Datasheet of This amplifier uses a pair of complementary transistors at the output and can provide 1 W of audio at a load of 3-ohm. Higher impedance speakers can be used. The circuit is from an English publication from 1986 and TR1 can be a | BC548. The supply can be done with voltages from 9 to 18 V. The trimpot adjusts the resting current, which must be in the order of 20 mA.
The transistors of this symmetrical source from an old publication can be replaced by modern...
The integrated circuit used in this project is not common today. It was found in a 2000...
This circuit for high power xenon lamps was found in the November 1974 issue of Radio Electronics...
