This circuit was found in a 1969 Mullard publication. The transistor may be the modern equivalent of BC548. Observe the relatively high supply voltage.
This audio circuit has an output power of 1 W. We found it in the Radio Electronics magazine of...
September 2016 - It can be obtained from Mouser Electronics the new voltage regulators (LDOs) to...
This circuit is suggested by National Semiconductor in its Linear Applications Handbook. The...