Buy the ARP T-Shirt! BIOS Optimization Guide Money Savers!
 
 28 February 2004
 N/A
  N/A
 Guides
 Dr. Adrian Wong
 1.0
 Discuss here !
 58232
 
   
Unboxing The ASUS ZenFone 2 Smartphone
ASUS Malaysia kindly gave us the premium ZE551ML version of the ASUS ZenFone 2. Let's... Read here
Desktop CPU Comparison Guide Rev. 15.9
There are so many CPU models that it has become quite impossible to keep up with the ... Read here
   
Buy The BOG Book Subscribe To The BOG! Latest Money Savers!
Power Factor Correction : Correction Required
Digg! Reddit!Add to Reddit | Bookmark this article:

Power Factor Correction : Correction Required!

Power Factor Correction or PFC is the latest buzzword to be thrown around by power supply companies. Something they are making quite a lot of fuss about. And why not? There are very few features that differentiate one power supply from another.

Now, a lot has been said about PFC. Unfortunately, many of the explanations are either confusing or misleading. That's why we thought we would take a shot at clearing up the confusion.

 

What Is PFC?

First, let's take a look at what some manufacturers are saying about PFC. Here is a quote from Zalman :-

"In a conventional power supply with switching regulators, a rectifying circuit that converts an AC input source into a DC source for the primary circuit is used. In this rectifying circuit, a capacitor with a large capacitance is used to soften transient response and reduce ripple so that the switching regulator is not over-stressed.

However, the peak charge of the capacitor becomes greater with greater capacitance, and this leads to non-linear bursts of peak over-current into the primary circuit. Such peaks of current distort output voltage, create harmonic frequencies, and reduce power factor.

There is now an international standard for controlling harmonics (IEC100-3-2) and PFC is mandatory for home appliances consuming 70W or more power in EU nations as of January, 2001."

And here is a cryptic explanation by Enermax :-

"the utility PF rate =95% @ 230Vac at full rated load. From January 1, 2001, two standards¡mEN61000-3-2 (power line harmonics) and EN61000-3-3 (power line flicker)¡ngo into full effect to all EC countries. All products shipped to EC countries or placed on the market in this area must be compliant to these standards."

Confusing, isn't it? Well, let's clear up the confusion.



 
   
Western Digital My Passport Pro 2 TB Portable (Thunderbolt) Hard Disk Drive Review Rev. 2.0
OCZ Agility 2 (E) 60 GB Solid State Drive Review
Intel Future SSD Models Leaked! Rev. 2.0
Windows Server 2008 Service Pack 2 Details Leaked!
An Inside Look Into The New Windows 7 Experience Index!
PC Power Management Guide Rev. 2.0
Razer Krait Optical Gaming Mouse Review
VIZO Armada RAM Cooler Review
Thermalright SI-97 GPU Cooler Mod Guide Rev. 2.1
Far Cry Review

 


Copyright © Tech ARP.com. All rights reserved.