RE: mpja has an HV kit

Judging from the looks of it is seems to be the most rude way one can think of
to get a standard B/W flyback running. I think there is only a 555 timer
oscillator driving the flyback through a darlington or a FET.

This means there is no regulation, i.e. the output voltage will only be set by
the initial setting on the primairy side (i.e. by the potentiometer
determining the 555's frequency). The electronics do not get 'feedback' from
the secundairy (HV) output about the voltage over there.

Furthermore, changes this particular used flyback also provides for the RGB
drive voltages and such, is pretty minimal.

Nevertheless I really think it ought to be fairly simple to design a new HV
cage around a off-the-shelf, commonly used flyback (philips comes to mind) to
today's standards. They all provide just the right Grid and anode voltages,
and have a nice screen- and focus control built-in.

The only thing would be to find a flyback which provides the right RGB
voltages (can't be really hard, I think 180 Volts is really standard) and some
other which I can't recall right now. Has anyone done some research allready?

Cya!

>>Just noticed -- www.mpja.com also has a high voltage power supply kit they
>>sell for lasers. Might this help with the replacement vector monitor
>>project ?
>
>I think I looked at this a while ago-- I thought it didn't have any sort of
>regulation for the HV? It would be neat to mess with though...
>
>-Clay
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Received on Tue Oct 10 15:50:46 2000