<VV> voltmeter again

[JVHRoberts at aol.com]

Unlike analog meters (which means we are ALL showing our age!!), digital  
meters require an external power source to operate the A/D converter, logic and  
display. 
I have a couple of analog VOMs, but I most definitely prefer the auto  
ranging digital units. FAR harder to destroy, FAR harder to get out of  calibration, 
etc. 
 
In a message dated 8/11/2008 5:20:42 PM Eastern Daylight Time,  
latin81 at comcast.net writes:

Now, why  didn't I think of that?  It does seem that a voltmeter would not 
need  a battery to read voltage, and yet mine started working properly only  
after I replaced the battery.  I can't think of any other  explanation, but 
I'm open to suggestions.  I've never tried using  this digital meter without 
a battery, but as JVHRoberts suggests, maybe it  needs the battery for all 
functions.

John McMahon 


 



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