James Nelson wrote:
> I'm looking carefully at the National LM3886 Power OP AMP for direct yoke
> drive, and it doesn't cost the $100+ each like some of the other <choke>
> cool ones do, and it has all kinds of protection circuitry, and Class AB
> circuitry.
>
> Rodger is going to look at the LM3886 to see what complaints he might have
> with the device, and I might throw up a proposed 1st order schematic for
> that circuit soon.
Well, I've looked at it and have some serious questions if it has the raw balls
needed for a color vector monitor. B&W, maybe, but I think it's going to keep
shutting down running color, even with massive cooling. Especially on games
that overscan the monitor.
Yeah, shutting down will protect the IC, but how many times can you collapse the
sweep on a game before you burn a big cross in the middle of the CRT. We're not
talking losing one half of a screen here, we're talking collapsing into a line.
Or worse yet, a dot if both channels dump at the same time. The spot killer had
better be damn fast.
I hate to keep raining on this parade so would someone please tell me I'm full
of it (and be ready and able to prove it!) already?
Received on Fri Nov 5 00:56:30 1999
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