multimeter conversion

read

Yes. You need a "shunt".

This is in effect a low value resistor that goes between the terminals of the meter. In effect it shunts (diverts) some of the current "around" rather than through the meter. If you had a shunt that diverted 50% of the current it would read 0-1A.

How they work...

E = Imeter x Rmeter = Ishunt x Rshunt

Im = ( Is x Rs ) / Rm . . . Rs = Rm / ((Im+Is)/Im) - 1

"palito" escreveu na mensagem news:42b6f506$ snipped-for-privacy@ibixwebf.ibi.com...

read

To use a shunt: run the current through the shunt and measure the VOLTS across the shunt

the shunt must have very low resistance and the voltage reading will be very low -- millivolts or microvolts. You can calculate the current, or you can go to the trouble of labeling the meter movement with a scale to read directly in amps.

You need to get your hands on a shunt, which can be bought from supply houses on the internet.

Of course, it would be easier just to get a multimeter that includes an ammeter range that's high enough for the measurement you want to make. You can get multimeters with 10 amp range for less than 20 bucks.