Re: How inaccurate is a 555 or 7555 REALLY?


mri_bob wrote:
To quote you: "Try to understand the technology you pontificate about
before you claim to be getting real"
I do, you don't. Pity about that.



i guess i will have to turn in my engineering diploma then.

I wouldn't bother making the effort. Diploma's don't count for much.
The IEEE admitted me as member 26 years ago without any evidence of any
academic training in engineering (I do have a Ph.D. in Physical
Chemistry) on the basis of a declaration from one of the IEEE members
at EMI Central Research that I knew what I was talking about. I'd
gotten two patents i the three years I'd worked there, so they may have
had an exaggerated idea of my competence.

i have run into clowns on newsgroups before who attacked other peoples ideas just so
they could tell their own stories about how much they know, it's nothing
new.

And it does tend to stop people sounding off about stuff they don't
know enough about.

i was attempting to help a novice learn why it would be difficult but
maybe not impossible to do it with a 555 if temperature was tightly
controlled but that a microcomputer circuit would be better. Bill has his
own agenda which is different from mine.

Based on a fairly wearing month or so back in 1974 trying to do the
same job for an over-optimistic boss. We ended up getting fairly close
with an emitter-coupled multi-vibrator, but the temperature dependence
of the Early effect was bad enough that even that circuit didn't make
it.

i'm finished with this topic.
people who need to end their posts with insults have nothing to offer to
me.

Then you are condemned out of your own mouth.

Your second message in the thread - message 6 in the lst ends " let's
get real, huh? "
which is the kind of discourtesy I repay in kind. My own idea of my
attitude on this news group is "polite until provoked" but John Larkin
does keep on finding insults in my posts that I could have sworn
weren't there when I composed them (and don't look much like insults to
me when I reread them). Phil Allison would blame this on autism, but he
blames a lot of stuff on autism. He's not an expert psychologist,
unlike my wife's academic colleagues (who won't use me as a test
subject any more, because I know too much).

--
Bill Sloman, Nijmegen (but in Sydney at the moment).

.