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 was found in Radio Electronics magazine from June 1961. The distance between stations is...
We found this circuit in a European publication from the 1970s. The transistors are made of...
This circuit is from a factory manual from the 80s. The circuit can be implemented with more...