This post describes a circuit that has a capacitive input sensor and a switching transistor at the output PNP. When…

The Darlington Transistor configuration of two bipolar transistors offers increased current switching for a given base current. The Darlington Transistor…

Transistor switches can be used to switch a low voltage DC device (e.g. LED’s) ON or OFF by using a…

The PNP Transistor is the exact opposite to the NPN Transistor device we looked at in the previous tutorial. Basically,…

NPN Transistors are three-terminal, three-layer devices that can function as either amplifiers or electronic switches. In the previous tutorial we…

The Bipolar Junction Transistor is a semiconductor device which can be used for switching or amplification. In the diode tutorials,…