Gadget to measure PC power consumption - Page 2

cerberos · 9th December 2002, 7:42 PM

theres two concepts isn't there, theres the correction factor when you do a quick RMS (averaging) and assume its a sin wave, and then theres the phaze shift.

Symon · 10th December 2002, 12:07 AM

No, it's to do with the definition of power factor. The definition that Mr Gibson gives is close, but I have refined it to:

Power factor is the ratio of REAL power to APPARENT power

Or put even more simply, the power factor is an indication of how much of the current component is actually contributing to powering the load. (ie. the magnitude of the current component on the real axis)

Depending on your application, there are several different convenient ways of working this out.

I think this link is has a much better (and realistic) explaination.

Here

Non-linear loads is becoming a major headache for the power industry, I might start up a thread to discuss it.

9th December 2002, 7:42 PM	#16
cerberos Member Join Date: Jun 2001 Location: melboure NE Posts: 1,765	theres two concepts isn't there, theres the correction factor when you do a quick RMS (averaging) and assume its a sin wave, and then theres the phaze shift. __________________ May all your multipliers stay unlocked

10th December 2002, 12:07 AM	#17
Symon (Plugging your Socket) Join Date: Apr 2002 Location: Brisbane QLD Posts: 2,824	No, it's to do with the definition of power factor. The definition that Mr Gibson gives is close, but I have refined it to: Power factor is the ratio of REAL power to APPARENT power Or put even more simply, the power factor is an indication of how much of the current component is actually contributing to powering the load. (ie. the magnitude of the current component on the real axis) Depending on your application, there are several different convenient ways of working this out. I think this link is has a much better (and realistic) explaination. Here Non-linear loads is becoming a major headache for the power industry, I might start up a thread to discuss it. __________________ DISCLAIMER - The mindless babble of this post does not constitute professional advice. I will not be held responsible if you choose to act on this advice. Unless I tell you to eat jellybeans, everyone likes jellybeans OCAU's self-appointed electrical safety expert - Founder of the bakasan Technical College - enrollments welcome. -- My Web Server in a Box