Date   : Sun, 12 Mar 2006 15:15:39 +0000
From   : jgh@... (Jonathan Graham Harston)
Subject: Re: Them pesky case stickers (was 1MHZ SCSI/ATA board.)

Message-ID: <10603110053.ZM4578@...>
 
Pete Turnbull <pete@...> wrote:
> the rotating disk.  You can also use a clamp meter, a device with a
> ring-shaped clam on the end instead of cables.  It uses magnetic fields
> to measure the current, usually via a Hall effect sensor.  Many are
 
I'm sure they work by transformer effect. The power cable is a
single loop primary, and the ring clamp forms the secondary.
 
-- 
J.G.Harston - jgh@...                - mdfs.net/User/JGH
Sheffield Boundary Review at http://mdfs.net/User/JGH/Docs/Politics/ParlReview