Re: New vector monitor design.

Clay sez...

>I have an old B/W 12" monitor that came out of a bootleg Asteroids
>Cocktail. The interesting thing about it is that there are *very* few
>parts on the board. What the designers did, was use a pair of those
>STK0080 (I think that's it, it might have been the STK0050) audio amps
for
>the deflection drive. (Think about 2"x3" hybrid package thing, they're
in
>NTE/ECG/etc if you want to look them up.)

FWIW Modules are available from consumer electronics repair houses *much*
cheaper than NTE/ECG. Try Dalbani. The STK0050 and STK0080 usually
run about $10-$15 each.

I was mentally dinking around with Zonn's proposal and I remembered I
have
a 100W audio amp with lots of input/output protection. I might just try
driving
the modified yoke with it and see if we get the required deflection. If
that works,
I might try using some cheap audio amps that HSC is selling. They were
made for home theatre stuff and might have sufficient drive for this.

>The STK0080 are these big SIP package integrated audio amps like you'd
find
>in a Fisher or low-end Sony consumer Receiver/Amp. Built in heat sink,

Actually, they don't have a built-in sink. Just a metal pad that you
mount *on*
a heat sink. These aren't used too much in the stuff I fix lately. They
went
back to discrete output devices. Cheaper I suppose.

>overcurrent protection, over temp protection, etc.

Are you sure about this one? Do you have data sheets?

Lastly, regarding Zonn's proposal...I always thought the yoke was an
integral
part of the HVT design of a raster display. If we start changing the yoke
Z, won't
that mess things up? I remember John (of John's Jukes) using a loose yoke
to keep the raster chassis happy in his vector HV hack.

Virtu-Al
Received on Tue May 27 18:04:13 1997