Found in a General Electric documentation from 1970, this circuit consists of a relaxation oscillator that uses a transistor from that time.
Found in a 1980s American publication for amateur radio this circuit uses components from the era. The...
Suggested by a Philips documentation from 1970, this circuit uses period components, operating at 50...
This circuit was found in Motorola's 1967 documentation. The circuit makes use of power...