<VV> Question? Re: voltmeter problem solved

[Ron]

Same question here.  I thought the battery was only used for measuring ohms.
RonH

----- Original Message ----- 
From: <FrankCB at aol.com>
To: <latin81 at comcast.net>; <virtualvairs at corvair.org>
Sent: Monday, August 11, 2008 12:31 PM
Subject: <VV> Question? Re: voltmeter problem solved


>
> Guys,
>    Why does a voltmeter need a battery in the meter  case in order to
> measure external voltage???  Measuring resistance does  need an internal 
> battery,
> but what function does the same battery serve in  measuring an external 
> VOLTAGE?
>    Frank "old, but still trying to learn"  Burkhard
>
> In a message dated 8/11/2008 2:50:26 PM Eastern Daylight Time,
> latin81 at comcast.net writes:
>
> Thanks  to whoever suggested that the battery in my voltmeter might be 
> low,
> and  that that could be the reason that I was getting weird readings when 
> I
> tried to measure my battery voltage with the motor running.   Bingo!  Down
> around 8 volts.  A new battery solved the  problem.
>
> Thanks again!
>
> John McMahon
>
>
>
>
>
>
>
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