-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Friday 2008-02-15 at 16:07 +0100, Per Jessen wrote:
I would look for a device with a needle rather than a digital readout.
I don't think you can measure true rms with a coil and needle. :-? It was measured by thermal effects...
Carlos, Aaron only said "readout", which is unrelated to how it is measured. The advantage of an analog readout over a digital is that it is possible for a human to see spikes/changes more clearly.
I know that. I've always liked analog multimeters for that reason. But I don't think you can get a needle movement with rms voltage measurement. And the amp meter "tweezers" I have used did certainly work badly with triac controlled motors and PC power supplies. So allow me some doubt that a needle thing could measure ac power properly nowdays. Your gadget is probably using a new chip that made the market probably recently designed for the purpose of power measurement with complex waveform. I wonder if power distributors are thinking on using such chips on house meters instead of the mechanic meters they use now. - -- Cheers, Carlos E. R. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4-svn0 (GNU/Linux) iD8DBQFHtfXYtTMYHG2NR9URAodVAKCAqKhysTYty/Fqmzo3EwE/npzYgQCfSOIJ ulHlPozWRBOjDUJ0N+8CdKc= =HMTc -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org