Search found 461 matches

The trimmer is connected with two pins one of it's outer legs, and the wiper with the other outer leg conected together. Doesn't matter which one you're usig only the direction of the resistance getti ...

I think i would save the CA3080 and use the LM13700 instead... unless there is something powered on a single supply or to use the W.Jung trick or in an case of a 1 to 1 replacement i think their are t ...

Putting a cap in parallel to the 680nF cap should extend the time. Perhaps make it switchable, one lug of the new cap to gnd the other to the switch and the second lug of the switch to hte junction of ...

Without looking too much into it, i tend to say that you can adjust the offset if you play around with the values of R17 and R21.

what fixed the sine?

and btw. can those distorted looks on your waveshapes come from your oscilloscope AC vs DC coupled?

Then perhaps try another LM13700 and as i looked into my outprint of the schematic i saw that i reduced R34 from 100K to 56K, at least i marked it on the paper...

There was a fix to boost the sine wave amplitude posted here somewhere... I think it was in this thread somewhere within the first 10 sides or so...

Give it a look/search and enjoy this nice VCO.
...

lol... had just started a thread over at muffs one or rwo weeks ago, as i ran into some issues which i could solve then on my own... initially was a bit surprised as there was a reply on electro-music ...

2. VCO which pitch depends on the supply voltage is a very bad design and should be avoided or modded (in such a way I've modded TH VCO Maximus, for example).

ehmmm... tell that Thomas Henry or a ...

Not having checked your schematic at all but a TL072 is naturally suitable for dual supplies. If you want to build an comparator on a single supply use an LM358 instead. Otherwise the TLC07X series ar ...

Regarding your implementation of resetable fuses, if you use them on or before every module i guess you could get away with it, but when you use them on the main power rails bus board you might get so ...

can you post some Images of the top and Bottom side of your PCB with a good Resolution?
It's soldering on universal board Smile

doesn't matter, just post it, so that People can see and give some Feed ...

can you post some Images of the top and Bottom side of your PCB with a good Resolution?

as pointed out before… there is this ring to adjust the steps… but with this Kind of switches i usually have some Problems as the stopper often refuses to work correctly at mine… you have to ens ...

if you want an LFO-like module that can be synced to another LFO you would Need something like an VCS, DUSG or any of it re-incarantion or any Kind of an slope-generator that can be voltage controlled ...

As far as i remember the noisy resonance pot was just an issue on the CGS Version... not that i haven't noticed it on my Yusynth Version...

I can vaguely remember having done some modifications on ...

here's a better drawn schematic:

http://modular.fonik.de/pdf/Wasp%20Filter%20clone.pdf

it's almost similar except that there are 2 protection diodes (Bat85) added.

cheers and welcome to the ...

howard giving his pension away ... you can always donate of course .. there is a donate thingie on the front page.

...good that you mentioned this… Wink

Well got back from work… already did yesterday, but forgot to Reply...

After digging out the case buried deep under several tons of electronic trash and other stuff, i can tell you that i did at ...

regarding your Problem with the resonance starting too early this can be solved by playing around with the 51k resistor… if i remember Right it has to be increased too reduce resonance and thus the ...

Themenbereich Habich Modedesigner my cs15. But i'm St work right now, GEZ back later when@ Home.

Auto correction:)

I Wrote i modded my cs15 And Not that i am a Modedesigner. Lol

As someone mentioned before i guess this circuit would greatly benefit from buffering it's output.

I usually stick to these trimpots from Reichelt:

https://www.reichelt.de/praezisionspotentiometer-25-gaenge-stehend-1-0-kohm-64y-1-0k-p2711.html?&trstct=pol_14

Regarding the Suntano, are t ...

does this appear also when you replace the 10k resistors at the OTA bias Inputs with larger ones say somethin between 15k or 27k?

The Filters behaviour then should be more tame and it's not working ...

Nice to hear you got that solved… and don't worry i made all my boards on stripboard and i know how often i do some mistakes which cause me several headaches and Hours of Debugging before i spot the ...

