This light effect circuit was found in the July 1971 Radio Electronics magazine. The circuit is powered by 110 V mains but can be modified depending on the triac and lamp.
This 1960s Japanese commercial AM radio uses 6 germanium transistors and is powered by 4...
This well-designed bistable circuit was found in a 1970s documentation. Transistors can be current...
This microamplifier was found in a Popular Electronics from June 1968. It is an experimental...