Inverter to non-inverter cct

jorgen.bergfors at idg.se jorgen.bergfors at idg.se
Tue Feb 23 13:25:28 CET 1999


Yes, it will work fine, if you use a 10k pot. But I would suggest that you change all resistors to 47k (or 51k), including the pot.  Otherwise the input impedance might be a little on the low side.
I use exacly this circuit myself on all modulation inputs.

Good luck
/Jorgen





MIME:jbrookes at bluebear.freeserve.co.uk on 99-02-23 13:14:24
To:  synth-diy at mailhost.bpa.nl @ SMTP cc:  (bcc: Jorgen Bergfors/IDGSE)
Subject: Inverter to non-inverter cct 

I've scoured my collection of circuits but couldn't find a circuit I'm after
but I've seen it somewhere. So naturally I turn to you guys for help
(again!)

I want a circuit that you can vary the gain from +1 to -1 (i.e. inverting)
and I came up with this circuit (attached). Is it going to work?






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