Re: How many RV'ers have a .......

On Fri, 17 Apr 2009 23:57:46 +0100, "gazz"
<gazz@kampen~getlostspammers~wagen.co.uk> wrote:

erm, how will that stop the short (well, prolly 0.01 ohm resistance of the
shunt) you get from having the red lead plugged into the current reading
plug when you try to measure voltage?


Remember the old adage, nothing can be made foolproof, because fools
are so ingenious!

Most digital multimeters have automatic sensing.

http://upload.wikimedia.org/wikipedia/commons/a/a6/Digital_Multimeter_Aka.jpg

There is not much you can do. Even if the knob is set to mV instead of
V, the multimeter will not be harmed. it just won't read correctly.

But on those that have knobs and switches and such like (especially
old analog ones)

http://upload.wikimedia.org/wikipedia/commons/9/93/Analog_Multimeter.jpg

the safest thing to do is set the controls to the highest AC voltage.



Elliot Richmond
Itinerant astronomy teacher
.

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