Even the most basic books in electronics cover power supply and rectifier hookups. You are looking for voltage doubler circuit. Total parts count 4 components two diodes and two capacitors.
A picture is worth a thousand words, but in its stead I will blather through a physical schematic discription in, hopefully, far less than the kiloword limit.
draw two long horizontal lines on a sheet of paper with your crayolas about 6 inches apart.
On the bottom line in the middle draw a ground symbol.
Now, in the middle of these horizontal lines draw, vertically, two diodes in series between the lines and connecting them with the cathodes down or arrows (anodes) pointing down.
Next, to the RIGHT of this vertical series diode string, you should draw a capacitor vertically connecting the horizontal lines and, in effect, shunting the diodes you just drew.
Finally, draw a horizontal capacitor to the left of the diodes in the middle of the two horizontal lines with one lead, (the right one), connected to the center of the series diode pair.
The HV AC from the transformer is applied between ground and the horizontal capacitor's free lead to the extreme left.
This circuit is ground referenced positive and the minus or negative HVDC is taken across the vertical capacitor with the high tension negative lead being the top most original horizontal line and the ground at the bottom most horizontal line.
This circuit and not very efficient, but it does allow for a lot of common ground component leads and only one floating diode and capacitor connection.
All components should be rated in excess of 2 X PIV. With a 10 kv transformer that means each diode and capacitor should handle 28kvDC!!!
Richard Hull
Created on Friday, June 01, 2001 12:30 PM EDT by Richard Hull