Found in a 1967 American documentation, this circuit produces a pulse with a delay that depends on the components used. The operational is from the time.
This circuit is from a publication from the 50's. Inductive components are critical, and...
This simple two-transistor circuit used transistors from the 60s, having been found in a...
This circuit uses an oscillator that generates a signal of approximately 1450 kHz to test...