizontal" H 5150 7400 50 0001 C CNN F 3 "~" H 5150 7400 50 0001 C CNN 1 5150 7400 1 0 0 -1 $EndComp $Comp L power:GND #PWR0101 U 1 1 5F6703E3 P 4750 7500 F 0 "#PWR0101" H 4750 7250 50 0001 C CNN F 1 "GND" H 4755 7327 50 0000 C CNN F 2 "" H 4750 7500 50 0001 C CNN F 3 "" H 4750 7500 50 0001 C CNN 1 4750 7500 1 0 0 -1 $EndComp $Comp L power:GND #PWR0102 U 1 1 5F670414 P 5650 7500 F 0 "#PWR0102" H 5650 7250 50 0001 C CNN F 1 "GND" H 5655 7327 50 0000 C CNN F 2 "" H 5650 7500 50 0001 C CNN F 3 "" H 5650 7500 50 0001 C CNN 1 5650 7500 1 0 0 -1 $EndComp Wire Wire Line 5450 7700 5450 7600 Wire Wire Line 5450 7500 5650 7500 Connection ~ 5450 7500 Connection ~ 5450 7600 Wire Wire Line 5450 7600 5450 7500 Wire Wire Line 4950 7700 4950 7600 Wire Wire Line 4950 7500 4750 7500 Connection ~ 4950 7500 Connection ~ 4950 7600 Wire Wire Line 4950 7600 4950 7500 $Comp L power:VCC #PWR0103 U 1 1 5F6704A8 P 4575 7400 F 0 "#PWR0103" H 4575 7250 50 0001 C CNN F 1 "VCC" H 4592 7573 50 0000 C CNN F 2 "" H 4575 7400 50 0001 C CNN F 3 "" H 4575 7400 50 0001 C CNN 1 4575 7400 1 0 0 -1 $EndComp $Comp L power:VCC #PWR0104 U 1 1 5F6704D9 P 5825 7400 F 0 "#PWR0104" H 5825 7250 50 0001 C CNN F 1 "VCC" H 5842 7573 50 0000 C CNN F 2 "" H 5825 7400 50 0001 C CNN F 3 "" H 5825 7400 50 0001 C CNN 1 5825 7400 1 0 0 -1 $EndComp Wire Wire Line 5825 7400 5450 7400 Wire Wire Line 4950 7400 4575 7400 $Comp L power:+5V #PWR0107 U 1 1 5F670930 P 5700 7300 F 0 "#PWR0107" H 5700 7150 50 0001 C CNN F 1 "+5V" H 5715 7473 50 0000 C CNN F 2 "" H 5700 7300 50 0001 C CNN F 3 "" H 5700 7300 50 0001 C CNN 1 5700 7300 1 0 0 -1 $EndComp $Comp L power:+5V #PWR0108 U 1 1 5F670961 P 4700 7300 F 0 "#PWR0108" H 4700 7150 50 0001 C CNN F 1 "+5V" H 4715 7473 50 0000 C CNN F 2 "" H 4700 7300 50 0001 C CNN F 3 "" H 4700 7300 50 0001 C CNN 1 4700 7300 1 0 0 -1 $EndComp Wire Wire Line 4700 7300 4950 7300 Wire Wire Line 5450 7300 5700 7300 Text Label 5450 7200 0 50 ~ 0 CV Text Label 5450 7100 0 50 ~ 0 GATE Text Label 4950 7200 2 50 ~ 0 CV Text Label 4950 7100 2 50 ~ 0 GATE $Comp L power:VEE #PWR0106 U 1 1 6020BBB5 P 4950 7800 F 0 "#PWR0106" H 4950 7650 50 0001 C CNN F 1 "VEE" H 4965 7973 50 0000 C CNN F 2 "" H 4950 7800 50 0001 C CNN F 3 "" H 4950 7800 50 0001 C CNN 1 4950 7800 -1 0 0 1 $EndComp $Comp L power:VEE #PWR0110 U 1 1 6020BEF7 P 5450 7800 F 0 "#PWR0110" H 5450 7650 50 0001 C CNN F 1 "VEE" H 5465 7973 50 0000 C CNN F 2 "" H 5450 7800 50 0001 C CNN F 3 "" H 5450 7800 50 0001 C CNN 1 5450 7800 -1 0 0 1 $EndComp $Comp L Amplifier_Operational:LM13700 U2 U 3 1 5D50D9CD P 4725 2525 F 0 "U2" H 4725 2825 50 0000 C CNN F 1 "LM13700" H 4725 2750 50 0000 C CNN F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 4425 2550 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 4425 2550 50 0001 C CNN 3 4725 2525 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U3 U 5 1 5D50DFA5 P 6475 6325 F 0 "U3" H 6433 6371 50 0000 L CNN F 1 "TL074" H 6433 6280 50 0000 L CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 6425 6425 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 6525 6525 50 0001 C CNN 5 6475 6325 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:LM13700 U2 U 5 1 5D50E0B5 P 7250 6325 F 0 "U2" H 7208 6371 50 0000 L CNN F 1 "LM13700" H 7208 6280 50 0000 L CNN F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 6950 6350 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 6950 6350 50 0001 C CNN 5 7250 6325 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U4 U 1 1 5D50E5BA P 9550 4400 F 0 "U4" H 9675 4275 50 0000 C CNN F 1 "TL074" H 9650 4200 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 9500 4500 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 9600 4600 50 0001 C CNN 1 9550 4400 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U4 U 2 1 5D50E69B P 9550 5100 F 0 "U4" H 9675 4975 50 0000 C CNN F 1 "TL074" H 9650 4900 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 9500 5200 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 9600 5300 50 0001 C CNN 2 9550 5100 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U4 U 3 1 5D50E7A7 P 7725 3525 F 0 "U4" H 7825 3275 50 0000 C CNN F 1 "TL074" H 7825 3375 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 7675 3625 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 7775 3725 50 0001 C CNN 3 7725 3525 1 0 0 1 $EndComp $Comp L Amplifier_Operational:TL074 U4 U 4 1 5D50E9FF P 8400 3275 F 0 "U4" H 8500 3525 50 0000 C CNN F 1 "TL074" H 8500 3425 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 8350 3375 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 8450 3475 50 0001 C CNN 4 8400 3275 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U4 U 5 1 5D50F36B P 5625 6325 F 0 "U4" H 5583 6371 50 0000 L CNN F 1 "TL074" H 5583 6280 50 0000 L CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 5575 6425 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 5675 6525 50 0001 C CNN 5 5625 6325 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:LM13700 U2 U 1 1 5D50FE3A P 8000 1400 F 0 "U2" H 8000 1700 50 0000 C CNN F 1 "LM13700" H 8100 1600 50 0000 C CNN F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 7700 1425 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 7700 1425 50 0001 C CNN 1 8000 1400 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:LM13700 U2 U 2 1 5D50FF37 P 8900 1400 F 0 "U2" H 8800 1748 50 0000 C CNN F 1 "LM13700" H 8800 1657 50 0000 C CNN F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 8600 1425 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 8600 1425 50 0001 C CNN 2 8900 1400 1 0 0 -1 $EndComp $Comp L Device:C C4 U 1 1 5D510191 P 5175 2725 F 0 "C4" H 5290 2771 50 0000 L CNN F 1 "2200pF" H 5290 2680 50 0000 L CNN F 2 "Capacitor_THT:C_Rect_L10.0mm_W4.0mm_P7.50mm_MKS4" H 5213 2575 50 0001 C CNN F 3 "~" H 5175 2725 50 0001 C CNN 1 5175 2725 1 0 0 -1 $EndComp $Comp L Device:R R3 U 1 1 5D52BD71 P 7550 1450 F 0 "R3" H 7300 1500 50 0000 L CNN F 1 "390" H 7300 1400 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 7480 1450 50 0001 C CNN F 3 "~" H 7550 1450 50 0001 C CNN 1 7550 1450 1 0 0 -1 $EndComp $Comp L Device:R R4 U 1 1 5D52BFF2 P 10125 4400 F 0 "R4" V 9918 4400 50 0000 C CNN F 1 "1k" V 10009 4400 50 0000 C CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 10055 4400 50 0001 C CNN F 3 "~" H 10125 4400 50 0001 C CNN 1 10125 4400 0 1 1 0 $EndComp $Comp L Device:R R6 U 1 1 5D52E5BE P 4275 2125 