On Wed, 5 Feb 2003, Chris Loiacono wrote:

*>> P = 15 W
*>> U = 96 V
*>> I  =  0,15 A
*>> unloaded resistance = 108 ohm.

Ztot (real) = U/I = 640 Ohms real

(in phase pointer vector triangle):
cos (Phi) = R/Ztot = 108/640 = ~ 0.169 (this is not good, you need 0.8 or
above at least for mains operation - there are some exceptions though). To
compensate it add a capacitor with Zc ~= 630 Ohms in parallel with the
voltage input. That is almost exactly 5uF at 50Hz (1% off). As always
check my numbers ;-)

Peter

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