Re: Funny vector drawing and TL082's

This fits in well with a theory that I have. That is that the original
manufacturer of a device is closer to the specs than an aftermarket. TI
makes the best IC's it seems and it was recommended to me years ago,
that I use RCA transistors as they had a better silicon purification
process.

I guess what it boils down to is not all devices are the same...try to
replace parts with the SAME manufacturer as the original.
Sigh, I can see my parts department REALLY growing now...

John :-#)#

ps: I've seen the same thing, thought I had a bad replacement part for
those TL82's...

Clay Cowgill wrote:
>
> 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

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