Re: Amp Meter
From: Jamie (jamie_5_not_valid_after_5_Please_at_charter.net)
Date: 02/18/05
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Date: Fri, 18 Feb 2005 14:16:53 -0800
Nikki wrote:
> Guys thanks for all your replies
> I took the suggestion of Rich and found that with a 1.5volt battery and a
> resistance of 10400 ohms I can get the meter to read at its last increment.
> The meter is marked in increments of 10 up to 60 how would I get a 2 amp
> draw to read 20 where a 6 amp draw would be the last increment on the meter
> Thanks
> Nikki
that looks to be a 150 uA meter at full scale.
if memory serves,.i think you said the meter was a 0.050 mv?
to get a 6 amp scale.
6.00 - .000150 = 5.999850
Shunt = 0.050 / 5.999850 = 0.0083 ohms
i think that is correct,i normally measure the
coil R and use the I (current) to do all of this
how ever, this should still work.
this is just off the top of my head, i am sure some
one will correct me.
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