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Subject: Re: SCR testing

Date: 07/14/02 at 2:44 PM
Posted by: Dennis Jumps
E-mail: d_jumps@yahoo.com
Message Posted:

In Reply to: Re: SCR testing posted by marv marcelino on 05/23/02 at 1:51 AM:

I use a 9 volt battery and a lamp to test the SCR.

There are a number of modes of failure that you can test for.

1-Shorted SCR
2-Leaky SCR (insulation breakdown)
3-Shorted Gate
4-Open Gate
5-Non Latching

Some of these test require an Ohmmeter.

What type of SCR are you testing ?

1-Stud Mounted SCR
2-Disk or hockey puck

For the best results, the SCR should be removed from the unit and bench tested.


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