[mythtv-users] Getting OT: What size power supply for this backend...

David Brodbeck gull at gull.us
Thu Dec 14 19:52:27 UTC 2006

Boleslaw Ciesielski wrote:
> David Brodbeck wrote:
>> Also look for a PSU with a high "power factor."  It's difficult to
>> explain succinctly what power factor represents, but the closer to 1.0
>> the more efficient the PSU will be.
> This is not true. While power factor close to 1.0 is desirable because 
> it's good for power grid, environment and all, it has nothing to do with 
> efficiency and provides almost no direct benefit to a (residential) end 
> user. It does allow for a smaller UPS if one is needed though.

I've never been able to get a straight answer on whether residential
meters only charge for real power or whether you get charged for the
extra current used by reactive loads.  Some people tell me one thing,
some people tell me another.

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