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IIRC the description of the test circuit has an error: You may also like: MT2 label should be at the top and MT1 label at the bottom side with the gate. How to test dataaheet LDR. Please correct the diagram.

MT2 should be at the top and MT1 at the bottom, next to the gate Catasheet. The lamp must glow indicating the switching ON of triac. Trigger voltage in phase with MT2 at top to allow triac to operate in the first and third quadrants when AC is normally applied.

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How to test a triac. Please research this point and correct the fucking diagram, you retards, instead of wasting peoples time. Leave a Reply Cancel reply Your email address will not be published. The triac test circuit shown is incorrect and will not work as shown. I have test datashset circuit with a TICM triac. Previous post Next post. They are definately different.


Now press the push button switch S1. The lamp must not glow.

This is another approach for testing a triac. When you release the push button, you can see the lamp extinguishing. Circuit for testing a triac.

Almost all type of triacs can be tested using this circuit. Connect triac to the circuit as shown in circuit datasgeet and switch S2 ON. The multimeter will show a high resistance reading open circuit.

Dataseet the above tests are positive you can assume that the triac is healthy. MT1 and MT2 are labelled back to front. If the above tests are positive then we can assume that the triac is healthy. Wireless mains voltage tester. The multimeter will now show a low resistance reading indicating the switch ON.

Are these some other types of triacs, in behaviour or so, than the TIC ones? If wired that way it will m10,z47 correctly. The drive must go from MT2 to G. Eric, MT1 and MT2 have to be reversed, as you say. If the input is AC or pulsed DC, the lamp stays on while S1 is held closed, and then turns off at the next zero-crossing — i.

Yes now it is ok and working Mt2 and Mt1 must be reversed otherwise it is not working I was tried many times I would like to thanks all of you for the tips. But you cannot trigger the gate by connecting it to the same potential as MT1. Anyway this test is not applicable triacs that require high gate voltage and current for triggering.


Your email address will not be published. This circuit is nothing but a simple arrangement to demonstrate the elementary action of a triac. Thanks for your help! A multimeter can be used to test the health of a triac. Great step by step instruction. Thanks for pointing out. I agree with the previous comments.

Testing triac using a multimeter.

M10LZ47 Datasheet, M10LZ47 PDF, Pinouts, Circuit – Toshiba

Now put the selector switch to a low resistance mode, connect the MT1 and gate to positive datashfet and MT2 to negative lead. I just tested it on an actual part. First put the multimeter selector switch in a high resistance mode say Kthen connect the positive lead of multimeter to the MT1 terminal of triac and negative lead to the MT2 terminal of triac there is no problem if you reverse the connection.