This 1950s audio amplifier uses output tubes of type 1625 in its output stage. The Class B circuit provides a few watts of power and uses transformers that are not readily available today.
This circuit with the NE602 was found in the February 1997 Electronics Now magazine. The NE602...
We found this circuit in Radio Electronics magazine from September 1959. The circuit has different...
Found in a 90s Radio Electronics, this circuit uses an AD590 or AD592 for remote temperature...