F 0 "R6" V 4068 2125 50 0000 C CNN F 1 "1.5k" V 4159 2125 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 4205 2125 50 0001 C CNN F 3 "~" H 4275 2125 50 0001 C CNN 1 4275 2125 0 1 1 0 $EndComp $Comp L Device:R R7 U 1 1 5D52E854 P 3950 2800 F 0 "R7" H 4020 2846 50 0000 L CNN F 1 "1.5k" H 4020 2755 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 3880 2800 50 0001 C CNN F 3 "~" H 3950 2800 50 0001 C CNN 1 3950 2800 1 0 0 -1 $EndComp $Comp L Device:R R8 U 1 1 5D52EBC5 P 8875 3450 F 0 "R8" H 8945 3496 50 0000 L CNN F 1 "1.8k" H 8945 3405 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 8805 3450 50 0001 C CNN F 3 "~" H 8875 3450 50 0001 C CNN 1 8875 3450 1 0 0 -1 $EndComp $Comp L Device:R R10 U 1 1 5D52F1C8 P 9900 1775 F 0 "R10" H 9970 1821 50 0000 L CNN F 1 "2k" H 9970 1730 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9830 1775 50 0001 C CNN F 3 "~" H 9900 1775 50 0001 C CNN 1 9900 1775 1 0 0 -1 $EndComp Wire Wire Line 9900 1600 10025 1600 $Comp L power:GND #PWR0129 U 1 1 5D52FA11 P 9900 1925 F 0 "#PWR0129" H 9900 1675 50 0001 C CNN F 1 "GND" H 9905 1752 50 0000 C CNN F 2 "" H 9900 1925 50 0001 C CNN F 3 "" H 9900 1925 50 0001 C CNN 1 9900 1925 1 0 0 -1 $EndComp $Comp L power:GND #PWR0111 U 1 1 5D5307D1 P 8875 3600 F 0 "#PWR0111" H 8875 3350 50 0001 C CNN F 1 "GND" H 8880 3427 50 0000 C CNN F 2 "" H 8875 3600 50 0001 C CNN F 3 "" H 8875 3600 50 0001 C CNN 1 8875 3600 1 0 0 -1 $EndComp $Comp L power:GND #PWR0114 U 1 1 5D530AB3 P 9200 5000 F 0 "#PWR0114" H 9200 4750 50 0001 C CNN F 1 "GND" H 9200 4875 50 0000 C CNN F 2 "" H 9200 5000 50 0001 C CNN F 3 "" H 9200 5000 50 0001 C CNN 1 9200 5000 1 0 0 -1 $EndComp $Comp L power:GND #PWR0115 U 1 1 5D530BA9 P 5175 2875 F 0 "#PWR0115" H 5175 2625 50 0001 C CNN F 1 "GND" H 5180 2702 50 0000 C CNN F 2 "" H 5175 2875 50 0001 C CNN F 3 "" H 5175 2875 50 0001 C CNN 1 5175 2875 1 0 0 -1 $EndComp $Comp L power:GND #PWR0116 U 1 1 5D530C6A P 3950 2950 F 0 "#PWR0116" H 3950 2700 50 0001 C CNN F 1 "GND" H 3955 2777 50 0000 C CNN F 2 "" H 3950 2950 50 0001 C CNN F 3 "" H 3950 2950 50 0001 C CNN 1 3950 2950 1 0 0 -1 $EndComp $Comp L power:GND #PWR0121 U 1 1 5D53175B P 3025 1950 F 0 "#PWR0121" H 3025 1700 50 0001 C CNN F 1 "GND" H 3025 1800 50 0000 C CNN F 2 "" H 3025 1950 50 0001 C CNN F 3 "" H 3025 1950 50 0001 C CNN 1 3025 1950 1 0 0 -1 $EndComp $Comp L power:GND #PWR0124 U 1 1 5D531BB0 P 7550 1600 F 0 "#PWR0124" H 7550 1350 50 0001 C CNN F 1 "GND" H 7555 1427 50 0000 C CNN F 2 "" H 7550 1600 50 0001 C CNN F 3 "" H 7550 1600 50 0001 C CNN 1 7550 1600 1 0 0 -1 $EndComp $Comp L power:GND #PWR0125 U 1 1 5D531C71 P 7700 1500 F 0 "#PWR0125" H 7700 1250 50 0001 C CNN F 1 "GND" H 7705 1327 50 0000 C CNN F 2 "" H 7700 1500 50 0001 C CNN F 3 "" H 7700 1500 50 0001 C CNN 1 7700 1500 1 0 0 -1 $EndComp $Comp L power:GND #PWR0126 U 1 1 5D531D67 P 4175 6325 F 0 "#PWR0126" H 4175 6075 50 0001 C CNN F 1 "GND" H 4180 6152 50 0000 C CNN F 2 "" H 4175 6325 50 0001 C CNN F 3 "" H 4175 6325 50 0001 C CNN 1 4175 6325 1 0 0 -1 $EndComp Wire Wire Line 4175 6325 4625 6325 Connection ~ 4625 6325 Wire Wire Line 4625 6325 5075 6325 Connection ~ 5075 6325 Wire Wire Line 5075 6325 5925 6325 Connection ~ 5925 6325 Wire Wire Line 5925 6325 6775 6325 $Comp L power:GND #PWR0127 U 1 1 5D532394 P 4125 2125 F 0 "#PWR0127" H 4125 1875 50 0001 C CNN F 1 "GND" H 4125 2000 50 0000 C CNN F 2 "" H 4125 2125 50 0001 C CNN F 3 "" H 4125 2125 50 0001 C CNN 1 4125 2125 1 0 0 -1 $EndComp $Comp L Device:R R12 U 1 1 5D533629 P 7800 2925 F 0 "R12" V 7625 2925 50 0000 C CNN F 1 "2.2k" V 7700 2925 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7730 2925 50 0001 C CNN F 3 "~" H 7800 2925 50 0001 C CNN 1 7800 2925 0 1 1 0 $EndComp $Comp L Device:R R15 U 1 1 5D535416 P 3025 1350 F 0 "R15" H 3095 1396 50 0000 L CNN F 1 "4.7k" H 3095 1305 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 2955 1350 50 0001 C CNN F 3 "~" H 3025 1350 50 0001 C CNN 1 3025 1350 1 0 0 -1 $EndComp $Comp L Device:R R16 U 1 1 5D5357BE P 4575 2125 F 0 "R16" V 4368 2125 50 0000 C CNN F 1 "10k" V 4459 2125 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 4505 2125 50 0001 C CNN F 3 "~" H 4575 2125 50 0001 C CNN 1 4575 2125 0 1 1 0 $EndComp $Comp L Device:R R19 U 1 1 5D536E48 P 9950 4925 F 0 "R19" H 10020 4971 50 0000 L CNN F 1 "10k" H 10020 4880 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9880 4925 50 0001 C CNN F 3 "~" H 9950 4925 50 0001 C CNN 1 9950 4925 1 0 0 -1 $EndComp $Comp L Device:R R25 U 1 1 5D548A76 P 8600 1650 F 0 "R25" H 8670 1696 50 0000 L CNN F 1 "300k" H 8670 1605 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 8530 1650 50 0001 C CNN F 3 "~" H 8600 1650 50 0001 C CNN 1 8600 1650 1 0 0 -1 $EndComp $Comp L Device:R R55 U 1 1 5D548D00 P 9025 1675 F 0 "R55" H 9095 1721 50 0000 L CNN F 1 "5.6k" H 9095 1630 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 8955 1675 50 0001 C CNN F 3 "~" H 9025 1675 50 0001 C CNN 1 9025 1675 1 0 0 -1 $EndComp $Comp L Device:R R27 U 1 1 5D54BF95 P 8300 1650 F 0 "R27" H 8370 1696 50 0000 L CNN F 1 "33k" H 8370 1605 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 8230 1650 50 0001 C CNN F 3 "~" H 8300 1650 50 0001 C CNN 1 8300 1650 1 0 0 -1 $EndComp $Comp L Device:R R26 U 1 1 5D54FD93 P 8375 975 F 0 "R26" V 8200 975 50 0000 C CNN F 1 "39k" V 8275 975 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 8305 975 50 0001 C CNN F 3 "~" H 8375 975 50 0001 C CNN 1 8375 975 0 1 -1 0 $EndComp $Comp L Device:R R29 U 1 1 5D551595 P 1100 1575 F 0 "R29" V 893 1575 50 0000 C CNN F 1 "100k" V 984 1575 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 1030 1575 50 0001 C CNN F 3 "~" H 1100 1575 50 0001 C CNN 1 1100 1575 0 1 1 0 $EndComp $Comp L Device:R R30 U 1 1 5D55197B P 1100 2175 F 0 "R30" V 893 2175 50 0000 C CNN F 1 "100k" V 984 2175 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 1030 2175 50 0001 C CNN F 3 "~" H 1100 2175 50 0001 C CNN 1 1100 2175 0 1 1 0 $EndComp $Comp L Device:R R32 U 1 1 5D5594D2 P 9075 5275 F 0 "R32" H 9145 5321 50 0000 L CNN F 1 "100k" H 9145 5230 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9005 5275 50 0001 C CNN F 3 "~" H 9075 5275 50 0001 C CNN 1 9075 5275 -1 0 0 -1 $EndComp $Comp L Device:R R34 U 1 1 5D56C682 P 7550 1150 F 0 "R34" H 7300 1200 50 0000 L CNN F 1 "100k" H 7300 1100 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7480 1150 50 0001 C CNN F 3 "~" H 7550 1150 50 0001 C