<VV> Question? Re: voltmeter problem solved

[JVHRoberts at aol.com]

Given that nearly ALL hand held voltmeters are digital, they need a battery  
for all functions. 
 
In a message dated 8/11/2008 3:32:12 PM Eastern Daylight Time,  
FrankCB at aol.com writes:


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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