Three-phase power supply (CB23680E)

This circuit was found in Radio Electronics magazine from July 1960. The components used are transistors of the time.

Divide-by-3 Counter - 4018 (CB165E)
To divide by an odd number‘ means not only the need for flip-flops, but some additional logic too. The...
500 kHz to 500 MHz Amplifier (CB13388E)
This circuit, from a 1975 technical documentation provides a gain of 14 dB at signals from 500 kHz to...
RF Comparator (CB22319E)
This circuit was found in American documentation from the 60's. The transistors are made of...