On Sun, 21 Oct 2001 21:56:52 -0700, "wolfcreek1" <[email protected]>
wrote:
>
>My DMM says my 27 volt (3-9 volt batteries) are putting out 28 volts. But
>when I put the positive red lead to the positive battery terminal and the
>black negative lead to the brew cell terminal I get a 0 reading when set on
>the 20 ma setting. HELP!
If you actually did what you say you did, you've shorted out your batteries and
will need new ones.
When you measure voltage, you place your MM leads on both sides of what you want
to measure the voltage across. This is a parallel connection.
You've done this correctly!
Current is measured in series and some load must be in the circuit to limit the
current. That's the water!
When you measure current (that's the milliamps) you must break the circuit
between one battery terminal,connect one terminal of the multimeter, then
connect the other terminal of the MM to the silver wire.
So The leg to one silver element will be:
Battery terminal-> MMterminal->other MMterminal ->silver wire ->water.
The other leg will be: Other battery terminal ->other silver wire -> water.
As an aside, if this were an analog multimeter instead of a digital, it most
probably would have destroyed the meter.
Chuck
Spending a year dead for tax purposes !
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