This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
This simple MW radio circuit with two transistors was obtained in an Argentine publication from...
This dimmer for incandescent lamps using triac and an LF7237 IC was found in May 1985 Radio...
The purpose of this 2002 circuit is to monitor the functioning of ordinary incandescent lamps. These...