>    A cap reactive supply can be good. A 1uF poly cap
>    is about 3200ohms at 50Hz and 2700ohms at 60Hz if
>    I remember properly. Xc = 1/ 2pi f c
>
> And it has to dissipate as much power as a 2700ohm resistor, right?
> A bit of a problem, since caps are rarely rated for power dissipation.

No, it shifts the phase so it does NOT dissipate any power except what the
capacitor losses dictate. Draw one of them vector diagrams for RC
circuits. Zc is vertical so it does not dissipate power. The load is a R
and it does dissipate (it has a horizontal vector in this representation).

Peter

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