For the past 100 years coilers have been using voltmeters and ammeters to
measure the input watts to the Tesla coil. There is a lot of this info
available and the accuracy varies but probably averages about +/- 10%. Or
you can wait another 100 years for info to accumulate using electronic
wattmeters with a speculative +/- 1%.
At 10:14 PM 1/23/99 -0700, you wrote:
>Original Poster: "Steve Young" <youngs-at-konnections-dot-com>
>Recently, someone asked about the feasibility of using a watt-hour meter as
>a means of measuring wattage, but noone responded. Suppose one uses a
>watt-hour meter of the type that is commonly used to bill us for our home
>power useage. If one monitors just the TC HV transformer (pig, nst, pt)
>for a precise time such as 60 or 100 seconds, will one get a fairly
>accurate indication of average power? Does mechanical inertia, etc. take
>care of the erratic waveforms it must handle? I like the almost
>indestructable character of watt-hour meters--they seem to live forever.
>> An electronic
>> Wattmeter must take scaled samples of the voltage and the current in the
>> load, multiply them, average the result, and take the square root.
>> Any other approach will not work correctly with arbitrary waveforms.
>> Antonio Carlos M. de Queiroz