PNP bipolar junction transistor (BJT) switch circuits use a weak signal to control a load that needs more power.

A transistor switch is “on” when it is saturated, and “off” when it is cutoff. This happens in the same way as the NPN bipolar junction transistor except polarities are reversed.

Brief PNP BJT switch circuit – Bipolar Junction Transistor

More topics:

Diagram

PNP switch YouTube video

Diagram is below the video. Using the link opens the video in a new tab!

Electronics course 9 PNP Bipolar Junction Transistor BJT switch plus capacitor fade off



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Kit that has everything you need to learn basic electronics and Arduino.





A lot of the components that I use are in this diode and transistor semiconductor kit.

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