What is Transistor and it's type and how to check and identify

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A transistor is a semiconductor device used to amplify or switch electronic signals. There are two main types: bipolar junction transistors (BJTs) and field-effect transistors (FETs).

Transistors are used in electronic devices to amplify or switch signals.
BJTs have three layers of semiconductor material (NPN or PNP) while FETs have a gate, source, and drain.
To check a transistor, you can use a multimeter in diode mode to measure the voltage drop across the base-emitter junction.
You can also use a transistor tester to identify the type of transistor and check its parameters.
Common transistor packages include TO-92, TO-220, and SOT-23.

What is Transistor and it's type and how to check and identify

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