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Practical Electronics/Bipolar Transistors/NPN Transistor/Transistor circuit
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
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Electronics switch
When , Transistor operates as Electronics switch
.
.
Electronics amplifier
When , Transistor operates as Electronics amplifier
.
Transistor's Rectifier
A PNP Transistor only allows half of a negative cycle of a voltage or signal wave to pass and grounds any positive cycle of a voltage or signal wave.