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They are definately different. 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.
This is another approach for testing a triac. Your email address dataaheet not be published. The lamp must glow indicating the switching ON of triac. I agree with the previous comments. Anyway this test is not applicable triacs that require high gate voltage and current for triggering. Almost all type of triacs can be tested using this circuit. The lamp must datsaheet glow. You may also like: The multimeter will now show a low resistance reading indicating the switch ON.
Please correct the diagram. The triac test circuit shown is incorrect and will not work as shown. MT2 should be at the top and MT1 at the bottom, next to the gate G.
M10LZ47 pdf Datasheet P1 Part Num IC-ON-LINE
IIRC the description of the test circuit has an error: Thanks datasheer pointing out. Eric, MT1 and MT2 have to be reversed, as you say. Thanks for your help! When you release the push button, you can see the lamp extinguishing. MT1 and MT2 are labelled back to front. Now press the push button switch S1.
How to test an LDR. Yes now it is ok and working Mt2 and Mt1 must be reversed otherwise it is not working I datwsheet tried many times I would like to thanks all of you for the tips. 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.
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Trigger voltage in phase with MT2 at top to allow triac to operate in the first and third quadrants when AC is normally applied. If the above tests are positive you can assume that the triac is healthy.
Leave a Reply Cancel dqtasheet Your email address will not be published. Dtaasheet you cannot trigger the gate by connecting it to the same potential as MT1.
I just tested it on an actual part. If wired that way it will work correctly. Connect triac to the circuit as shown in circuit diagram and switch S2 ON. This circuit is nothing but a simple arrangement to demonstrate the elementary action of a triac.
Are these some other types of triacs, in behaviour or so, than the TIC ones? A multimeter can be used to test the health of a triac. I have test this circuit with a TICM triac.
If the above tests are positive then we can assume that the triac is healthy.