Quote:
Originally Posted by jr_tech
Scratches head... how does 122 Volts @ .39 Amps equal only 7.3 Watts? 
jr |
Answer: power factor for this unloaded power transformer must be quite small, about 0.15 !
Just measured an unloaded tv power transformer of similar size on a kill-a-watt meter, readings were:
122 Volts, 0.26Amps, 9 Watts, 34 VA, 60Hz, 0.28 PF (power factor), so I believe that the PF could be as low as 0.15.
Did you happen to get a power factor reading?
jr