power measurement - RF Cafe Forums

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controlman
Post subject: power measurement
Unread postPosted: Sat May 08, 2004 4:05 am
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Lieutenant

Joined: Fri May 07, 2004 6:22 am
Posts: 2
Location: UK
Hi everyone!
I found your notes on the internet very
useful. I was wondering if I may ask a small
question regarding the calculation of real
power dissipation from a simple R & L
components circuit connected in series and
powered by a an AC square wave. The
measurements I have is:

Power supply DC Voltage :V_dc
Power supply DC current :I_dc
RMS current through the circuit :I_rms

I simply wanted to know, why is the "real power " equal to V_dc*I_dc and
not V_dc*I_rms?

Thank you very much for your time and guidance.

Cheers!

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I am regreted
Post subject:
Unread postPosted: Thu Jun 17, 2004 11:22 am

A good question. I can't reply, but I am considering to give a try.

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guest
Post subject:
Unread postPosted: Wed Jun 30, 2004 8:08 pm

the thing is why would you say the circuit is powered by an AC square wave when you are using a DC power supply?

Posted 11/12/2012