[sdiy] OTA CV feedthrough suppression?

[GEORGE HEARN]

Have you tried trimming the offset out?  The process is to adjust a bias voltage applied to one input and adjust for no output at maximum Iabc.  Also depends what configuration the circuit is in, I'm not sure how successful using the linearizing diodes is with CV attenuation/modulation.  George

--- On Fri, 4/12/09, Karl Ekdahl <elektrodwarf at yahoo.se> wrote:

> From: Karl Ekdahl <elektrodwarf at yahoo.se>
> Subject: [sdiy] OTA CV feedthrough suppression?
> To: synth-diy at dropmix.xs4all.nl
> Date: Friday, 4 December, 2009, 15:05
> Hi list, so working on a VCA both for
> use with CV and Audio and i noticed some CV feedthrough, and
> was wondering if there's any commonly used tricks for
> getting rid of it in a LM13700-based circuit? Are these just
> no good for voltage-controlled CV
> amplification/attenuation?
> 
> Thanks
> 
> Karl
> 
> 
>      
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