Author	Message
Topic: The VCO-555
wackelpeter Replies: 479 Views: 588065	Posted: Wed Jul 22, 2020 1:58 am Subject: The VCO-555 Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 479 Views: 588065	The trimmer is connected with two pins one of it's outer legs, and the wiper with the other outer leg conected together. Doesn't matter which one you're usig only the direction of the resistance getti ...
Topic: CEM chips Clones, Can somebody confirm if this is true?
wackelpeter Replies: 6 Views: 10366	Posted: Tue Jun 16, 2020 11:39 am Subject: CEM chips Clones, Can somebody confirm if this is true? Forum: Instruments and Equipment » General Discussion
wackelpeter Replies: 6 Views: 10366	I think i would save the CA3080 and use the LM13700 instead... unless there is something powered on a single supply or to use the W.Jung trick or in an case of a 1 to 1 replacement i think their are t ...
Topic: slew limiter LINEAR mode time
wackelpeter Replies: 2 Views: 3107	Posted: Sat May 02, 2020 12:41 pm Subject: slew limiter LINEAR mode time Forum: DIY Hardware and Software » YuSynth
wackelpeter Replies: 2 Views: 3107	Putting a cap in parallel to the 680nF cap should extend the time. Perhaps make it switchable, one lug of the new cap to gnd the other to the switch and the second lug of the switch to hte junction of ...
Topic: The VCO-555
wackelpeter Replies: 479 Views: 588065	Posted: Wed Apr 22, 2020 6:35 am Subject: The VCO-555 Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 479 Views: 588065	Without looking too much into it, i tend to say that you can adjust the offset if you play around with the values of R17 and R21.
Topic: The VCO-555
wackelpeter Replies: 479 Views: 588065	Posted: Tue Apr 21, 2020 2:00 am Subject: The VCO-555 Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 479 Views: 588065	what fixed the sine? and btw. can those distorted looks on your waveshapes come from your oscilloscope AC vs DC coupled?
Topic: The VCO-555
wackelpeter Replies: 479 Views: 588065	Posted: Sun Apr 19, 2020 9:48 am Subject: The VCO-555 Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 479 Views: 588065	Then perhaps try another LM13700 and as i looked into my outprint of the schematic i saw that i reduced R34 from 100K to 56K, at least i marked it on the paper...
Topic: The VCO-555
wackelpeter Replies: 479 Views: 588065	Posted: Fri Apr 17, 2020 3:05 pm Subject: The VCO-555 Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 479 Views: 588065	There was a fix to boost the sine wave amplitude posted here somewhere... I think it was in this thread somewhere within the first 10 sides or so... Give it a look/search and enjoy this nice VCO. ...
Topic: cgs programmer/sequencer
wackelpeter Replies: 52 Views: 82163	Posted: Wed Oct 30, 2019 8:23 am Subject: cgs programmer/sequencer Forum: DIY Hardware and Software » Ken Stone designs - CGS
wackelpeter Replies: 52 Views: 82163	lol... had just started a thread over at muffs one or rwo weeks ago, as i ran into some issues which i could solve then on my own... initially was a bit surprised as there was a reply on electro-music ...
Topic: Few questions regarding reverse polarity protection..
wackelpeter Replies: 21 Views: 11436	Posted: Fri Aug 23, 2019 2:32 am Subject: Few questions regarding reverse polarity protection.. Forum: DIY Hardware and Software
wackelpeter Replies: 21 Views: 11436	2. VCO which pitch depends on the supply voltage is a very bad design and should be avoided or modded (in such a way I've modded TH VCO Maximus, for example). ehmmm... tell that Thomas Henry or a ...
Topic: Wiring a this Comparator for single supply ?
wackelpeter Replies: 8 Views: 8513	Posted: Thu Aug 22, 2019 10:39 pm Subject: Wiring a this Comparator for single supply ? Forum: DIY Hardware and Software » Circuit Bending
wackelpeter Replies: 8 Views: 8513	Not having checked your schematic at all but a TL072 is naturally suitable for dual supplies. If you want to build an comparator on a single supply use an LM358 instead. Otherwise the TLC07X series ar ...
Topic: Few questions regarding reverse polarity protection..
wackelpeter Replies: 21 Views: 11436	Posted: Thu Aug 22, 2019 10:19 pm Subject: Few questions regarding reverse polarity protection.. Forum: DIY Hardware and Software
wackelpeter Replies: 21 Views: 11436	Regarding your implementation of resetable fuses, if you use them on or before every module i guess you could get away with it, but when you use them on the main power rails bus board you might get so ...
Topic: MS20 LPF clone cutoff
wackelpeter Replies: 6 Views: 6230	Posted: Mon Jul 22, 2019 7:20 am Subject: MS20 LPF clone cutoff Forum: DIY Hardware and Software » The layout factory
wackelpeter Replies: 6 Views: 6230	can you post some Images of the top and Bottom side of your PCB with a good Resolution? It's soldering on universal board doesn't matter, just post it, so that People can see and give some Feed ...
Topic: MS20 LPF clone cutoff
wackelpeter Replies: 6 Views: 6230	Posted: Sun Jul 21, 2019 1:57 am Subject: MS20 LPF clone cutoff Forum: DIY Hardware and Software » The layout factory
wackelpeter Replies: 6 Views: 6230	can you post some Images of the top and Bottom side of your PCB with a good Resolution?
