[Milsurplus] OK Smart People: Capacitive Voltage Divider?

[David Stinson]

I'm resurrecting a National NC-100A.  
Sounds beautiful.  Nice AM, BCB and SWL rig.
One problem:  our blasted 125 Volt AC power lines.
This rig wants 110 volts and 125 is very tough on it.
There is no room to hog-wire in a bucking transformer,
so that's out.   Niether can I dedicate a variac to running
this receiver.  
I understand one can use capacitors as an 
AC voltage divider by placing one in series with 
a leg of the transformer primary and one across the 
transformer primary.

How can a dummy who can barely do the math 
needed to number book pages determine what
values to use to drop this primary voltage from 
125 to 110? Or even if it will work?
 Easy!  He askes the dozens of people
smarter than him on the mailing lists.
Ain't that cool?  ;-)

TNX ES 73 DE Dave AB5S