RE: [SI-LIST] : Heating resistor: RMS or average current (was Re: Effect of low Zo for unterminated lines)

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From: Larry Miller (ldmiller@nortelnetworks.com)
Date: Wed Oct 27 1999 - 09:09:29 PDT


And, in a corollary fashion, using "average" amps or volts is also wrong.

nu?

Larry

At 02:40 PM 10/26/99 -0400, you wrote:
>>RMS IS the heating effect in terms of watts; good RMS meters use bolometers
>>to measure it with. "Average" is the wrong answer.
>
>Be careful here. The correct thing is RMS current, and Average power.
>
>I'm just trying to steer everyone away from thinking along the lines of "RMS
>power" (taking the square root of the mean average of the square of the
>instantaneous power) or RMS watts, which would be the wrong thing.
>
>Heating watts is a simple time-average of the instantaneous watts, or can be
>found using an RMS averaging of current and/or voltage.
>
>Andy
>
>
>
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