On Friday 15 February 2008 08:15, Carlos E. R. wrote:
The Thursday 2008-02-14 at 12:06 -0500, Aaron Kulkis wrote:
I'm using one of these:
http://www.order.conrad.com/xl/1000_1999/1200/1250/1253/125319_AB_05_FB. EPS.jpg
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...
-- Cheers, Carlos E. R. There are electronic true-RMS voltmeters with analog readouts. For example, the Balantine 323 has a nice big dial. You would have to measure the voltage drop across a known value shunt resistor in series with the load, and calculate the power from voltage and current. --doug, wa2say
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