Re: Fried meter
- From: PhattyMo <phattymo@xxxxxxx>
- Date: Mon, 24 Nov 2008 16:30:50 -0800
A few years ago a friend gave ma a meter that got 'blown up'. I think someone tried to measure a 120Vac outlet with it set and connected in "amps" mode. The tips of the probes were gone,and one was missing a big piece out of the side.
I opened it up,and it had a hunk of heavy 'piano wire' looking stuff(approx 12awg?,solid) used as the current shunt. There *was* a little wire soldered about 1/4 way up the wire shunt,which had been completely nuked. I soldered a new wire on the PCB,and soldered the other end to the same place on the shunt where the old wire was. It worked perfectly fine! I still have that old beast. :)
Bob Shuman wrote:
Look for a very low ohm (~0.1 ohm) precision resistor that is used to determine the current by measuring the voltage across it..
Bob
"Claude Hopper" <boobooililililil@xxxxxxxxxxxxxx> wrote in message news:5--dnQTGJpkmsbbUnZ2dnUVZ_o7inZ2d@xxxxxxxxxxxxxxxI was using my little analog meter in dim light. I thought it was off so
set it to 250 volts and probed a 120v circuit. There was a flash and a
smell. Turns out I set it on 50ma DC instead of 250vac (opposite side of
switch). Well the voltage meter still works and the ohm meter still
works, I thought it blew a fuse but I guess that is just for ohms. So
what blew? Why no fuse? I can smell but can't see, must be on the back side.
--
Claude Hopper :)
? ? ¥
- References:
- Fried meter
- From: Claude Hopper
- Re: Fried meter
- From: Bob Shuman
- Fried meter
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