[sdiy] Inverting/noninverting attenuator circuit

[Peter Grenader]

Actiualy, it was the voltage doubler currently in Milton that Rene helped me
with!

GIzmo a bit different from this, uses 12 components, including a 2k trimmer
and two op amps, (input buffering amp) as well prior to the pot  and output
amp for tuning the null point to dead center.

René Schmitz wrote:

> Hi all,
> 
> Here is a circuit that I occasionally posted here before which does
> this. You can add a second trimmer between the two 10k pots to adjust
> the position of the dead spot.
> If I'm not mistaken this is what was the inspiration for Peter Grenaders
> version, I remember discussing it with him the last time I posted it.
> 
> Cheers,
> René
> 
> j vallier wrote:
>> Hi
>> 
>> Anyone have a simple circuit for taking a signal and creating
>> inverting/noninverting outputs with a single knob that mixes between
>> them? Kinda similar to the Serge paradigm of CV signals--even better
>> would be the "dead spot" Serge attenuators seem to have at the 12
>> o'clock position...
>> 
>> I want to use it to mix either + or - audio feedback in a circuit I'm
>> building. I found a possible example with the input on Tim Ressel's
>> VCLFO circuit on his website. If there's any better ideas, I'm all ears.
>> 
>> thanks
>> 
>> Peff
>> 
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