Topic: Analog VCO-first thing-octave select-rotary switch question
wackelpeter Replies: 25 Views: 15535	Posted: Sun Jul 21, 2019 1:54 am Subject: Analog VCO-first thing-octave select-rotary switch question Forum: DIY Hardware and Software » The layout factory
wackelpeter Replies: 25 Views: 15535	as pointed out before… there is this ring to adjust the steps… but with this Kind of switches i usually have some Problems as the stopper often refuses to work correctly at mine… you have to ens ...
Topic: LFO question
wackelpeter Replies: 2 Views: 3329	Posted: Thu Jun 13, 2019 11:04 am Subject: LFO question Forum: DIY Hardware and Software » Developers' Corner
wackelpeter Replies: 2 Views: 3329	if you want an LFO-like module that can be synced to another LFO you would Need something like an VCS, DUSG or any of it re-incarantion or any Kind of an slope-generator that can be voltage controlled ...
Topic: Yusynth Steiner Filter stomp box - 50Hz Hum issue
wackelpeter Replies: 16 Views: 14608	Posted: Sat May 18, 2019 1:55 pm Subject: Yusynth Steiner Filter stomp box - 50Hz Hum issue Forum: DIY Hardware and Software » YuSynth
wackelpeter Replies: 16 Views: 14608	As far as i remember the noisy resonance pot was just an issue on the CGS Version... not that i haven't noticed it on my Yusynth Version... I can vaguely remember having done some modifications on ...
Topic: Question about JHaible's Wasp Schematic
wackelpeter Replies: 2 Views: 6344	Posted: Thu Apr 25, 2019 9:27 am Subject: Question about JHaible's Wasp Schematic Forum: DIY Hardware and Software » Jürgen Haible designs
wackelpeter Replies: 2 Views: 6344	here's a better drawn schematic: http://modular.fonik.de/pdf/Wasp%20Filter%20clone.pdf it's almost similar except that there are 2 protection diodes (Bat85) added. cheers and welcome to the ...
Topic: Muff's is down hard
wackelpeter Replies: 23 Views: 18330	Posted: Mon Apr 22, 2019 11:28 am Subject: Muff's is down hard Forum: News... » Miscellaneous News
wackelpeter Replies: 23 Views: 18330	howard giving his pension away ... you can always donate of course .. there is a donate thingie on the front page. ...good that you mentioned this…
Topic: Yamaha CS-15 Filter CV In Jack?
wackelpeter Replies: 4 Views: 4134	Posted: Fri Mar 15, 2019 9:08 am Subject: Yamaha CS-15 Filter CV In Jack? Forum: DIY Hardware and Software
wackelpeter Replies: 4 Views: 4134	Well got back from work… already did yesterday, but forgot to Reply... After digging out the case buried deep under several tons of electronic trash and other stuff, i can tell you that i did at ...
Topic: Resonant Lopass Gate PCB's (New Batch 4/29/12)
wackelpeter Replies: 926 Views: 738443	Posted: Fri Mar 15, 2019 8:51 am Subject: Resonant Lopass Gate PCB's (New Batch 4/29/12) Forum: DIY Hardware and Software
wackelpeter Replies: 926 Views: 738443	regarding your Problem with the resonance starting too early this can be solved by playing around with the 51k resistor… if i remember Right it has to be increased too reduce resonance and thus the ...
Topic: Yamaha CS-15 Filter CV In Jack?
wackelpeter Replies: 4 Views: 4134	Posted: Thu Mar 14, 2019 2:57 am Subject: Yamaha CS-15 Filter CV In Jack? Forum: DIY Hardware and Software
wackelpeter Replies: 4 Views: 4134	Themenbereich Habich Modedesigner my cs15. But i'm St work right now, GEZ back later when@ Home. Auto correction:) I Wrote i modded my cs15 And Not that i am a Modedesigner. Lol
Topic: Very simple sawtooth VCO (V/Hz)
wackelpeter Replies: 92 Views: 184973	Posted: Mon Feb 11, 2019 3:47 am Subject: Very simple sawtooth VCO (V/Hz) Forum: DIY Hardware and Software
wackelpeter Replies: 92 Views: 184973	As someone mentioned before i guess this circuit would greatly benefit from buffering it's output.
Topic: Capacitors and trimpots for Haible String Filter
wackelpeter Replies: 3 Views: 6756	Posted: Mon Feb 11, 2019 3:40 am Subject: Capacitors and trimpots for Haible String Filter Forum: DIY Hardware and Software » Jürgen Haible designs
wackelpeter Replies: 3 Views: 6756	I usually stick to these trimpots from Reichelt: https://www.reichelt.de/praezisionspotentiometer-25-gaenge-stehend-1-0-kohm-64y-1-0k-p2711.html?&trstct=pol_14 Regarding the Suntano, are t ...
Topic: Rene Schmidt MS20 filter: when I crank CV output goes silent
wackelpeter Replies: 8 Views: 11482	Posted: Mon Feb 04, 2019 8:52 am Subject: Rene Schmidt MS20 filter: when I crank CV output goes silent Forum: DIY Hardware and Software » The Repair Shop
wackelpeter Replies: 8 Views: 11482	does this appear also when you replace the 10k resistors at the OTA bias Inputs with larger ones say somethin between 15k or 27k? The Filters behaviour then should be more tame and it's not working ...
Topic: VCF-1 OTA problem
wackelpeter Replies: 3 Views: 6285	Posted: Mon Feb 04, 2019 8:41 am Subject: VCF-1 OTA problem Forum: DIY Hardware and Software » Thomas Henry designs
wackelpeter Replies: 3 Views: 6285	Nice to hear you got that solved… and don't worry i made all my boards on stripboard and i know how often i do some mistakes which cause me several headaches and Hours of Debugging before i spot the ...