MOSFET Amplifier Stage (CB26315E)

Found in a 1990s Popular Electronics, this circuit uses a small transformer matched to the impedance of the speaker being driven.

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FET Bridge Rectifier (CB6404E)
This circuit was found in a 1970 American publication. The FETs are power types according to the...
Triggered Damped Oscillator (CB13441E)
This circuit is from a 1974 publication. It generates a pulse with several sinusoidal cycles from...
Zener diode limiter (CB8377E)
Suggested by Philips in 1966 documentation, this limiter can be found elsewhere on this website....