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changing my VMeter from 0.25A to 25A

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

Reply to
Hadry LittleWood
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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

Reply to
Gene 

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Have a look at
http://homepage.ntlworld.com/g.knott/elect349.htm.htm
Reply to
Graham Knott 

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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
Reply to
Graham Knott

------------- Parallel shunt.

-Steve

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-Steve Walz  rstevew@armory.com   ftp://ftp.armory.com/pub/user/rstevew
Electronics Site!! 1000's of Files and Dirs!!  With Schematics Galore!!
http://www.armory.com/~rstevew or http://www.armory.com/~rstevew/Public
Reply to
R. Steve Walz

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