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Re: Wattmeters

Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Dmitry,

At 11:02 AM 7/25/2005, you wrote:

p.s.
Terry - could you do a simple analysis of a little circuit in MicroSim
for the comparsion of our programs?
scheme - http://cis.ru/~dest/s1.GIF
V2 - sine wave 50hz, amplitude 220v, internal resistance - 0.01 ohm.
all diodes - MURS320, a cap doesn`t have inductance & resistance.
spectrum of current (V2) - http://cis.ru/~dest/s2.GIF

If the voltage is 220VAC then the amplitude is really 220 x SQRT(2) so I think you need to put in 311 volts for the voltage source so the RMS value is 220.

I used 1N4007 diodes since that is what the free program has.

But I did it with the same voltage you did. You can just multiply the numbers by SQRT(2)...

Here is the schematic:

http://hot-streamer.com/temp/Dmitry-001.gif

The voltage and current:

http://hot-streamer.com/temp/Dmitry-002.gif
http://hot-streamer.com/temp/Dmitry-003.gif

I only get about 30 amps peak.

Here is the spectrum over 1 second to get good resolution:

http://hot-streamer.com/temp/Dmitry-004.gif

Cheers,

        Terry