Hello,
Have a TRIAC, ID: BTA12. Here is the URL for the datasheet:
http://www.datasheetcatalog.com/data...A12-600C.shtml
The package is a TO-220AB Insulated, in other words it is packaged the same way as most HOTs. The only difference between HOTs and TRIACS is that , leg 1 from the left is Anode 1, leg 2, the middle leg is Anode 2, and leg 3 is the Gate.
On connecting a digital multimeter regardless of polarity between Anode 1 and Gate, the resistance is ~45 Ohms.
There is no reading between Anode 2 and Gate, infinite resistance, regardless of polarity.
Also, no reading between Anode 1 and Anode 2 regardless of polarity.
Now, if either positive or negative polarity is applied to Anode 1 and Anode 2 and the Gate is shorted to Anode 2, the multimeter reads ~45 Ohms.
Upon disconnecting the Gate from Anode 2, again the reading becomes infinite while the leads of the multimeter are in contact with Anode 1 and Anode 2.
The question is:
Should the reading continue to be ~45 Ohms after disconnecting the Gate from Anode 2, at least this what the theory tells me on testing Triacs, ( the resistance should continue , in this case, to be ~45 Ohms, provided the multimeter leads are in contact the Anode 1 and Anode 2) or
is the Triac faulty? and the reasons why.
Sincerely
Have a TRIAC, ID: BTA12. Here is the URL for the datasheet:
http://www.datasheetcatalog.com/data...A12-600C.shtml
The package is a TO-220AB Insulated, in other words it is packaged the same way as most HOTs. The only difference between HOTs and TRIACS is that , leg 1 from the left is Anode 1, leg 2, the middle leg is Anode 2, and leg 3 is the Gate.
On connecting a digital multimeter regardless of polarity between Anode 1 and Gate, the resistance is ~45 Ohms.
There is no reading between Anode 2 and Gate, infinite resistance, regardless of polarity.
Also, no reading between Anode 1 and Anode 2 regardless of polarity.
Now, if either positive or negative polarity is applied to Anode 1 and Anode 2 and the Gate is shorted to Anode 2, the multimeter reads ~45 Ohms.
Upon disconnecting the Gate from Anode 2, again the reading becomes infinite while the leads of the multimeter are in contact with Anode 1 and Anode 2.
The question is:
Should the reading continue to be ~45 Ohms after disconnecting the Gate from Anode 2, at least this what the theory tells me on testing Triacs, ( the resistance should continue , in this case, to be ~45 Ohms, provided the multimeter leads are in contact the Anode 1 and Anode 2) or
is the Triac faulty? and the reasons why.
Sincerely
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