Hey guys, I recently installed a new stereo head-unit in my car. One of the challenges with installing this head-unit was that a certain wire from the harness needed to be grounded, but only after ...

Transistors are essentially little electronic switches; instead of using metal contacts they use silicone direct the flow of electrons. This is a typical transistor driver circuit for a DC lamp: ...

The first transistor computer was built in 1953 by the University of Manchester using 200 point-contact transistors, much in the style of earlier relay and vacuum-tube computers.

One solution is to use a Darlington transistor (Q1) to drive the relay. But during the de-energization phase, the relay contacts are held for a finite amount of time, due to the high β of the ...