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Newbie's and Multi Meters

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Old 10-29-2006, 06:14 PM
  #11  
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Ya sorry you got me. I meant resistance. duh i'll be alright.
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Old 10-29-2006, 06:52 PM
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Sorry, but im curious now. How can you use a multimeter wrong?
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Old 10-29-2006, 06:59 PM
  #13  
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When testing amperage and putting the leads in series with the source and not having it set on the right selection may overload it and it could explode.
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Old 10-29-2006, 07:27 PM
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actually, that would just blow the internal protection fuse (done it before) but if you were to test voltage with it in the amps scale, it presents a dead short to your voltage source, it'd basically be like putting a piece of wire across the source, at 600 volts, things explode and people die. at 12 volts, with a battery, you can fry your meter and it could explode as well.
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Old 10-29-2006, 07:34 PM
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That would be bad.
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Old 10-30-2006, 11:42 PM
  #16  
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ah, multimeters, such a deadly little toy.

i was working on power for my laser, checking resistance in the connections and my boss decided to unplug the test lead from the ohms plug-in and put it in the voltage plug-in.
i hadnt noticed the change and touched the wires.

i tell you, i havent my pants since i was about 5, but that day was very close.
450 volts can be spoooky.
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Old 10-31-2006, 01:01 AM
  #17  
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in a car environment, I don't see the huge danger, well anymore than doing anything else on the car that you aren't capable of doing yourself...

A brake job gone bad, could land you sailing off a cliff too, but it all comes down to knowing how to use the tools you have, and what the effecs are of misusing them.. I think anyone interested in educating themselves in the proper way to use the tools, and most 'accidents' are avoided.

Mark
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Old 10-31-2006, 05:05 AM
  #18  
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fyi its not hard to measure impedance with a DMM

all you need is a reference resistor and some test tones/amp
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Old 10-31-2006, 09:50 AM
  #19  
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that's not impedance, that's resistance, using a resistor, it's resistance. impedance is the total circuit impedance caused by the inductance of the coil, added vecotorally with the resistance of the wire
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Old 10-31-2006, 03:52 PM
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Originally Posted by Sassmaster
that's not impedance, that's resistance


have you ever heard of a wheatstone bridge ?

trust me its not hard to setup...

Last edited by Haunz; 10-31-2006 at 03:58 PM.
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