This continuity tester for low resistances was found in an English magazine from 1978. The circuit can still be assembled if we use BC548 transistors for NPN and BC558 for PNP. The diodes can also be 1N4002.
This continuity tester for low resistances was found in an English magazine from 1978. The circuit can still be assembled if we use BC548 transistors for NPN and BC558 for PNP. The diodes can also be 1N4002.
