This circuit was found in a General Electric documentation from 1966. It uses discrete components of the time that can be replaced by modern equivalents.
Found in a 1995 Hands-On Electronics, this circuit generates a sinusoidal signal whose frequency...
This is the suggested transmitter circuit for the CB16880E. The emitting LED must be a...
This Japanese commercial radio with 5 transistors is from the 60s and is powered by 6 V. It is a...