Playing with Nelson's puzzle.

[bobodioulasso]

Hi all,

I do dot know if this has been already done...


Derivated from the Aleph j schematic:
Taking the lower half of it and drawing its symetrical as upper half.

I think it should work, though a question remains to me about the feedback: Do we need a leg to ground at the inverting input? (Jfets gate)

[Zen Mod]

already done , and even not just by Papa

dunno where was that posted , few years ago

anyway - F5 is practically same ........ with Spice ( and I'm not meaning on sim prog )

[Nelson Pass]

To answer the question, a matching resistor to ground would
give the circuit a better CMRR on the balanced input.

[bobodioulasso]

Thanks for your reply, Nelson.