hi
I have a volt meter which can reads DC current up to 0.250A How do I make it able to read up to 25A
maybe just adding some resistors?
thanks
jif
changing my VMeter from 0.25A to 25A
Sep 08, 2004
4 Replies
Use a shunt resistor in series with the circuit, then measure the voltage across the shunt and by applying Ohm's law you have the current. (for example 0.01 ohm shunt would give you 0.25V @ 25A) Gene
Have a look at
http://homepage.ntlworld.com/g.knott/elect349.htm.htm
Sorry, but for some reason there are two htm's. Just delete onre as shown.
My most up-to-date website
Electronics for Beginners & Intermediate Electronics
http://homepage.ntlworld.com/g.knott/elect349.htm
------------- Parallel shunt.
-Steve
-Steve Walz rstevew@armory.com ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!! With Schematics Galore!!
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