How to Check Transistor by digital multimeter -TESTING
Transistor Check
Step -1
Set Multimeter at Buzzer Range.
Step -2
Black probe touch with base terminal and red probe touch one by one with collector & emitter Multimeter are showing reading means transistor is ok condition.
Again touch red probe with base and black probe with one by one with collector and emitter than multimeter are showing no reading means value one means transistor is ok
Transistor is PNP
Step -3
Red probe touch with base terminal and Black probe touch one by one with collector & emitter Multimeter are showing reading means transistor is ok condition.
Again touch Black probe with base and Red probe with one by one with collector and emitter than multimeter are showing no reading means value one transistor is ok .
Transistor is NPN
Step -4
Touch one Probe
with Base and one probe with collector & emitter. Multimeter are showing value 1 means transistor is open
