Badcaps.net Forum
Go Back   Badcaps Forums > Electronics Theory and Troubleshooting > General Electronics Technical Discussion
Register FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 06-04-2006, 01:24 AM   #1
repairs online
New Member
 
Join Date: May 2006
Posts: 14
Default TRIAC BTA12 - Your thoughts, Please!!!

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
repairs online is offline   Reply With Quote
Old 06-04-2006, 06:25 AM   #2
kc8adu
Super Moderator
 
kc8adu's Avatar
 
Join Date: Nov 2003
City & State: dayton ohio
Posts: 7,373
Default Re: TRIAC BTA12 - Your thoughts, Please!!!

http://www.repairfaq.org/sam/semitest.htm
kc8adu is offline   Reply With Quote
Old 06-04-2006, 10:31 PM   #3
repairs online
New Member
 
Join Date: May 2006
Posts: 14
Default Re: TRIAC BTA12 - Your thoughts, Please!!!

Hello kc8adu,

Have a read at this article: http://www.datasheetcatalog.com/data...A12-600C.shtml

and compare the info with respect to the info given on testing Triacs in the URL you provided.


Sincerely
repairs online is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 01:46 AM.


Badcaps.net Technical Forums 2003 - 2014
Powered by vBulletin ®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

Did you find this forum helpful?