How to use a multimeter to measure the quality of one-way thyristor
How to measure the quality of one-way thyristor? The method of measuring the quality of one-way thyristor is as follows:
Select the R*1Ω gear of the multimeter, and then use the red and black test pens to measure the forward and reverse resistance between any two bows and feet until the opposite pin with a reading of tens of ohms is found. At this time, the pin of the black test lead is the control pole. G, the pin of the red test lead is the cathode K, and the other empty pin is the anode A. Then connect the black test lead to the judged anode A, the red test lead is still connected to the cathode K, and the pointer of the multimeter does not move at this time. Use a short wire to short-circuit the anode A and the control pole G in an instant. At this time, the electric blocking pointer of the multimeter should be deflected to the right, and the resistance reading is about 10 ohms.
For example, when the cathode A is connected to the black test lead and the cathode K is connected to the red meter, the pointer of the multimeter is deflected, which means that the one-way thyristor has been damaged.
