Ruben  I've seen this solved by using a lot of cheap, comparetively low
ohm, resistors in series.  This is also how we make test loads for HV power
supplies...gj

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> From: Ruben Jonsson <ruben@sbbs.se>
> To: PICLIST@MITVMA.MIT.EDU
> Subject: [OT] Bleeder resistor.
> Date: Friday, November 07, 1997 2:55 AM
>
> Hello everybody.
>
> I am currently designing a high voltage DC power supply
> that will generate up to about 50 000 Volts at 1-2 mA.
> Since there is a voltage trippler at the output it has
> a capacitance which doesnt automaticaly get discharged
> when the power is turned off. Because of this I will put
> a bleeder resistor in the range of 500 - 1000 M ohm over
> the output.
>
> My problem is that these resistors are not very common and
> rather expensive (I need 2 because each unit will have
> both a positive and a negative high voltage). So I'm
> asking if there is anybody on this list that know of
> any supplier for these kind of components or perhaps
> another way to solve my problem.
>
> I know that this isn't exactly the right place for this type
> of question, but there seems to be many people here that
> know alot about much. And by the way, the unit is controled
> by a PIC.
>
> TIA