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Old 11-30-10, 10:27 PM   #13
Xringer
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Quote:
Originally Posted by Daox View Post
I think its odd that a high voltage like that would cause the excessive power usage you see. But, I hope that fixes it for you.

Why odd? It's simple.. Simple as pie. P=IE

Increase the voltage (E), or current (I) and you get an increase in P (Power)..

See my ideas about the power supply (above) and it sure seems like P=IE
is going to apply to simple transformer-less AC-to-DC power supplies.

The peak DC voltage is going to depend on the peak AC voltage.
My wild guess is that 250vac * 1.414 is going to provide about 353 VDC
to the FETs driving the motors.


We lost another CFL the other day.. I wonder if it was the high line voltage.?.
The bulb was less than two years old..
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