We found this circuit in the March 1984 issue of Radio Electronics magazine. The module used is a common type at the time. The other integrated circuits are common types.
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...