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|    alt.electronics    |    Electronics design, repair, worship, etc    |    7,706 messages    |
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|    Message 6,043 of 7,706    |
|    Caveat to All    |
|    Power factor question    |
|    27 Mar 08 23:16:42    |
      From: caveat-lector@cox.net              Hi all,                            I have a question about the term "power factor".                            A number of years ago I was an install tech. for a company that sold Nortel       phone systems. I noticed that almost all the small units were sold with a       plug-in device that weighed about 25 pounds and I first thought it was a       very heavy-duty filter/surge suppressor but I was amazed to find out that       such a large unit was only rated for 6 amps. When I opened one up I found it       to have only two components, a HUGE doughnut coil (that made up about 4/5th.       the weight) and a HUGE capacitor, it was simply an L-C circuit.              I asked one of the tech's what it was and he told me it was a power factor       device.                            I ended up with two "spare" units and used one for my A/V system and the       other for my computer network. After finding out that nothing had changed       with either application I gave them away to a, at the time, friend of mine       who designs and tests battery backup and power supply units for ships and       private jets - thinking he might find a use for them.                            Tonight I was in another NG and read a post about surge suppressors and they       were talking about power factor correction and that reminded me about this       so I looked at wikipedia for an explanation of power factor. What I got was       a little over my level of understanding.                            I know a little about electronics, I did TV repair in the late 1980's but       didn't get too far into the theory of electronics so I would say that my       understanding is about at a 1st to 2nd semester level of electronics       understanding.                            Sorry for the long winded intro.                            My questions are . . .                            1. is there an easy way to understand power factor and power factor       correction?              2. is there any reason a person would want one of these units for home use?              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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