Oh yeah, to reply to myself,
I forgot the 4th solution which is Rodger Boots idea of using an ignition coil
to generate the high voltage. Regulation feedback would have to be accomplish
by a tap off the focus voltage resistor array that would have to be run directly
from the HV supply.
Maybe it could work...
It least it would run from 12v and would be pretty damned bullet proof.
-Zonn
On Thu, 11 Apr 2002 17:05:34 -0700, Zonn <zonn@zonn.com> wrote:
>The third solution would be to find a standard raster flyback Xfmr that has the
>built in Focus assembly, and design new electronics around it. The problem
>would be that it would still be about $200, but would now require a separate
>isolation transformer. (Standard HV flybacks require 110v on their primaries.)
>When using a WG HV, the monitor's transformer supplies the isolation from the
>power main.
>
>It looks like Sega used a standard HV, but Sega monitors ran from 120VCT
>transformers, so had the primary voltage available to them.
>
>I you can't tell I looked into all this at one time, it didn't seem very cost
>effective, unless you could really go into production (>1000 units).
>
>-Zonn
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Received on Thu Apr 11 17:22:44 2002
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