Square sawtooth converter (CB8926E)

We found this circuit in a 1967 American documentation. The diodes are general-purpose and the input frequency can be between 80 and 800 Hz.

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Simple Alarm (CB4534E)
I found this circuit in an English magazine from July 1982. The circuit is still viable because all...
High Power Source (CB20214E)
This 75 W power supply was found in American documentation from the 1980s. Transistors can be...
Simple 3W Amplifier (CB18168E)
This simple transistor amplifier is from 1982 documentation. The output transistor must be mounted on...