This simple transistor tester was found in a Japanese magazine in 1967. It tests general purpose transistors of both the NPN and PNP type and is powered by 4 batteries (6 V).
This circuit was found in old documentation and can be implemented with other operational...
This circuit was found in the December 1984 issue of Radio Electronics magazine. The circuit has a...
This Testa o Croce (name in Italian) was obtained from an Italian magazine in 1994. The circuit can...