Re: Ampliphone HV-other options?!

Oh, sorry about the misunderstanding. However, for testing of monitor
chassis, we don't bother to hook up the HV anode, we just place it in a
glass coffee mug and ignore it (other than having the mug away from
fingers, metal, etc.). We DO have a yoke plugged in, that is important,
but running the HV with no load is not a problem, after all it is the
same result as if the picture tube brightness was turned down to "0",
then there is no beam current, and the tube reaches it's maximum charge.
The beam current at highest brightness at best is in the low
milliamps...

John :-#)#

Clay Cowgill wrote:
>
> > You can't generate X-Rays without a vacuum, and a target (like inside a
> > picture tube or X-Ray tube)...just raw HV won't do it, otherwise those
> > folks living under/near transmission towers might have a problem...you
> > thus do not need to load down the HV.
> >
> Uhhhh, right. :-) That's what I was trying to get at. I don't want to
> hook up an experimental HV supply to a CRT and end up messing up all the
> camera film in the house. :-)
>
> So, I'm wondering if anyone knows of a reason that you couldn't just sink
> the anode cup of a flyback to ground through a resistor for the sake of
> testing. (I'd imagine that leaving it open with a spark-gap to ground could
> result in too high of current flowing and killing the flyback or something
> else... Like *me* for example! ;-)
>
> -Clay
>
> > > So is it "safe" for an HV transformer to have its anode coupled to
> > ground
> > > through a resistor? (To just burn off the HV output without having to
> > hook
> > > it up to an actual CRT.) Might not want to be generating soft x-rays
> > while
> > > figuring things out...

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