Folded cascode amplifier

125

00:59:03

Same principle as the regular cascode, as in common emitter amplifier feeding a common base amplifier, but using a PNP instead of an NPN.

I actually built this circuit today and the real circuit performed incredibly well gain of 326 at 1Khz, -3db point greater than 1 MHz. I used a bc549c for the NPN a 2n3904 for the PNP and a bc517 for the Darlington buffer.

published 8 years ago

gasboss775

7 years ago

Correction : The PNP was 2n3906 NOT 2n3904.

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