CNN 1 7550 1150 1 0 0 -1 $EndComp Wire Wire Line 7700 1300 7550 1300 Connection ~ 7550 1300 Wire Wire Line 8300 1400 8550 1400 Wire Wire Line 8600 1500 8600 1400 Connection ~ 8600 1400 $Comp L Device:R R35 U 1 1 5D581B21 P 7100 3225 F 0 "R35" V 6893 3225 50 0000 C CNN F 1 "100k" V 6984 3225 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7030 3225 50 0001 C CNN F 3 "~" H 7100 3225 50 0001 C CNN 1 7100 3225 0 1 1 0 $EndComp $Comp L Device:R_POT_TRIM R38 U 1 1 5D58F31A P 6800 1400 F 0 "R38" H 6730 1446 50 0000 R CNN F 1 "100k" H 6730 1355 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3299X_Horizontal" H 6800 1400 50 0001 C CNN F 3 "~" H 6800 1400 50 0001 C CNN 1 6800 1400 1 0 0 -1 $EndComp $Comp L Device:R R45 U 1 1 5D5A6855 P 7625 3225 F 0 "R45" V 7418 3225 50 0000 C CNN F 1 "120k" V 7509 3225 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7555 3225 50 0001 C CNN F 3 "~" H 7625 3225 50 0001 C CNN 1 7625 3225 0 1 1 0 $EndComp Wire Wire Line 7475 3225 7400 3225 $Comp L Device:R R47 U 1 1 5D5B3CF3 P 7100 3550 F 0 "R47" V 6893 3550 50 0000 C CNN F 1 "330k" V 6984 3550 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7030 3550 50 0001 C CNN F 3 "~" H 7100 3550 50 0001 C CNN 1 7100 3550 0 1 1 0 $EndComp $Comp L Device:R R49 U 1 1 5D5BDAEC P 9950 5625 F 0 "R49" H 10020 5671 50 0000 L CNN F 1 "1M" H 10020 5580 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9880 5625 50 0001 C CNN F 3 "~" H 9950 5625 50 0001 C CNN 1 9950 5625 1 0 0 -1 $EndComp $Comp L Device:R R50 U 1 1 5D5C14C7 P 7100 1400 F 0 "R50" V 6893 1400 50 0000 C CNN F 1 "1M" V 6984 1400 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7030 1400 50 0001 C CNN F 3 "~" H 7100 1400 50 0001 C CNN 1 7100 1400 0 1 1 0 $EndComp Wire Wire Line 7250 1400 7275 1400 $Comp L Device:R R53 U 1 1 5D61C1C2 P 8400 2925 F 0 "R53" V 8225 2925 50 0000 C CNN F 1 "2.2M" V 8300 2925 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 8330 2925 50 0001 C CNN F 3 "~" H 8400 2925 50 0001 C CNN 1 8400 2925 0 1 1 0 $EndComp Wire Wire Line 8700 2925 8700 3275 Wire Wire Line 8100 2925 8100 3175 $Comp L Device:R R54 U 1 1 5D63D5CA P 1100 1875 F 0 "R54" V 893 1875 50 0000 C CNN F 1 "2.2M" V 984 1875 50 0000 C CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 1030 1875 50 0001 C CNN F 3 "~" H 1100 1875 50 0001 C CNN 1 1100 1875 0 1 1 0 $EndComp Wire Wire Line 8550 2925 8700 2925 Wire Wire Line 8250 2925 8100 2925 Wire Wire Line 7950 2925 8100 2925 Connection ~ 8100 2925 Connection ~ 6375 6025 Connection ~ 5525 6025 Wire Wire Line 4625 6025 4175 6025 Connection ~ 4625 6025 Connection ~ 5525 6625 Connection ~ 6375 6625 NoConn ~ 7700 1400 NoConn ~ 4425 2525 $Comp L Amplifier_Operational:LM13700 U2 U 4 1 5D772006 P 4125 7800 F 0 "U2" H 4025 8148 50 0000 C CNN F 1 "LM13700" H 4025 8057 50 0000 C CNN F 2 "Package_SO:SOIC-16_3.9x9.9mm_P1.27mm" H 3825 7825 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/lm13700.pdf" H 3825 7825 50 0001 C CNN 4 4125 7800 1 0 0 -1 $EndComp NoConn ~ 4225 7900 $Comp L power:-15V #PWR0134 U 1 1 5D77F224 P 4425 6500 F 0 "#PWR0134" H 4425 6600 50 0001 C CNN F 1 "-15V" H 4440 6673 50 0000 C CNN F 2 "" H 4425 6500 50 0001 C CNN F 3 "" H 4425 6500 50 0001 C CNN 1 4425 6500 1 0 0 1 $EndComp $Comp L power:-15V #PWR0136 U 1 1 5D77F430 P 9025 1825 F 0 "#PWR0136" H 9025 1925 50 0001 C CNN F 1 "-15V" H 9040 1998 50 0000 C CNN F 2 "" H 9025 1825 50 0001 C CNN F 3 "" H 9025 1825 50 0001 C CNN 1 9025 1825 1 0 0 1 $EndComp $Comp L power:-15V #PWR0137 U 1 1 5D77F87C P 6800 1550 F 0 "#PWR0137" H 6800 1650 50 0001 C CNN F 1 "-15V" H 6815 1723 50 0000 C CNN F 2 "" H 6800 1550 50 0001 C CNN F 3 "" H 6800 1550 50 0001 C CNN 1 6800 1550 1 0 0 1 $EndComp $Comp L power:+15V #PWR0139 U 1 1 5D78023D P 8600 1800 F 0 "#PWR0139" H 8600 1650 50 0001 C CNN F 1 "+15V" H 8500 1950 50 0000 C CNN F 2 "" H 8600 1800 50 0001 C CNN F 3 "" H 8600 1800 50 0001 C CNN 1 8600 1800 -1 0 0 1 $EndComp $Comp L power:+15V #PWR0140 U 1 1 5D7803D4 P 8100 1925 F 0 "#PWR0140" H 8100 1775 50 0001 C CNN F 1 "+15V" H 8115 2098 50 0000 C CNN F 2 "" H 8100 1925 50 0001 C CNN F 3 "" H 8100 1925 50 0001 C CNN 1 8100 1925 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0141 U 1 1 5D7805D8 P 6800 1250 F 0 "#PWR0141" H 6800 1100 50 0001 C CNN F 1 "+15V" H 6815 1423 50 0000 C CNN F 2 "" H 6800 1250 50 0001 C CNN F 3 "" H 6800 1250 50 0001 C CNN 1 6800 1250 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0145 U 1 1 5D780FAF P 3025 1200 F 0 "#PWR0145" H 3025 1050 50 0001 C CNN F 1 "+15V" H 3025 1350 50 0000 C CNN F 2 "" H 3025 1200 50 0001 C CNN F 3 "" H 3025 1200 50 0001 C CNN 1 3025 1200 1 0 0 -1 $EndComp $Comp L Transistor_BJT:MMBT3904 Q1 U 1 1 5D588F4D P 2925 1750 F 0 "Q1" H 3116 1796 50 0000 L CNN F 1 "MMBT3904" H 3116 1705 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-23" H 3125 1675 50 0001 L CIN F 3 "https://www.fairchildsemi.com/datasheets/2N/2N3904.pdf" H 2925 1750 50 0001 L CNN 1 2925 1750 1 0 0 -1 $EndComp NoConn ~ 8300 2100 Text Label 950 2175 2 50 ~ 0 1VOctave Text Label 950 1575 2 50 ~ 0 FreqCoarse Text Label 950 1875 2 50 ~ 0 FreqFine Text Label 6950 3225 2 50 ~ 0 PWM Text Label 10275 4400 0 50 ~ 0 Ramp Text Label 10025 1600 0 50 ~ 0 Triangle Text Label 9050 1150 0 50 ~ 0 Sine Text Label 9000 3275 0 50 ~ 0 Pulse Text Label 950 1275 2 50 ~ 0 ExpFM Text Label 6950 3550 2 50 ~ 0 InitPW Text Label 4125 3950 0 50 ~ 0 LinFM2LinAtten Text Label 4125 3850 0 50 ~ 0 AttenLinFM Text Label 5675 4375 2 50 ~ 0 LinFM Text Label 5675 4675 2 50 ~ 0 HardSync_In Text Label 5675 4475 2 50 ~ 0 1VOctave Text Label 5675 4575 2 50 ~ 0 ExpFM Text Label 5050 4100 2 50 ~ 0 InitPW Text Label 5675 4275 2 50 ~ 0 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power:-15V #PWR0149 U 1 1 5E28C6F9 P 5050 4200 F 0 "#PWR0149" H 5050 4300 50 0001 C CNN F 1 "-15V" H 5065 4373 50 0000 C CNN F 2 "" H 5050 4200 50 0001 C CNN F 3 "" H 5050 4200 50 0001 C CNN 1 5050 4200 1 0 0 1 $EndComp $Comp L power:+15V #PWR0150 U 1 1 5E28C882 P 6000 3550 F 0 "#PWR0150" H 6000 3400 50 0001 C CNN F 1 "+15V" H 6015 3723 50 0000 C CNN F 2 "" H 6000 3550 50 0001 C CNN F 3 "" H 6000 3550 50 0001 C CNN 1 6000 3550 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0151 U 1 1 5E2A24B8 P 5500 3550 F 0 "#PWR0151" H 5500 3400 50 0001 C CNN F 1 "+15V" H 5515 3723 50 0000 C CNN F 2 "" H 5500 3550 50 0001 C CNN F 3 "" H 5500 3550 50 0001 C CNN 1 5500 3550 