Mark
I've been using a DC clamp on at work since 1993, I've used it in DC rectified
(power supply) as well as pure DC (battery driven) circuits with good accuracy
as
compared to the shunt method you are mentioning. The clamp is a Tektronix Model
A622. We also have a HP DC ammeter that uses a clamp on probe that has been
around since at least the early 70's. It uses tubes so it's pretty old.
MarkNoakes@aol.com wrote:
> In a message dated 12/22/99 1:46:25 PM, you wrote:
>
> <<or measure the amps. Someone mentioned clamp on ammeter, I thought these
> only worked with AC. If there are some that work with DC, let me know. I
> would like to get one.>>
>
> Correct, clamp-ons only work with AC. The general approach with DC is to
> measure voltage drop across a precisely measured/known very low resistance in
> series with the circuit to be measured.
>
> Mark Noakes
> 58/56 Suburban
> Knoxville, TN
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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Bill Bailey
57 Chevrolet 3100 - Certified Y2K compliant
http://members.tripod.com/~oltruck/
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