Recommended by 90s a Radio Electronics, this unit uses a transformer with a 70 V x 5 A secondary, being indicated for powering amplifiers from 50 to 100 W.
This low power audio amplifier was found at 1992s Popular Electronics. Transistors are general...
This circuit was found in the July 1990 Radio Electronics magazine. It is based on the 3-digit...
This circuit was found in a 1999 English magazine, but can be easily assembled with BC548...