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0152 U 1 1 5E2A257B P 5050 4000 F 0 "#PWR0152" H 5050 3850 50 0001 C CNN F 1 "+15V" H 5065 4173 50 0000 C CNN F 2 "" H 5050 4000 50 0001 C CNN F 3 "" H 5050 4000 50 0001 C CNN 1 5050 4000 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_01x03 J5 U 1 1 5E2A5023 P 3925 3850 F 0 "J5" H 3845 4167 50 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H 6745 4571 50 0000 L CNN F 1 "10k" H 6745 4480 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 6605 4525 50 0001 C CNN F 3 "~" H 6675 4525 50 0001 C CNN 1 6675 4525 1 0 0 -1 $EndComp $Comp L Device:R R21 U 1 1 60685C8F P 6675 4875 F 0 "R21" H 6745 4921 50 0000 L CNN F 1 "20k" H 6745 4830 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 6605 4875 50 0001 C CNN F 3 "~" H 6675 4875 50 0001 C CNN 1 6675 4875 1 0 0 -1 $EndComp $Comp L power:GND #PWR0130 U 1 1 60685DFF P 6675 5025 F 0 "#PWR0130" H 6675 4775 50 0001 C CNN F 1 "GND" H 6680 4852 50 0000 C CNN F 2 "" H 6675 5025 50 0001 C CNN F 3 "" H 6675 5025 50 0001 C CNN 1 6675 5025 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0131 U 1 1 60685F4D P 6675 4375 F 0 "#PWR0131" H 6675 4225 50 0001 C CNN F 1 "+15V" H 6690 4548 50 0000 C CNN F 2 "" H 6675 4375 50 0001 C CNN F 3 "" H 6675 4375 50 0001 C CNN 1 6675 4375 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0132 U 1 1 60785F92 P 4725 2125 F 0 "#PWR0132" H 4725 1975 50 0001 C CNN F 1 "+15V" H 4740 2298 50 0000 C CNN F 2 "" H 4725 2125 50 0001 C CNN F 3 "" H 4725 2125 50 0001 C CNN 1 4725 2125 1 0 0 -1 $EndComp Wire Wire Line 5025 2800 5025 2625 $Comp L Device:R R18 U 1 1 60856ACD P 9950 4575 F 0 "R18" H 10020 4621 50 0000 L CNN F 1 "10k" H 10020 4530 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9880 4575 50 0001 C CNN F 3 "~" H 9950 4575 50 0001 C CNN 1 9950 4575 1 0 0 -1 $EndComp Wire Wire Line 9850 4400 9950 4400 Wire Wire Line 9950 4425 9950 4400 Connection ~ 9950 4400 Wire Wire Line 9950 4400 9975 4400 $Comp L Device:R R46 U 1 1 6094AF5A P 9075 5625 F 0 "R46" H 9145 5671 50 0000 L CNN F 1 "150k" H 9145 5580 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9005 5625 50 0001 C CNN F 3 "~" H 9075 5625 50 0001 C CNN 1 9075 5625 -1 0 0 -1 $EndComp $Comp L power:-15V #PWR0135 U 1 1 6094B2F7 P 9075 5775 F 0 "#PWR0135" H 9075 5875 50 0001 C CNN F 1 "-15V" H 9090 5948 50 0000 C CNN F 2 "" H 9075 5775 50 0001 C CNN F 3 "" H 9075 5775 50 0001 C CNN 1 9075 5775 -1 0 0 1 $EndComp Wire Wire Line 9250 5000 9200 5000 Wire Wire Line 9250 5200 9225 5200 Wire Wire Line 9950 5075 9950 5100 $Comp L Device:R R33 U 1 1 60ABBB84 P 9950 5275 F 0 "R33" H 10020 5321 50 0000 L CNN F 1 "100k" H 10020 5230 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 9880 5275 50 0001 C CNN F 3 "~" H 9950 5275 50 0001 C CNN 1 9950 5275 1 0 0 -1 $EndComp Wire Wire Line 9950 5125 9950 5100 Connection ~ 9950 5100 Wire Wire Line 9225 5200 9225 5450 Wire Wire Line 9950 5475 9950 5450 Wire Wire Line 9225 5450 9950 5450 Connection ~ 9950 5450 Wire Wire Line 9950 5450 9950 5425 Wire Wire Line 9250 4500 9225 4500 $Comp L Device:R_POT_TRIM R37 U 1 1 60BB90B5 P 9625 5850 F 0 "R37" H 9555 5896 50 0000 R CNN F 1 "100k" H 9555 5805 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3299X_Horizontal" H 9625 5850 50 0001 C CNN F 3 "~" H 9625 5850 50 0001 C CNN 1 9625 5850 1 0 0 -1 $EndComp $Comp L power:+15V #PWR0138 U 1 1 60BB92EC P 9625 5700 F 0 "#PWR0138" H 9625 5550 50 0001 C CNN F 1 "+15V" H 9640 5873 50 0000 C CNN F 2 "" H 9625 5700 50 0001 C CNN F 3 "" H 9625 5700 50 0001 C CNN 1 9625 5700 1 0 0 -1 $EndComp $Comp L power:-15V #PWR0142 U 1 1 60BB954B P 9625 6000 F 0 "#PWR0142" H 9625 6100 50 0001 C CNN F 1 "-15V" H 9640 6173 50 0000 C CNN F 2 "" H 9625 6000 50 0001 C CNN F 3 "" H 9625 6000 50 0001 C CNN 1 9625 6000 -1 0 0 1 $EndComp Wire Wire Line 9775 5850 9950 5850 Wire Wire Line 9950 5850 9950 5775 Text Notes 6550 750 0 198 ~ 0 OUTPUT SHAPING Text Notes 3775 5125 0 198 ~ 0 POWER Text Notes 3775 6925 0 100 ~ 0 POWER INPUT Text Notes 3800 5375 0 100 ~ 0 FLAGS Text Notes 525 1000 0 100 ~ 0 CV INPUT Text Notes 3750 750 0 198 ~ 0 OSCILLATOR CORE Wire Wire Line 8875 3275 9000 3275 Connection ~ 3025 1525 Wire Wire Line 3025 1525 3025 1550 Text Notes 1600 1000 0 100 ~ 0 HARD SYNC BUFFER Text Notes 6550 1000 0 77 ~ 0 SINE OUT Text Notes 9300 1000 0 77 ~ 0 TRIANGLE OUT Text Notes 3775 7175 0 50 ~ 0 Doepfer 16-pin,\n2.54mm-pitch,\n±15V+5V. 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6025 50 0001 C CNN F 3 "~" H 5075 6175 50 0001 C CNN 1 5075 6175 1 0 0 -1 $EndComp $Comp L Device:C C10 U 1 1 5FB16247 P 5075 6475 F 0 "C10" H 5190 6521 50 0000 L CNN F 1 "10nF" H 5190 6430 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 5113 6325 50 0001 C CNN F 3 "~" H 5075 6475 50 0001 C CNN 1 5075 6475 1 0 0 -1 $EndComp $Comp L Device:C C7 U 1 1 5FB3C8BB P 5925 6175 F 0 "C7" H 6040 6221 50 0000 L CNN F 1 "10nF" H 6040 6130 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 5963 6025 50 0001 C CNN F 3 "~" H 5925 6175 50 0001 C CNN 1 5925 6175 1 0 0 -1 $EndComp $Comp L Device:C C8 U 1 1 5FB3C8C1 P 5925 6475 F 0 "C8" H 6040 6521 50 0000 L CNN F 1 "10nF" H 6040 6430 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 5963 6325 50 0001 C CNN F 3 "~" H 5925 6475 50 0001 C CNN 1 5925 6475 1 0 0 -1 $EndComp $Comp L Device:C C5 U 1 1 5FB45EA3 P 6775 6175 F 0 "C5" H 6890 6221 50 0000 L CNN F 1 "10nF" H 6890 6130 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 6813 6025 50 0001 C CNN F 3 "~" H 6775 6175 50 0001 C CNN 1 6775 6175 1 0 0 -1 $EndComp $Comp L Device:C C13 U 1 1 5FB4F34F P 4625 6175 F 0 "C13" H 4740 6221 50 0000 L CNN F 1 "10uF" H 4740 6130 50 0000 L CNN F 2 "Capacitor_SMD:C_1206_3216Metric" H 4663 6025 50 0001 C CNN F 3 "~" H 4625 6175 50 0001 C CNN 1 4625 6175 1 0 0 -1 $EndComp $Comp L Device:C C14 U 1 1 5FB4F355 P 4625 6475 F 0 "C14" H 4740 6521 50 0000 L CNN F 1 "10uF" H 4740 6430 50 0000 L CNN F 2 "Capacitor_SMD:C_1206_3216Metric" H 4663 6325 50 0001 C CNN F 3 "~" H 4625 6475 50 0001 C CNN 1 4625 6475 1 0 0 -1 $EndComp $Comp L Device:C C6 U 1 1 5FB45EA9 P 6775 6475 F 0 "C6" H 6890 6521 50 0000 L CNN F 1 "10nF" H 6890 6430 50 0000 L CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 6813 6325 50 0001 C CNN F 3 "~" H 6775 6475 50 0001 C CNN 1 6775 6475 1 0 0 -1 $EndComp Wire Wire Line 6375 6025 6775 6025 Connection ~ 6775 6025 Wire Wire Line 6775 6025 7150 6025 Wire Wire Line 6375 6625 6775 6625 