<VV> Question? Re: voltmeter problem solved

[Dave Keillor]

Lighting the digital display?

    Dave "analog is better than digital" Keillor
 
-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of FrankCB at aol.com
Sent: Monday, August 11, 2008 2:32 PM
To: latin81 at comcast.net; virtualvairs at corvair.org
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