This circuit was found in documentation from the 1980s. Transistors are general-purpose types like the BC548 for NPN and the BC558 for PNP.
This experimental amplifier was found in the 1960 Mullard transistor reference manual. The...
With this simple tester you can measure the gain of an NPN or PNP transistor. The instrument can...
This old slide projector control circuit was found in an 80s Hands On. The circuit uses modern...