Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
- From: "Dave Plowman (News)" <dave@xxxxxxxxxxxxxxx>
- Date: Wed, 06 Apr 2005 16:42:14 +0100
In article <6wis3081fx.fsf@xxxxxxxxxxxxxxxxxx>,
Sam Goldwasser <sam@xxxxxxxxxxxxxxxxxx> wrote:
> > > You could, of course, simply use a parallel resistor to bring a DVM
> > > more into line with a needle type. Something like 240k ohms for 240
> > > volts.
> A typical needle type VOM has a resistance of 20,000 ohms/V.
Yup - that's common for a decent AVO on DC. But assuming no electronics,
1000 ohms/V AC is also common. Looking for the best pure non electronic
one I can find, this goes to 40,000 DC and 4,000 AC.
But for measuring home mains, 1000 ohms/V is fine. Stops those silly
readings caused by coupling of one sort or another.
--
*What was the best thing before sliced bread? *
Dave Plowman dave@xxxxxxxxxxxxxxx London SW
To e-mail, change noise into sound.
.
- References:
- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
- From: Sam Goldwasser
- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
- From: Dave Plowman (News)
- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
- From: Sam Goldwasser
- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
- From: James Sweet
- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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- Re: Do multimeters "wear out" after so many years? Fluke vs. Ideal, Wavetek??
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