This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
Found in American documentation from 1968, this circuit uses both diodes and a neon lamp to...
This circuit was found in a Radio Electronics from June 1966. The transistor is from the time. The...
This circuit generates two pulses per cycle of alternating voltage for full wave control. The...