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.
This circuit is more elaborate than the previous one. It was obtained from an 80s circuit manual. The...
Found in American documentation from the 90s, this circuit can be used as a shield with the...
We find this circuit in a 1980s documentation for amateur radio. The circuit shows how to switch...