Re: I X-Rayed my Apple IIe

["Grant Stockly" <grant@stockly.com>]

> Those power levels sound much more doable, but 480 Watts is still
> quite a supply!  What type of power supply does it use?

Some units use a transformer to go from 80v to 800v and then use diode
doublers to get it to 80kv.

Along with each doubler step there is often a feedback resistor.  On a
450kv system you will have a voltage dividor with a resistance of
around 1.5G.  : )

> When I was in high school, I imagined operating them with an induction
> coil, but the highest voltage DC supply I ever made was about 2800v
> (at 15mA), and it was a linear supply.  A flyback supply for 30kV at
> about 1mA seemed practical, but I never aspired to higher powered vacuum
> tube circuits.  ;-)

Even a low power x-ray tube can be very dangerous.  If you do anything
like this you should take a radiation safety course, get a book, survey
meter (and calibrate it).

X-rays are invisible death rays if you don't take proper safety
measures.