Search found 5 matches

I just did a second vco with the same components, had the same problem with tunning. Problem solved the same way. Must be my components values.

For trimming i followed the steps on the yusynth site. So i trimmed in this order : waveshape-->V/oct-->tunning

I have a second vco to make, do you think i should trim the tunning right after ...

Thank you very much for the answer. I just tried to change r8 by a 270k resistor.
The trimmer range is now good. Trimmering was quite sensitive maybe 270k is a bit low but that was the only value I h ...

Thank you for your answer. Here is the schematic:

http://yusynth.net/Modular/Commun/VCO/VCO-V2-sch.gif

The trimmer T1 is next to the 5 inputs at the left.
So i should just put a resistor betwe ...

Hello,
I recently made the yusynth vco with the AS394CN. Today i tried to trim my circuit. The waveshapes and volt/oct tracking are working very nicely.
My problem is for the tuning, when T1 is at ...

Author	Message
Topic: problem: vco tuning
pablop Replies: 8 Views: 8259	Posted: Fri Aug 24, 2018 6:02 pm Subject: problem: vco tuning Forum: DIY Hardware and Software » YuSynth
pablop Replies: 8 Views: 8259	I just did a second vco with the same components, had the same problem with tunning. Problem solved the same way. Must be my components values.
Topic: problem: vco tuning
pablop Replies: 8 Views: 8259	Posted: Wed Aug 22, 2018 1:27 pm Subject: problem: vco tuning Forum: DIY Hardware and Software » YuSynth
pablop Replies: 8 Views: 8259	For trimming i followed the steps on the yusynth site. So i trimmed in this order : waveshape-->V/oct-->tunning I have a second vco to make, do you think i should trim the tunning right after ...
Topic: problem: vco tuning
pablop Replies: 8 Views: 8259	Posted: Wed Aug 22, 2018 1:14 pm Subject: problem: vco tuning Forum: DIY Hardware and Software » YuSynth
pablop Replies: 8 Views: 8259	Thank you very much for the answer. I just tried to change r8 by a 270k resistor. The trimmer range is now good. Trimmering was quite sensitive maybe 270k is a bit low but that was the only value I h ...
Topic: problem: vco tuning
pablop Replies: 8 Views: 8259	Posted: Wed Aug 22, 2018 10:47 am Subject: problem: vco tuning Forum: DIY Hardware and Software » YuSynth
pablop Replies: 8 Views: 8259	Thank you for your answer. Here is the schematic: http://yusynth.net/Modular/Commun/VCO/VCO-V2-sch.gif The trimmer T1 is next to the 5 inputs at the left. So i should just put a resistor betwe ...
Topic: problem: vco tuning
pablop Replies: 8 Views: 8259	Posted: Wed Aug 22, 2018 8:51 am Subject: problem: vco tuning Forum: DIY Hardware and Software » YuSynth
pablop Replies: 8 Views: 8259	Hello, I recently made the yusynth vco with the AS394CN. Today i tried to trim my circuit. The waveshapes and volt/oct tracking are working very nicely. My problem is for the tuning, when T1 is at ...