Re: [CAD_CAM_EDM_DRO] panel meters

In a message dated 3/9/2004 12:31:18 PM Mountain Standard Time,
JanRwl@... writes:
Connect the meter
across the 1 000 ohm resistor. The voltage displayed will be 1/1000 the
input, i.e. 200V in will put 200mV across the meter.
Excuse me, in parallel they will have the same voltage. I think you meant in
series
.
In a meter circuit for measuring voltage the resistor in series drops the
voltage the meter sees. and is usually a fairly "large" value.
For measuring current a resistor "shunt" is placed in parallel with the
meter, and is usually a very small value. Sometimes in the shape of a flat piece
of metal, or heavy wire. Trim away metal from the sides until the meter is
calibrated
bill


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