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resister size question | 14 comments (14 topical, editorial)
Re: resister size question (3.00 / 0) (#12)
by Flux on Wed Sep 10th, 2008 at 10:39:02 AM MST
(User Info)

As the others have said, you can power it from a 12v battery as long as you intend to use it to measure things isolated from that battery. If you attempt any connection to the powering battery you will be in trouble.

A series dropper resistor may work if the meter current doesn't change with reading or load. otherwise a resistor /Zener arrangement or a true regulator will be needed. It may actually survive 12v but don't take my word for it.

Flux

[ Parent ]



resister size question | 14 comments (14 topical, 0 editorial)

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