Tuner with MOSFET (CB6914E)

This circuit serves as a reference for the components used and the time. The circuit is from 1967 RCA documentation. MOSFETs from that time are used.

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500 mW push-pull amplifier (CB21795E)
This circuit was found in a Mullard transistor manual from 1960. Note the symmetrical power...
Speaker Remote Control (CB23765E)
With the shadow over the sensor, it is possible to interrupt the sound of your amplifier using this...
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This circuit puts the battery in the circuit when the voltage of a source is cut, preventing it...