--- Tony Moody <[email protected]> wrote: > Here is a picture of how to connect a multimeter. > Set it according o the > instructions so that you can read milliamps (mA) > Tony > > Acmeair wrote: > > jeff, i use the same meter on my setup. i put > alligator clips on the + and - > > leads. clip the positive lead from the power > supply to the positive lead of > > the multimeter. with a loose alligator clip, > attach the negative (black) > > lead of the multimeter to the positive silver > wire. attach the negative lead > > from power supply to the negative silver wire. > turn on the power, on the > > multimeter rotate selector to DCV,, 20 to measure > your power output, up to > > 20 volts. if you are running 27 volts, use the 200 > position. > > > > to measure how much current you are using, select > DCA,, 20m. this gives > > the current thru the system, in millamps. Not to sound silly here, but the current connections to the system are different than the connections for measuring voltage. If one merely turns the dial to read ma, without breaking the the former voltage connections, so that now you mave the meter in series with the amperage on the load in series , then what you are measuring is a short of amperage through the meter itself. In fact no current would then go through the solution, it takes the path of least resistance, which is the internal resistance of the meter itself, according to the range you are using. This wouldnt hurt anything with just the meager supply that a battery can give, but for a non limited current supply you will blow your fuses more then likely. One reads voltage across the voltage source, but one reads amperage in series with the current. Fundamental meter stuff. HDN
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