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 Forum index » DIY Hardware and Software » YuSynth
Yusynth vco, hi freq compensation problem
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danze2003



Joined: Jun 13, 2010
Posts: 3
Location: Argentina

PostPosted: Tue May 31, 2016 3:07 pm    Post subject: Yusynth vco, hi freq compensation problem
Subject description: Problem report
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Hi everyone, im Martin from Argentina.
I think there is an easily fixable little problem on Yousynth vco schematics/layout.
R53 must be conected down R15 on ub3 7th pin. I ve done that on my vcos and now they track even better.
If R53 is connected over R15, the group R53/D2 will see the same voltage every time so there will be no hi track compensation, just some fixed voltage difference from the theorical. This fixed voltage difference is delta Vbe from the exponensiator current reference transistor.
Hope this will be usefull.
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Grumble



Joined: Nov 23, 2015
Posts: 1294
Location: Netherlands
Audio files: 30

PostPosted: Tue May 31, 2016 10:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

this would be so much more interresting for anyone not knowing the yusynth diagram by heart! Rolling Eyes
so, please add schematics or at least add a link to the schematics when you post something like this.
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danze2003



Joined: Jun 13, 2010
Posts: 3
Location: Argentina

PostPosted: Wed Jun 01, 2016 1:04 pm    Post subject: Reply with quote  Mark this post and the followings unread

Grumble wrote:
this would be so much more interresting for anyone not knowing the yusynth diagram by heart! Rolling Eyes
so, please add schematics or at least add a link to the schematics when you post something like this.


Im sorry. Just enter in yusynth page, yusynth modular project, and look for the only vco available.
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