Connection ~ 6775 6325 Connection ~ 6775 6625 Wire Wire Line 6775 6625 7150 6625 Wire Wire Line 5525 6025 5925 6025 Connection ~ 5925 6025 Wire Wire Line 5925 6025 6375 6025 Wire Wire Line 5525 6625 5925 6625 Connection ~ 5925 6625 Wire Wire Line 5925 6625 6375 6625 Wire Wire Line 4625 6625 5075 6625 Connection ~ 5075 6625 Wire Wire Line 5075 6625 5525 6625 Wire Wire Line 4625 6025 5075 6025 Connection ~ 5075 6025 Wire Wire Line 5075 6025 5525 6025 Wire Wire Line 9075 5075 9000 5075 $Comp L Device:R R28 U 1 1 60257257 P 1100 1275 F 0 "R28" V 893 1275 50 0000 C CNN F 1 "100k" V 984 1275 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 1030 1275 50 0001 C CNN F 3 "~" H 1100 1275 50 0001 C CNN 1 1100 1275 0 1 1 0 $EndComp Connection ~ 1250 2175 Text Notes 6575 4125 0 77 ~ 0 INTERNAL TRIANGLE $Comp L Diode:1N4148WS D2 U 1 1 6132F669 P 2700 1925 F 0 "D2" V 2654 2005 50 0000 L CNN F 1 "1N4148WS" V 2745 2005 50 0000 L CNN F 2 "Diode_SMD:D_SOD-323" H 2700 1750 50 0001 C CNN F 3 "https://www.vishay.com/docs/85751/1n4148ws.pdf" H 2700 1925 50 0001 C CNN 1 2700 1925 0 -1 1 0 $EndComp Text Label 2075 1750 2 50 ~ 0 HardSync_In $Comp L Device:R R31 U 1 1 5D552EA5 P 2525 1750 F 0 "R31" V 2318 1750 50 0000 C CNN F 1 "100k" V 2409 1750 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 2455 1750 50 0001 C CNN F 3 "~" H 2525 1750 50 0001 C CNN 1 2525 1750 0 1 1 0 $EndComp $Comp L power:GND #PWR0122 U 1 1 5D53181C P 2700 2075 F 0 "#PWR0122" H 2700 1825 50 0001 C CNN F 1 "GND" H 2700 1950 50 0000 C CNN F 2 "" H 2700 2075 50 0001 C CNN F 3 "" H 2700 2075 50 0001 C CNN 1 2700 2075 1 0 0 -1 $EndComp $Comp L Device:C C2 U 1 1 5D50FA9A P 2225 1750 F 0 "C2" V 1973 1750 50 0000 C CNN F 1 "470pF" V 2064 1750 50 0000 C CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 2263 1600 50 0001 C CNN F 3 "~" H 2225 1750 50 0001 C CNN 1 2225 1750 0 1 1 0 $EndComp Text Notes 3800 5975 0 100 ~ 0 BYPASS CAPACITORS Text Notes 3800 7400 0 50 ~ 0 OTA Buffer\n(not used) Text Label 4750 1475 2 50 ~ 0 Discharge $Comp L Device:C C3 U 1 1 601090DC P 5975 1475 F 0 "C3" V 5825 1575 50 0000 C CNN F 1 "1nF" V 5900 1600 50 0000 C CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 6013 1325 50 0001 C CNN F 3 "~" H 5975 1475 50 0001 C CNN 1 5975 1475 0 1 1 0 $EndComp Text Label 4750 1675 2 50 ~ 0 Hysteresis Text Label 5750 1275 0 50 ~ 0 Hysteresis $Comp L Timer:TLC555xD U1 U 1 1 5D50D4DB P 5250 1475 F 0 "U1" H 5550 1925 50 0000 C CNN F 1 "TLC555" H 5475 1850 50 0000 C CNN F 2 "Package_SO:SOIC-8_3.9x4.9mm_P1.27mm" H 5300 1225 50 0001 L CNN F 3 "http://www.ti.com/lit/ds/symlink/tlc555.pdf" H 5900 925 50 0001 C CNN 1 5250 1475 -1 0 0 -1 $EndComp Text Label 5750 1675 0 50 ~ 0 HardSync $Comp L power:+15V #PWR0146 U 1 1 5D781862 P 5250 1075 F 0 "#PWR0146" H 5250 925 50 0001 C CNN F 1 "+15V" H 5265 1248 50 0000 C CNN F 2 "" H 5250 1075 50 0001 C CNN F 3 "" H 5250 1075 50 0001 C CNN 1 5250 1075 1 0 0 -1 $EndComp $Comp L power:GND #PWR0112 U 1 1 5D530931 P 5250 1875 F 0 "#PWR0112" H 5250 1625 50 0001 C CNN F 1 "GND" H 5255 1702 50 0000 C CNN F 2 "" H 5250 1875 50 0001 C CNN F 3 "" H 5250 1875 50 0001 C CNN 1 5250 1875 1 0 0 -1 $EndComp Text Label 9000 4300 2 50 ~ 0 Discharge $Comp L Device:R R13 U 1 1 60F95776 P 8875 3100 F 0 "R13" H 8945 3146 50 0000 L CNN F 1 "3k" H 8945 3055 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 8805 3100 50 0001 C CNN F 3 "~" H 8875 3100 50 0001 C CNN 1 8875 3100 1 0 0 -1 $EndComp Wire Wire Line 8875 3300 8875 3275 Connection ~ 8875 3275 Wire Wire Line 8875 3275 8875 3250 Wire Wire Line 8875 2950 8875 2925 Wire Wire Line 8875 2925 8700 2925 Connection ~ 8700 2925 Text Notes 6550 2625 0 77 ~ 0 PULSE (SQUARE) OUT $Comp L Device:R R14 U 1 1 61255B99 P 3950 2450 F 0 "R14" H 4020 2496 50 0000 L CNN F 1 "4.7k" H 4020 2405 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 3880 2450 50 0001 C CNN F 3 "~" H 3950 2450 50 0001 C CNN 1 3950 2450 1 0 0 -1 $EndComp Wire Wire Line 3950 2650 3950 2625 Wire Wire Line 4425 2625 3950 2625 Connection ~ 3950 2625 Wire Wire Line 3950 2625 3950 2600 Wire Wire Line 4750 1275 3950 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CNN F 1 "MountingHole" H 7875 6555 50 0000 L CNN F 2 "MountingHole:MountingHole_3.2mm_M3" H 7775 6600 50 0001 C CNN F 3 "~" H 7775 6600 50 0001 C CNN 1 7775 6600 1 0 0 -1 $EndComp $Comp L Mechanical:MountingHole H2 U 1 1 60283559 P 8475 6600 F 0 "H2" H 8575 6646 50 0000 L CNN F 1 "MountingHole" H 8575 6555 50 0000 L CNN F 2 "MountingHole:MountingHole_3.2mm_M3" H 8475 6600 50 0001 C CNN F 3 "~" H 8475 6600 50 0001 C CNN 1 8475 6600 1 0 0 -1 $EndComp $Comp L Mechanical:MountingHole H3 U 1 1 60286942 P 9175 6600 F 0 "H3" H 9275 6646 50 0000 L CNN F 1 "MountingHole" H 9275 6555 50 0000 L CNN F 2 "MountingHole:MountingHole_3.2mm_M3" H 9175 6600 50 0001 C CNN F 3 "~" H 9175 6600 50 0001 C CNN 1 9175 6600 1 0 0 -1 $EndComp $Comp L Mechanical:MountingHole H4 U 1 1 60286948 P 9875 6600 F 0 "H4" H 9975 6646 50 0000 L CNN F 1 "MountingHole" H 9975 6555 50 0000 L CNN F 2 "MountingHole:MountingHole_3.2mm_M3" H 9875 6600 50 0001 C CNN F 3 "~" H 9875 6600 50 0001 C CNN 1 9875 6600 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x04_Odd_Even J3 U 1 1 601BFBF3 P 4275 4450 F 0 "J3" H 4325 4767 50 0000 C CNN F 1 "Conn_02x04_Odd_Even" H 4325 4676 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Horizontal" H 4275 4450 50 0001 C CNN F 3 "~" H 4275 4450 50 0001 C CNN 1 4275 4450 1 0 0 -1 $EndComp $Comp L Connector_Generic:Conn_02x05_Odd_Even J2 U 1 1 60216CFA P 5875 4475 F 0 "J2" H 5925 4892 50 0000 C CNN F 1 "Conn_02x05_Odd_Even" H 5925 4801 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Horizontal" H 5875 4475 50 0001 C CNN F 3 "~" H 5875 4475 50 0001 C CNN 1 5875 4475 1 0 0 -1 $EndComp $Comp L power:GND #PWR0155 U 1 1 6027D237 P 6275 4275 F 0 "#PWR0155" H 6275 4025 50 0001 C CNN F 1 "GND" H 6280 4102 50 0000 C CNN F 2 "" H 6275 4275 50 0001 C CNN F 3 "" H 6275 4275 50 0001 C CNN 1 6275 4275 1 0 0 -1 $EndComp Wire Wire Line 6275 4275 6175 4275 Wire Wire Line 6175 4275 6175 4375 Connection ~ 6175 4275 Connection ~ 6175 4375 Wire Wire Line 6175 4375 6175 4475 Connection ~ 6175 4475 Wire Wire Line 6175 4475 6175 4575 Connection ~ 6175 4575 Wire Wire Line 6175 4575 6175 4675 $Comp L power:GND #PWR0113 U 1 1 6028EBD5 P 4675 4350 F 0 "#PWR0113" H 4675 4100 50 0001 C CNN F 1 "GND" H 4680 4177 50 0000 C CNN F 2 "" H 4675 4350 50 0001 C