A teacher I know is stuck, with only npn transistors in the supply cupboard and the need to create a reversible motor drive for an Arduino project. Reversing ‘bridges’ have four switches (relay ...

Manufacturing companies, particularly those that mass-produce electronic circuits, work pretty much around bipolar junction transistors, like PNP and NPN. However, choosing between these two BJTs ...

By using dual bipolar devices in one case, the manufacturer nearly perfectly matches the two devices. Although this Design Idea describes a positive power supply, you can realize a similar ...

Question This transistor switching circuit uses an npn transistor, a voltage divider (consisting of a 5 k Ω resistor and thermistor) and a 5 V power supply.

The heart of this design is a currentmirror using modern dual transistors.Process improvements have made manyordinary dual transistors inherentlywell-matched. Testing a statisticallysignificant sample ...