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48 lines
945 B
Markdown
48 lines
945 B
Markdown
---
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tags:
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- electronics
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- notes
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author: TrudeEH
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draft: false
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showToc: true
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title: Transistors
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---
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Transistors are electronic components that behave like a `switch`, or `amplifier`.
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## Schematic
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```Plain
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.--.,-- Collector
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Base --(--|<)
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`--`'-- Emitter
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```
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## Examples
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### Switch
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If the `base` pin is provided with energy, the transistor allows current to flow in the main circuit.
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### Amplifier
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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
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### NPN
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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.
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> 
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### PNP
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A PNP transistor receives energy through the `emitter` pin, and then divides it to the remaining pins.
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