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DPRG: biasing & reading a phototransistor

Subject: DPRG: biasing & reading a phototransistor
From: Alan Bredon abredon at imagin.net
Date: Wed Aug 18 22:56:50 CDT 1999

Don't apologize, Mike.  *I* like your posts.  People can learn from them
then they wouldn't need to keep asking.  It also shows engineering in a
good and realistic light, which society doesn't do very well.  

Hobby Robotists learn very quickly the value of an experienced engineer
even though the marketeers, salesmen, and company management seem to
think that *anyone* can put something together and they easily forget
where THEIR money actually originates! They need to remember that anyone
can have an idea, it takes an engineer to make it work!

Alan Bredon

MIKE MCCARTY -- 93789 wrote:
> )Mike,
> )
> )Thanks for the incredibly detailed explanation on comparators.  I've
> )also downloaded an application note from National, and it pretty much
> )agrees with what you said.  I'll try out the values you suggested and
> )let you know how it works.
> You're quite welcome, though I have to admit it probably wasn't
> appropriate for the general echo.
> I wouldn't say that *National* agreed with *me*, I think I'd say it the
> other way 'round
> :-)
> Please do let me know how it works out.
> [snip]
> )> I hope I included enough example math for you to figure out any further
> )> experiments you might want to try.
> )
> )You certainly did!  I'm actually starting to remember things from my
> )analog electronics class 17 or 18 years ago.  [Unfortunately, I had the
> I guess my hopes were that you could see how the analysis was done, so
> if I either made a mistake, or didn't cover something you needed, you
> could correct or alter to suit your needs.
> I know I tend to ramble on and post larger messages than I should
> sometimes. Anyone else wants to kick me for large messages, go right
> ahead.
> There's always a balance between including enough material, and putting
> out long winded boring stuff which should have been in a private e-mail.
> Mike
> ----
> char *p="char *p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
> I do not speak for Alcatel. <- They make me say that.
> This message made from 100% recycled bits.


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