The input impedance of the jfets will be higher, due to transconductance being inferior to bjt. Input offset will also be higher with jfets due to mismatch between devices.
bjt input offset should be really close to zero, especially if you use dual matched monolitic (ssm2210 / 2220 for example).
bjt input offset should be really close to zero, especially if you use dual matched monolitic (ssm2210 / 2220 for example).
The input impedance of the jfets will be higher, due to transconductance being inferior to bjt. Input offset will also be higher with jfets due to mismatch between devices.
bjt input offset should be really close to zero, especially if you use dual matched monolitic (ssm2210 / 2220 for example).
JFet JFet JFet 🙂
I don't have LTSPICE but I would think the outputs could be combine with a cascode and this servoed so that the coupling caps could be eliminated. Has anyone tried this?
Post #3, 14.
But you need differential in and get differential out. Adds tremendous amount of complexity and cost, which is fine for some (just not most of us.) But I was thinking a single ended design could be done without the caps.
I don't have LTSPICE but I would think the outputs could be combine with a cascode and this servoed so that the coupling caps could be eliminated. Has anyone tried this?
Since it's your idea, it would be only fair from you to make it work... 🙄
The symmetry police?
The Spanish Inquisition?
![]()
Thanks, I needed that.
(P.S. And thanks for all the great circuits. I can wait to build one of the balanced preamps and balanced MOSFET amps - very simple and yet very promising)
The Spanish Inquisition?![]()
Somehow, retinal images appear of NP on top of the Sea Ranch roof during the weekends.

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The symmetry police?
The Spanish Inquisition?
![]()
In my opinion, it's more like Germaniacally Balanced?
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What stops you from using one half (left or right) of the balanced circuit ?
electronics knowledge?
"Our chief weapon is surprise...surprise and fear...fear and surprise.... Our two weapons are fear and surprise...and ruthless efficiency.... Our *three* weapons are fear, surprise, and ruthless efficiency...and an almost fanatical devotion to the Pope.... Our *four*...no... *Amongst* our weapons.... Amongst our weaponry...are such elements as fear, surprise...."
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Somehow, retinal images appear of NP on top of the Sea Ranch roof during the weekends.![]()
Here's the image at the moment.
😎
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