This stereo circuit is from Japanese 1960 documentation. The circuit was originally designed to work with a tube amplifier, removing power from it. The transistors are germanium.
This 5-transistor receiver for the medium wave range was described in an article in Radio...
This circuit was originally designed to maintain the temperature of a brooder at 41º C. However,...
This circuit is from old documentation but uses components still common in our market. The circuit...