Carlos E. R. wrote:
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.
Agilent/HP definitely does or used to do RMS meters with analog readout.
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.
Uh, I don't know which chips they use, but our mechanical meters were replaced with fully electronic ones about 4 years ago. See Landis+Gyr ZMB120. The news ones have both remote readout as well as LCD and infrared local readout. The picture on this page is very similar: http://landisgyr.ch/de/pub/produkte_und_loesungen/elektrizitaet/haushalt/zmd... /Per Jessen, Zürich -- http://www.spamchek.com/ - your spam is our business. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org