Zonn wrote:
>
> On Wed, 17 Apr 2002 16:18:16 -0700, John Robertson <pinball@telus.net> wrote:
>
> >Yes, no, maybe.... ;-) Revisions cost time/money. I'll see though. Would it
> >be better to cut out if one of the two deflections fails? Or only if both
> >croak? As I anticipate this will draws it's power from the deflection
> >supply, if the Positive supply fails then so would the HV cage.
> >
> >An LED on the cage would be nice to show that at least it has some power...
>
> Let me ask this, would this power supply have the 25kv over voltage protection
> required by law? If so, this would be a good place to add more disable logic
> since there is logic already there to disable the supply.
>
> If it doesn't, then this supply could not be used in build new monitors, though
> as a hobbyist HV supply, it can probably be sold, since at that point you are
> offering just an HV supply, and the buyer can do whatever they want with it --
> though people buying these should be careful to set the voltage below 25kv when
> installing them. Voltages above 25kv generate X-rays.
>
> -Zonn
Voltages above 16,000 generate X-rays, color CRTs have leaded glass to
control that.
The power supplies being replaced seem to be mostly 19.5 KV. If they
make it to 25 KV X-rays won't be the only problem!
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Received on Thu Apr 18 00:12:02 2002
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