web/content/notes/ready/transistors/index.md

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title	description	date	draft	tags	author	showToc
Transistors		2025-02-17T08:14:53+00:00	false	electronics	TrudeEH	true

Transistors are electronic components that behave like a switch, or amplifier.

Schematic

        .--.,-- Collector
Base --(--|<)
        `--`'-- Emitter

Examples

Switch

If the base pin is provided with energy, the transistor allows current to flow in the main circuit.
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Amplifier

Altering the voltage given to the base pin allows us to control a larger voltage in the main circuit.
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Types of Transistor

NPN

An NPN transistor combines the base pin and collector pin.
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Note: Even if the collector pin is disconnected from the circuit, a small amount of current still passes through. !

PNP

A PNP transistor receives energy through the emitter pin, and then divides it to the remaining pins.

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