This old 1 W audio amplifier transistor circuit is from a 1967 Japanese magazine. The transistors are germanium of the time and the type transformers found in similar equipment of the time.
This circuit, from 1988 documentation, allows the use of 15 to 60 W dimmed lamps without the need...
We found this game for two competitors in a Popular Electronics from the 80's. The circuit can be...
The time of this timer depends on C1. The circuit was found in the July 1994 Electronics Now...