This circuit of dozens of watts uses germanium transistors and the critical components are transformers. The circuit is from the 1960 Mullard transistor application manual.
The purpose of this circuit is to provide a few watts of power to a heavy speaker with good sound...
This circuit, found in US documentation, can measure the power of transmitters up to 10 W, given...
This circuit was obtained in a 1975 documentation. It is intended for old vehicles that still use...