How to test the thyresitor or SCR by multmeter?
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Answer Posted / alan jenkins
Peak Electronics make a handy Thyristor and Triac tester
it has 3 leads with croc clips you dont even have to connect it a certain way.. it will analyse and display which colour lead is connected to what terminal eg Red lead = Cathode, Blue lead = anode, Green lead = gate and it will also tell you if the Thyristor/Triac is working correctly.
Usually when triacs/thyristors fail, they fail short circuit
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