Funny vector drawing and TL082's

Just thought I'd mention this since it caused me some grief and might
save some of you some trouble...

I was testing a display corrector and was getting weird "squiggles" in
some of the vectors. I suspected a bad ground, but after that checked
out OK I went after the power supplies. After working those over to no
avail I decided to swap out the Exar manufactured TL082 op-amp (common
op-amp in Atari Vector Generators) for a TI made part.

Low and behold, TI parts worked fine, XR marked parts didn't. Weird.
Extra-strange was the fact that vectors would be deformed *in* the line,
and not at the beginning or end points. Beats me what would cause that,
but Exar's off my "approved vendor list" for working on vector
generators. ;-)

-Clay
Received on Mon Jan 25 14:16:50 1999