Re: Tron: parts question

On Mon, 29 May 2000 solarfox@texas.net wrote:

> LM3900 is a Quad Comparator, and 4N28 is an Optoisolator.

  So that helps, but I think it may be too specific. What general
area should I be looking in? I'm guessing these are semiconducter
devices, but there are about 15 areas w/i that section. (I'm sorry if
I'm explaining this poorly, the site is radioshack.com.)

  Optoisolator; is that any relation to the OpAmp family?
As always, forgive my ignorance, I really don't mean to be a pain, I'm
just trying to learn. =)

> However, Digi-Key (www.digikey.com) _does_ have both of these parts.
>The 4N28 (Digi-Key's part # is 4N28QT-ND) is $0.30 each, and the LM3900
>(Digi-Key # LM3900N-ND) is $1.23 each.
>The only downside to Digi-Key is that you either have to order a
>minimum of $25 worth of stuff, or they zap you with a $5 "handling
>charge"...

  Yeah, that's why I hadn't done to them or Mouser (anyone else out
there?) yet, I knew about the minimums. I have already learned that
when you want a handful of resistors and caps, plus a few other pieces,
$25 can be a really big number to acheive. =) Thanks for the help so
far, I'll check out the DK numbers and figure out what I need to ask
for.
                                        Remy LeBeau

  The early bird gets the worm, but the second mouse gets the cheese.

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Received on Tue May 30 08:31:27 2000