CNN F 3 "" H 4675 4350 50 0001 C CNN 1 4675 4350 1 0 0 -1 $EndComp Wire Wire Line 4675 4350 4575 4350 Wire Wire Line 4575 4350 4575 4450 Connection ~ 4575 4350 Connection ~ 4575 4450 Wire Wire Line 4575 4450 4575 4550 Connection ~ 4575 4550 Wire Wire Line 4575 4550 4575 4650 Wire Wire Line 5075 5700 4925 5700 Wire Wire Line 4750 5700 4750 5675 Wire Wire Line 4925 5675 4925 5700 Connection ~ 4925 5700 Wire Wire Line 4925 5700 4750 5700 $Comp L Connector_Generic:Conn_02x03_Odd_Even J4 U 1 1 60434453 P 5700 3650 F 0 "J4" H 5750 3967 50 0000 C CNN F 1 "Conn_02x03_Odd_Even" H 5750 3876 50 0000 C CNN F 2 "Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Horizontal" H 5700 3650 50 0001 C CNN F 3 "~" H 5700 3650 50 0001 C CNN 1 5700 3650 1 0 0 -1 $EndComp Wire Wire Line 4325 3575 4125 3575 Wire Wire Line 4125 3575 4125 3750 Wire Wire Line 1475 2975 1500 2975 Wire Wire Line 1475 2725 1650 2725 Wire Wire Line 2550 2875 2500 2875 $Comp L power:GND #PWR0117 U 1 1 618B8131 P 2350 3325 F 0 "#PWR0117" H 2350 3075 50 0001 C CNN F 1 "GND" H 2355 3152 50 0000 C CNN F 2 "" H 2350 3325 50 0001 C CNN F 3 "" H 2350 3325 50 0001 C CNN 1 2350 3325 1 0 0 -1 $EndComp $Comp L Device:R R2 U 1 1 618B812B P 2350 3175 F 0 "R2" H 2420 3221 50 0000 L CNN F 1 "390" H 2420 3130 50 0000 L CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 2280 3175 50 0001 C CNN F 3 "~" H 2350 3175 50 0001 C CNN 1 2350 3175 1 0 0 -1 $EndComp Wire Wire Line 2100 2725 2350 2725 $Comp L Device:R_POT_TRIM R1 U 1 1 618B8124 P 2350 2875 F 0 "R1" H 2280 2921 50 0000 R CNN F 1 "100" H 2280 2830 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3299X_Horizontal" H 2350 2875 50 0001 C CNN F 3 "~" H 2350 2875 50 0001 C CNN 1 2350 2875 1 0 0 1 $EndComp Text Label 2550 2875 0 50 ~ 0 CV_Scaled Connection ~ 2100 2725 Text Label 1400 2725 2 50 ~ 0 CV_In Wire Wire Line 2050 2725 2100 2725 Wire Wire Line 2100 3075 2100 2725 Wire Wire Line 1475 2975 1475 2725 $Comp L Device:Thermistor R11 U 1 1 618B8114 P 1850 2725 F 0 "R11" V 1675 2725 50 0000 C CNN F 1 "2k" V 1750 2725 50 0000 C CNN F 2 "Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P15.24mm_Horizontal" H 1850 2725 50 0001 C CNN F 3 "~" H 1850 2725 50 0001 C CNN 1 1850 2725 0 1 1 0 $EndComp $Comp L Amplifier_Operational:TL074 U3 U 1 1 618B8108 P 1800 3075 F 0 "U3" H 1900 2825 50 0000 C CNN F 1 "TL074" H 1900 2925 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 1750 3175 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 1850 3275 50 0001 C CNN 1 1800 3075 1 0 0 1 $EndComp Wire Wire Line 1475 3200 1475 3175 Wire Wire Line 1475 3175 1500 3175 Text Notes 525 4350 0 100 ~ 0 EXPONENTIAL CONVERTER Text Notes 525 775 0 198 ~ 0 INPUT Text Notes 525 2450 0 100 ~ 0 CV AMPLIFIER/TEMP COMPENSATION Text Notes 500 7975 0 50 ~ 0 Converts the CV inputs to an exponentially proportional current which controls\nthe gain of the oscillator cores OTA. Q2 and Q3 form a long-tailed pair, with\nthe rest of this blocks circuitry belonging to its current source and HF trimmer.\n\nLinear frequency modulation is achived by varying the current to the LTP.\nThis can be seen in the equation for output current (See Xonik - Synth Theory):\n\nI_(Amp_Bias) = I_(current source) * e^( -V_(CV_Scaled) / V_(T) ),\n\nwhere Q3's output current is directly proportional to the current supplied by\nthe LTP's current source, but follows an exponential curve relative to the CV.\n\n[René Schmitz, A tutorial on exp convertors and temp compensation,\nwww.schmitzbits.de/expo_tutorial/index.html;\nNorth Coast Synthesis Ltd., Exponential converters and how they work,\nnorthcoastsynthesis.com/news/exponential-converters-and-how-they-work/;\nXonik Devices, Synth Theory, www.xonik.no/] Wire Wire Line 1400 2725 1475 2725 Connection ~ 1475 2725 Wire Notes Line 475 850 3700 850 Wire Notes Line 475 4150 3700 4150 Text Notes 500 4075 0 50 ~ 0 CV inputs are summed and fed to this inverting amplifier for scalar adjustment.\nThe scaling factor is set by R11, a 2kΩ +3500ppm/℃ thermistor (TempCo).\nThis compensates for temperature fluxuations to keep the VCO in tune.\n\n[Hal Chamberlin, _Musical Applications of Microprocessors_ 2nd ed.,\nCh.6, Pg. 187-8, "Linear Control Input"] Wire Notes Line 1550 875 1550 2275 Connection ~ 1250 1875 Wire Wire Line 1250 1875 1250 2175 Connection ~ 1250 1575 Wire Wire Line 1250 1575 1250 1875 Wire Wire Line 1250 1275 1250 1575 Wire Notes Line 475 800 3700 800 Wire Notes Line 3700 2275 475 2275 $Comp L Device:R R48 U 1 1 5FD7B011 P 1175 5225 F 0 "R48" H 1245 5271 50 0000 L CNN F 1 "1M" H 1245 5180 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 1105 5225 50 0001 C CNN F 3 "~" H 1175 5225 50 0001 C CNN 1 1175 5225 1 0 0 -1 $EndComp $Comp L Device:R R52 U 1 1 5FD7B018 P 1175 5575 F 0 "R52" H 1245 5621 50 0000 L CNN F 1 "1.5M" H 1245 5530 50 0000 L CNN F 2 "Resistor_SMD:R_0603_1608Metric" V 1105 5575 50 0001 C CNN F 3 "~" H 1175 5575 50 0001 C CNN 1 1175 5575 1 0 0 -1 $EndComp $Comp L power:GND #PWR0119 U 1 1 610B8D3B P 1600 4725 F 0 "#PWR0119" H 1600 4475 50 0001 C CNN F 1 "GND" H 1605 4552 50 0000 C CNN F 2 "" H 1600 4725 50 0001 C CNN F 3 "" H 1600 4725 50 0001 C CNN 1 1600 4725 1 0 0 -1 $EndComp Wire Wire Line 1625 4725 1600 4725 $Comp L Device:R R23 U 1 1 610C6741 P 2425 5175 F 0 "R23" H 2495 5221 50 0000 L CNN F 1 "22k" H 2495 5130 50 0000 L CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 2355 5175 50 0001 C CNN F 3 "~" H 2425 5175 50 0001 C CNN 1 2425 5175 -1 0 0 -1 $EndComp Wire Wire Line 2925 4500 2925 4525 Wire Wire Line 3025 4500 2925 4500 Text Label 3025 4500 0 50 ~ 0 Amp_Bias Text Label 3225 5175 2 50 ~ 0 CV_Scaled Wire Wire Line 2925 4925 2925 4950 Wire Wire Line 1925 4950 1925 4925 Wire Wire Line 3225 5175 3250 5175 Wire Wire Line 3250 5175 3250 4725 Wire Wire Line 3250 4725 3225 4725 Wire Wire Line 2425 4950 2425 5025 Wire Wire Line 2425 5325 2425 5500 Wire Wire Line 1825 5150 1475 5150 $Comp L Device:C C1 U 1 1 61482BE0 P 1975 5150 F 0 "C1" V 1723 5150 50 0000 C CNN F 1 "100pF" V 1814 5150 50 0000 C CNN F 2 "Capacitor_SMD:C_0402_1005Metric" H 2013 5000 50 0001 C CNN F 3 "~" H 1975 5150 50 0001 C CNN 1 1975 5150 0 1 -1 0 $EndComp Connection ~ 1475 5400 Wire Wire Line 1475 5600 1500 5600 Wire Wire Line 1475 5625 1475 5600 Wire Wire Line 1475 5400 1175 5400 Wire Wire Line 1175 5400 1175 5425 Connection ~ 1175 5400 Wire Wire Line 1500 5400 1475 5400 Wire Wire Line 1175 5375 