Quote Originally Posted by Ron Marcus View Post
Look on Microchip's website for a high voltage generator using a PIC. It is informative and pretty cool.
...
Looking under Application Notes - Voltage Regulation, I found this:

TB053 - Generating High Voltage Using the PIC16C781/782
http://ww1.microchip.com/downloads/e...tes/91053b.pdf

The only spec I see for the inductor is:
"Power inductors, in the range of 330 μH @ 0.655A, are common and readily available."

When I looked for "power inductors" at Digikey, I was faced with this:
http://search.digikey.com/scripts/Dk...er%20inductors

I selected "through-hole 330uH" and 31 items popped up, then sorting by Current and this item at 850mA was the most affordable over 655mA ($0.85 ea.):
http://search.digikey.com/scripts/Dk...me=811-2103-ND

I'll order a bunch in my next order and do some testing.