This circuit was found in a 1967 US documentation. The FET is general purpose and the 6V zener. The circuit has a very fast switching action.
Mouser Electronics is making available the SLN-IOT-GPT Integrated Development Experience, a...
This is a bridge for the measurement of low value resistances and high values too. The circuit...
This 10, 25, 45 second and 5 minute timer has its times selected by the switches. The circuit...