Posted by Arthur P. Bloom on Friday, August 10, 2007 at 16:23:41 :
In Reply to: Re: Amp meter is pegged? posted by David Sherman on Thursday, August 09, 2007 at 22:10:36 :
"since it would be hard to find a replacement ammeter that looked the same but had a higher full-scale rating"
You coul dvery easily make the ammeter have a higher capacity by changing or addidng to the shunt.
The indicated currect never goes through the meter windings, but rather most of it is shunted. Here is a simple formula that allows you to change the range (scale) of the meter.
http://www.woodsbas.demon.co.uk/calcs/shunts.htm
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