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 circuit shown in the figure is suggested by Intersil (www.intersil.com) and makes use of the...
This 1 MHz oscillator was found in the February 1992 issue of Radio Electronics magazine. The...
This circuit is from an old documentation. However, it can be designed based on modern transistors...
