What is Transistor? Testing, Types and uses
A transistor is a semiconductor device used to amplify, switching, oscillator, as switch, voltage regulate, and DC to AC electronic signals and electrical power.
It has three terminals Collector (C) Emitter (E) and Base (B). it is denoted by ‘Q’ and comes in number.
Symbol and shape
Find out collector, emitter and base
MM set on beep mode
More value: Emitter
Less Value: Collector
NOTE: NPN TRANSISTOR IS APPOSITE CHECKING OF PNP TRANSISTOR.
Find out NPN and PNP
Which probe put on base, if Black means PNP, if Red means NPN
OK: above testing is ok testing
Faulty: there are three conditions
Open: nothing show value of all terminals
Leakage: all terminals show value