Quote:
Originally Posted by G4WYZ MikeyP
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Just a point worth reiterating, which isn't always made clear in the description of digital panel meters, (whether measuring Voltage or Current), is that the supply which powers the meter must not share a common ground with the circuit being measured. At the link above it does mention that requirement in the description, but not, for example, with the 500V DC one here:
http://vi.vipr.ebaydesc.com/ws/eBayI...1&secureDesc=0
I've no personal experience of the Sussex but discovered this requirement when I built the Capacitor Reformer which initially featured in Radio Bygones, and later in the BVWS Bulletin, the circuit of which had an error showing a common ground. I've mentioned this before but it might be worth reiterating.
Hopefully, when the meters arrive they do have a datasheet, but if anyone is unclear, I've attached a copy of the sheet which came with my meter, and others that I've bought since.
What a wonderful project this has turned out to be, with many stunning examples of completed testers, (many more yet to be finished!), and such commitment by so many forum members in developing the original design.