1175 5400 $Comp L power:-15V #PWR0120 U 1 1 6105CBEB P 1175 5725 F 0 "#PWR0120" H 1175 5825 50 0001 C CNN F 1 "-15V" H 1190 5898 50 0000 C CNN F 2 "" H 1175 5725 50 0001 C CNN F 3 "" H 1175 5725 50 0001 C CNN 1 1175 5725 -1 0 0 1 $EndComp Text Label 1150 5050 2 50 ~ 0 AttenLinFM $Comp L power:GND #PWR0123 U 1 1 61023EBF P 1475 5625 F 0 "#PWR0123" H 1475 5375 50 0001 C CNN F 1 "GND" H 1480 5452 50 0000 C CNN F 2 "" H 1475 5625 50 0001 C CNN F 3 "" H 1475 5625 50 0001 C CNN 1 1475 5625 1 0 0 -1 $EndComp $Comp L Amplifier_Operational:TL074 U3 U 2 1 61015787 P 1800 5500 F 0 "U3" H 1800 5775 50 0000 C CNN F 1 "TL074" H 1800 5700 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 1750 5600 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 1850 5700 50 0001 C CNN 2 1800 5500 1 0 0 1 $EndComp Wire Wire Line 1925 4500 1475 4500 $Comp L Diode:1N4148WS D1 U 1 1 61730D86 P 2425 5700 F 0 "D1" V 2471 5620 50 0000 R CNN F 1 "1N4148WS" V 2380 5620 50 0000 R CNN F 2 "Diode_SMD:D_SOD-323" H 2425 5525 50 0001 C CNN F 3 "https://www.vishay.com/docs/85751/1n4148ws.pdf" H 2425 5700 50 0001 C CNN 1 2425 5700 0 1 -1 0 $EndComp Wire Wire Line 2125 5150 2150 5150 Wire Wire Line 2575 6050 2600 6050 $Comp L Device:R R51 U 1 1 617729FB P 2750 6050 F 0 "R51" V 2543 6050 50 0000 C CNN F 1 "1M" V 2634 6050 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 2680 6050 50 0001 C CNN F 3 "~" H 2750 6050 50 0001 C CNN 1 2750 6050 0 -1 1 0 $EndComp $Comp L power:GND #PWR0128 U 1 1 61772A01 P 2425 6200 F 0 "#PWR0128" H 2425 5950 50 0001 C CNN F 1 "GND" H 2425 6075 50 0000 C CNN F 2 "" H 2425 6200 50 0001 C CNN F 3 "" H 2425 6200 50 0001 C CNN 1 2425 6200 1 0 0 -1 $EndComp $Comp L Device:R_POT_TRIM R36 U 1 1 61772A07 P 2425 6050 F 0 "R36" H 2355 6096 50 0000 R CNN F 1 "100k" H 2355 6005 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3299X_Horizontal" H 2425 6050 50 0001 C CNN F 3 "~" H 2425 6050 50 0001 C CNN 1 2425 6050 1 0 0 -1 $EndComp Wire Wire Line 2425 5550 2425 5500 Wire Wire Line 2425 5850 2425 5900 Connection ~ 2425 5500 Wire Wire Line 2100 5500 2150 5500 Connection ~ 2150 5500 Wire Wire Line 2150 5500 2425 5500 Text Label 2925 6050 0 50 ~ 0 CV_In Text Label 1025 6300 2 50 ~ 0 LinFM Text Label 1325 6300 0 50 ~ 0 LinFM2LinAtten $Comp L Device:C C12 U 1 1 61B60634 P 1175 6300 F 0 "C12" V 923 6300 50 0000 C CNN F 1 "220nF" V 1014 6300 50 0000 C CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 1213 6150 50 0001 C CNN F 3 "~" H 1175 6300 50 0001 C CNN 1 1175 6300 0 1 1 0 $EndComp Wire Wire Line 1150 5050 1175 5050 Wire Wire Line 1175 5050 1175 5075 Wire Wire Line 2925 6050 2900 6050 Connection ~ 1475 5150 Wire Wire Line 1475 5150 1475 5400 Wire Wire Line 2150 5150 2150 5500 Wire Wire Line 5275 2450 5275 2600 Wire Wire Line 5925 2600 5925 2350 Wire Wire Line 5925 2350 5900 2350 $Comp L Amplifier_Operational:TL074 U3 U 3 1 5D50DE68 P 5600 2350 F 0 "U3" H 5700 2600 50 0000 C CNN F 1 "TL074" H 5700 2500 50 0000 C CNN F 2 "Package_SO:SOIC-14_3.9x8.7mm_P1.27mm" H 5550 2450 50 0001 C CNN F 3 "http://www.ti.com/lit/ds/symlink/tl071.pdf" H 5650 2550 50 0001 C CNN 3 5600 2350 1 0 0 -1 $EndComp Wire Wire Line 5025 2525 5175 2525 Wire Wire Line 5175 2575 5175 2525 Wire Wire Line 5275 2450 5300 2450 Wire Wire Line 5275 2600 5925 2600 Wire Wire Line 6000 2350 5925 2350 Wire Wire Line 3950 1275 3950 2300 Connection ~ 5925 2350 Wire Wire Line 5300 2250 5175 2250 Wire Wire Line 5175 2250 5175 2525 Connection ~ 5175 2525 Wire Wire Line 5025 2800 5000 2800 Wire Wire Line 5825 1475 5750 1475 Wire Wire Line 6125 1475 6200 1475 Wire Wire Line 6200 1475 6200 1500 Wire Notes Line style solid 3750 475 3750 3200 Wire Notes Line style solid 6475 475 6475 3200 Wire Notes Line style solid 6475 3200 3750 3200 Wire Notes Line 3750 800 6475 800 Wire Notes Line 3750 850 6475 850 Wire Notes Line style solid 3750 4850 6475 4850 Wire Notes Line 3750 5150 6475 5150 Wire Notes Line 3750 5200 6475 5200 Connection ~ 4175 6325 $Comp L power:+15V #PWR0133 U 1 1 5D77EE80 P 3950 6200 F 0 "#PWR0133" H 3950 6050 50 0001 C CNN F 1 "+15V" H 3965 6373 50 0000 C CNN F 2 "" H 3950 6200 50 0001 C CNN F 3 "" H 3950 6200 50 0001 C CNN 1 3950 6200 1 0 0 -1 $EndComp $Comp L Device:C C11 U 1 1 5D51269F P 4175 6175 F 0 "C11" H 4290 6221 50 0000 L CNN F 1 "100nF" H 4290 6130 50 0000 L CNN F 2 "Capacitor_SMD:C_0603_1608Metric" H 4213 6025 50 0001 C CNN F 3 "~" H 4175 6175 50 0001 C CNN 1 4175 6175 1 0 0 -1 $EndComp Connection ~ 4175 6025 Wire Wire Line 4500 6500 4500 6625 Wire Wire Line 4500 6625 4625 6625 Wire Wire Line 4425 6500 4500 6500 Connection ~ 4625 6625 Wire Wire Line 4075 6025 4075 6200 Wire Wire Line 4075 6200 3950 6200 Wire Wire Line 4075 6025 4175 6025 $Comp L power:+5V #PWR0156 U 1 1 603A0F51 P 4425 5550 F 0 "#PWR0156" H 4425 5400 50 0001 C CNN F 1 "+5V" H 4440 5723 50 0000 C CNN F 2 "" H 4425 5550 50 0001 C CNN F 3 "" H 4425 5550 50 0001 C CNN 1 4425 5550 1 0 0 -1 $EndComp $Comp L power:PWR_FLAG #FLG0104 U 1 1 603AAF6E P 4600 5475 F 0 "#FLG0104" H 4600 5550 50 0001 C CNN F 1 "PWR_FLAG" H 4600 5649 50 0000 C CNN F 2 "" H 4600 5475 50 0001 C CNN F 3 "~" H 4600 5475 50 0001 C CNN 1 4600 5475 1 0 0 -1 $EndComp Wire Wire Line 4600 5475 4600 5575 Wire Wire Line 4600 5575 4425 5575 Wire Wire Line 4425 5575 4425 5550 Wire Wire Line 5075 5475 5075 5700 Wire Wire Line 5975 5500 5975 5475 Connection ~ 5975 5500 Wire Wire Line 6125 5500 6125 5525 Wire Wire Line 5975 5500 6125 5500 Wire Wire Line 5975 5525 5975 5500 $Comp L power:+15V #PWR0143 U 1 1 610D6704 P 4925 5675 F 0 "#PWR0143" H 4925 5525 50 0001 C CNN F 1 "+15V" H 4940 5848 50 0000 C CNN F 2 "" H 4925 5675 50 0001 C CNN F 3 "" H 4925 5675 50 0001 C CNN 1 4925 5675 1 0 0 -1 $EndComp $Comp L power:-15V #PWR0162 U 1 1 5D56B054 P 5975 5525 F 0 "#PWR0162" H 5975 5625 50 0001 C CNN F 1 "-15V" H 5990 5698 50 0000 C CNN F 2 "" H 5975 5525 50 0001 C CNN F 3 "" H 5975 5525 50 0001 C CNN 1 5975 5525 -1 0 0 1 $EndComp $Comp L power:GND #PWR0161 U 1 1 5D560D30 P 5525 5475 F 0 "#PWR0161" H 5525 5225 50 0001 C CNN F 1 "GND" H 5530 5302 50 0000 C CNN F 2 "" H 5525 5475 50 0001 C CNN F 3 "" H 5525 5475 50 0001 C CNN 1 5525 5475 1 0 0 -1 $EndComp $Comp L power:PWR_FLAG #FLG0103 U 1 1 5D5567A3 P 5975 5475 F 0 "#FLG0103" H 5975 5550 50 0001 C CNN F 1 "PWR_FLAG" H 5975 5649 50 0000 C CNN F 2 "" H 5975 5475 50 0001 C CNN F 3 "~" H 5975 5475 50 0001 C CNN 1 5975 5475 -1 0 0 -1 $EndComp $Comp L power:PWR_FLAG #FLG0102 U 1 1 5D5566D0 P 5525 5475 F 0 "#FLG0102" H 5525 5550 50 0001 C CNN F 1 "PWR_FLAG" H 5525 5649 50 0000 C CNN F 2 "" H 5525 5475 50 0001 C CNN F 3 "~" H 5525 5475 50 0001 C CNN 1 5525 5475 1 0 0 -1 $EndComp $Comp L power:PWR_FLAG #FLG0101 U 1 1 5D5565F6 P 5075 5475 F 0 "#FLG0101" H 5075 5550 50 0001 C CNN F 1 "PWR_FLAG" H 5075 5649 50 0000 C CNN F 2 "" H 5075 5475 50 0001 C CNN F 3 "~" H 5075 5475 50 0001 C CNN 1 5075 5475 1 0 0 -1 $EndComp $Comp L power:VEE #PWR0105 U 1 1 6020AA6B P 6125 5525 F 0 "#PWR0105" H 6125 5375 50 0001 C CNN F 1 "VEE" H 6140 5698 50 0000 C CNN F 2 "" H 6125 5525 50 0001 C CNN F 3 "" H 6125 5525 50 0001 C CNN 1 6125 5525 1 0 0 1 $EndComp $Comp L power:VCC #PWR0109 U 1 1 5F671041 P 4750 5675 F 0 "#PWR0109" H 4750 5525 50 0001 C CNN F 1 "VCC" H 4767 5848 50 0000 C CNN F 2 "" H 4750 5675 50 0001 C CNN F 3 "" H 4750 5675 50 0001 C CNN 1 4750 5675 1 0 0 -1 $EndComp Wire Notes Line 6475 5800 3750 5800 Wire Notes Line style solid 7600 5800 7600 6775 Wire Notes Line style solid 6475 4850 6475 5800 Wire Notes Line style solid 7600 5800 6475 5800 Wire Notes Line style solid 7650 6775 7650 5750 Wire Notes Line style solid 7650 5750 6525 5750 Wire Notes Line style solid 3750 4800 3750 3250 Wire Notes Line style solid 3750 3250 6475 3250 Wire Notes Line 3775 7225 4275 7225 Text Notes 3750 3450 0 150 ~ 0 CONNECTORS Wire Notes Line style solid 6475 3250 6475 4800 Wire Notes Line style solid 6475 4800 3750 4800 Wire Notes Line style solid 6525 5750 6525 475 Wire Notes Line 3750 3450 5250 3450 Wire Notes Line 5250 3450 5250 3250 Wire Notes Line 3750 3475 5275 3475 Wire Notes Line 5275 3475 5275 3250 Wire Notes Line 6525 800 10525 800 Wire Notes Line 6525 850 10525 850 $Comp L Device:R R5 U 1 1 62F0F088 P 9025 1325 F 0 "R5" H 9095 1371 50 0000 L CNN F 1 "1k" H 9095 1280 50 0000 L CNN F 2 "Resistor_SMD:R_1206_3216Metric" V 8955 1325 50 0001 C CNN F 3 "~" H 9025 1325 50 0001 C CNN 1 9025 1325 1 0 0 -1 $EndComp Wire Wire Line 9050 1150 9025 1150 Wire Wire Line 9025 1150 9025 1175 Wire Wire Line 9025 1475 9025 1500 Wire Wire Line 9000 1500 9025 1500 Connection ~ 9025 1500 Wire Wire Line 9025 1500 9025 1525 Wire Notes Line style solid 7650 6350 10525 6350 $Comp L Device:R R22 U 1 1 61069B3B P 7300 4700 F 0 "R22" V 7093 4700 50 0000 C CNN F 1 "20k" V 7184 4700 50 0000 C CNN F 2 "Resistor_SMD:R_0402_1005Metric" V 7230 4700 50 0001 C CNN F 3 "~" H 7300 4700 50 0001 C CNN 1 7300 4700 0 1 1 0 $EndComp Wire Wire Line 7550 5025 7575 5025 Wire Wire Line 7150 4700 6925 4700 Wire Wire Line 7450 4700 7575 4700 Wire Wire Line 7575 4700 7575 5025 Wire Wire Line 6950 5375 6950 5125 Connection ~ 6925 4700 Wire Wire Line 6925 4700 6925 4925 Text Label 6925 5375 2 50 ~ 0 Hysteresis Wire Notes Line 6525 2450 10525 2450 Wire Notes Line 6525 3975 10525 3975 Wire Notes Line 9275 850 9275 2450 $Comp L power:GND #PWR0144 U 1 1 615D552F P 7400 3650 F 0 "#PWR0144" H 7400 3400 50 0001 C CNN F 1 "GND" H 7405 3477 50 0000 C CNN F 2 "" H 7400 3650 50 0001 C CNN F 3 "" H 7400 3650 50 0001 C CNN 1 7400 3650 1 0 0 -1 $EndComp Wire Wire Line 7400 3650 7400 3625 Wire Wire Line 7400 3625 7425 3625 Wire Wire Line 8050 3225 8050 3375 Wire Wire Line 8050 3525 8025 3525 Wire Wire Line 7775 3225 8050 3225 Wire Wire Line 8100 3375 8050 3375 Connection ~ 8050 3375 Wire Wire Line 8050 3375 8050 3525 Wire Wire Line 7275 3225 7275 3550 Wire Wire Line 7425 3425 7400 3425 Wire Wire Line 7400 3425 7400 3225 Connection ~ 7400 3225 Wire Wire Line 7400 3225 7275 3225 Wire Wire Line 9950 4725 9950 4750 Wire Wire Line 9225 4500 9225 4750 Wire Wire Line 9950 4775 9950 4750 Connection ~ 9950 4750 Wire Wire Line 9850 5100 9875 5100 Wire Wire Line 9075 4425 9075 4300 Wire Wire Line 9075 4725 9075 4825 Wire Wire Line 9875 4825 9875 5100 Connection ~ 9875 5100 Wire Wire Line 9875 5100 9950 5100 Connection ~ 9075 4300 Wire Wire Line 9075 4300 9250 4300 Wire Wire Line 9075 4825 9875 4825 Wire Wire Line 9000 4300 9075 4300 Wire Wire Line 2725 1750 2700 1750 Wire Wire Line 2700 1775 2700 1750 Connection ~ 2700 1750 Wire Wire Line 2700 1750 2675 1750 Wire Notes Line style solid 3750 4850 3750 8025 Wire Notes Line style solid 3700 475 3700 8025 Wire Notes Line 3750 6775 6275 6775 $Comp L power:GND #PWR0118 U 1 1 611F92F0 P 1475 3200 F 0 "#PWR0118" H 1475 2950 50 0001 C CNN F 1 "GND" H 1480 3027 50 0000 C CNN F 2 "" H 1475 3200 50 0001 C CNN F 3 "" H 1475 3200 50 0001 C CNN 1 1475 3200 1 0 0 -1 $EndComp Wire Wire Line 1925 4525 1925 4500 Wire Wire Line 1475 4500 1475 5150 Wire Wire Line 6925 5375 6950 5375 Wire Wire Line 7625 4700 7575 4700 Connection ~ 7575 4700 Wire Notes Line 7650 5750 7650 4775 Wire Notes Line 7650 4775 8050 4775 Wire Notes Line 8050 4775 8050 3975 Wire Wire Line 7500 975 7550 975 Wire Wire Line 7550 1000 7550 975 Connection ~ 7550 975 Wire Wire Line 7550 975 8225 975 Wire Wire Line 8525 975 8550 975 Wire Wire Line 8550 975 8550 1400 Connection ~ 8550 1400 Wire Wire Line 8550 1400 8600 1400 Wire Wire Line 7275 1400 7275 1300 Wire Wire Line 7275 1300 7550 1300 Wire Wire Line 8100 1925 8100 1950 Wire Wire Line 8100 1950 8150 1950 $Comp L Device:R_POT_TRIM R24 U 1 1 5D5AB46E P 8300 1950 F 0 "R24" H 8230 1996 50 0000 R CNN F 1 "100k" H 8230 1905 50 0000 R CNN F 2 "Potentiometer_THT:Potentiometer_Bourns_3299X_Horizontal" H 8300 1950 50 0001 C CNN F 3 "~" H 8300 1950 50 0001 C CNN 1 8300 1950 -1 0 0 1 $EndComp $Comp L power:GND #PWR? U 1 1 60FE9BA8 P 3825 7800 F 0 "#PWR?" H 3825 7550 50 0001 C CNN F 1 "GND" H 3830 7627 50 0000 C CNN F 2 "" H 3825 7800 50 0001 C CNN F 3 "" H 3825 7800 50 0001 C CNN 1 3825 7800 1 0 0 -1 $EndComp Wire Notes Line 4275 7225 4275 8025 $Comp L Transistor_BJT:MMDT3906 Q2 U 1 1 60FE09F4 P 1825 4725 F 0 "Q2" H 2016 4771 50 0000 L CNN F 1 "MMDT3906" H 2016 4680 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-363_SC-70-6" H 2025 4825 50 0001 C CNN F 3 "http://www.diodes.com/_files/datasheets/ds30124.pdf" H 1825 4725 50 0001 C CNN 1 1825 4725 1 0 0 -1 $EndComp $Comp L Transistor_BJT:MMDT3906 Q2 U 2 1 60FF551B P 3025 4725 F 0 "Q2" H 3216 4771 50 0000 L CNN F 1 "MMDT3906" H 3216 4680 50 0000 L CNN F 2 "Package_TO_SOT_SMD:SOT-363_SC-70-6" H 3225 4825 50 0001 C CNN F 3 "http://www.diodes.com/_files/datasheets/ds30124.pdf" H 3025 4725 50 0001 C CNN 2 3025 4725 -1 0 0 -1 $EndComp Wire Wire Line 1925 4950 2425 4950 Wire Wire Line 2425 4950 2925 4950 Connection ~ 2425 4950 $EndSCHEMATC