This circuit uses pulsed current to check transistor hFE on an oscilloscope. The circuit creates the biasing conditions specified by the transistor’s manufacturer.

The circuit acts like an efficient diode. With Enable low, the hot-swappable side has no effect on the signal, with or without power applied. The two-transistor circuit offers the additional benefit ...

Although economical, the transistor’s threshold varies excessively over temperature; hence, the protection level is unstable. The circuit in essentially eliminates the base-emitter-voltage temperature ...

[Kevin Darrah] wanted to make a simple 3.3V regulator without using an integrated circuit. He wound up using two common NPN transistors and 4 1K resistors. The circuit isn’t going to beat out… ...

It turns out the transistor tester is an open source hardware project (translated) originally created by [Markus Frejek], and built upon by [Karl-Heinz K ubbeler] and a number of others.

This automatic battery-charger, built around a single transistor, starts charging when the battery voltage drops beyond a preset value and stops when once an upper preset voltage is reached.

Explains the principles of transistor switching circuits, highlighting their role in electronic computers. It contrasts transistors with vacuum tubes, emphasizing that transistors function as ...