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Old 12-10-2008, 09:39 PM   #1
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continuity tester


should i buy one of these?

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Old 12-10-2008, 10:58 PM   #2
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continuity tester


What do you want to do with it once purchased?

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Old 12-11-2008, 06:53 AM   #3
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continuity tester


Most DMM's will perform simple continuity testing, and a lot of other things as well.
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Old 12-11-2008, 08:09 AM   #4
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continuity tester


i dont know what they do. i have a voltage detector, what can a ct do that a vt cant?
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Old 12-11-2008, 08:14 AM   #5
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Originally Posted by drewhart View Post
i dont know what they do. i have a voltage detector, what can a ct do that a vt cant?
It can test for continuity.
http://home.howstuffworks.com/continuity-tester.htm

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Old 12-11-2008, 09:25 AM   #6
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continuity tester


When testing for continuity, you must be sure the circuit is NOT powered.
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Old 12-11-2008, 12:09 PM   #7
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My favorite continuity tester is a home made one from radio shack.

9V battery, the thing a 9v battery clips into, with 2 leads, a small 9v piezo speaker and 2 alligator clips w/leads. Put it all together and tape the speaker to the battery with elec tape.

It is cheap, it has alligator clips and it is loud enough to hear from another room.

I usually make a batch for Christmas gifts. Thanks for reminding me.
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Old 12-11-2008, 12:14 PM   #8
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continuity tester


I think you mean piezo buzzer... if they try this with just a piezo speaker, nothing will happen.
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Old 12-11-2008, 12:20 PM   #9
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OK....piezo buzzer then...but it doen't buzz, it emits a high pitched tone. It's about 1" in diameter....the smaller, the better
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Old 12-11-2008, 12:54 PM   #10
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should i buy one of these?
For household use, it is 120v in series with an incand. lamp (or in series with a radio, for audible indication).
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Old 12-11-2008, 01:59 PM   #11
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You can buy a combination continuity tester and tone generator at Home Depot. They come with a probe for picking up the tone.

The tester has a 3 way switch. In one position it sends out a tone. Center is off and the 3rd position is for continuity.

The idea is to find a cable using the tone and probe, then verify it by checking its continuity!

Mine cost less than $30 and I've been using for years.
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Old 12-11-2008, 04:06 PM   #12
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