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Re: Sawtooth waveform by simple BJTs, but dips at the top.


 

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Since the foreign thread was talking about 'AKO' (a kind of), talking about inherited model params, may I ask , if applied eg: .model 2N3904_mod AKO 2N3904,?
Then I just want to modify the Cje from 8 pf to 0. How to specify the new 2N3904_mod's Cje in the same simulation file ?
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Thank you very much.
Best regards.
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I added this '.model TM1 ako: 2N3904 ?npn Cje=0', and changed the value of Q2 to 'TM1'. It didn't run out any error message.
I guess the syntax is correct, though not take effect to eliminate the glitch, the wire changed mentioned previously of 'C2 from cathode of D1 to Vcc' is much better.
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FYR
Thank you very much.
Wish you happy & good healthy.
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