Kunthrandum - OpAmp biased MOSFET amp

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The simulated currents at both mosfet sources are shown in the figure. Using 1Vp-p, 10kHz at input, I found no problems. Please give me more details about the cross-conduction problem. I'm using LTspice here. What was the voltage across bias capacitor..?

Sometimes I get starting problems which could be eliminated by starting the 'quiescent current adj.' voltage from zero.
 

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Heyyy...

SORRY... I saw high cross conduction when I simulated the circuit with High gate capacitance mosfets, feed with a High-High signal (30Vp-p@200kHz). The circuit will smoke.

I've modified the circuit and posted it on my website. Now it is OK in such conditions. Using current mirrors instead R15 & R16 in the previous circuit works also.

Please donate...
 
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This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.