This 6-transistor Japanese radio from the 1960s used germanium transistors and had an output power of 180 mW. The circuit is of the superheterodyne type with push-pull class B output.
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...