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DIODES
Are the component that allows current flow in one direction and blocks current in opposed direction.
WHAT YOU NEED TO CARRY OUT THE TESTING
(1) 9V battery
(2) multimeter
A good diode will test as follows
Forward biased 9Volts shortcircuit
Forward biased 0Volts open-circuit
forward biased 9Volts - diode voltage good
Reverse biased 0Volts good
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