This simple circuit for headphones or small speakers was found in documentation from the 90s. The circuit works with voltages from 5 to 9 V and has good gain.
April 2017 - Already obtained at Mouser Electronicsthe new Molex miniDImm sockets according to...
Lamps in the range between 20 and 50 mA can be used. Voltage supply is according the lamp and...
We found this circuit in the May 1989 issue of Radio Electronics magazine. The circuit uses...