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Pastimes : Dream Machine ( Build your own PC )
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To: PMS Witch who wrote (10056)1/30/2000 8:52:00 PM
From: Howard R. Hansen  Read Replies (2) of 14778
 
Can a UPS introduce a 'variable capacitance' into the load to correct the power factor when loads become overly
inductive? One would think this could extend the time the UPS could deliver.

I don't know how you could correct the power factor to extend the run time. But in one respect batteries and capacitors are similar. They both store energy. You could use a bigger capacitor to extend the run time or a bigger battery. As batteries have a much higher watt/$ energy storage ratio than capacitors designers naturally use bigger batteries to extend the run time.
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