Connectors (was: NEXT Color Printer find

From: Richard Erlacher <edick_at_idcomm.com>
Date: Tue Jan 1 10:23:06 2002

see below, plz.

Dick

----- Original Message -----
From: "Ian Koller" <vze2mnvr_at_verizon.net>
To: <classiccmp_at_classiccmp.org>
Sent: Tuesday, January 01, 2002 9:03 AM
Subject: Re: Connectors (was: NEXT Color Printer find


>
>
> > Practical experience and hard knocks school is your best teacher
> > , I agree. Blow up, screw up some stuff as you learn as you go on is
> > required.
>
>
> Does that also apply to Nuclear Weapons Engineers?
>
Always has up to now ...
>
> jpero_at_sympatico.ca wrote:
> >
> > > From: ard_at_p850ug1.demon.co.uk (Tony Duell)
> > > Subject: Re: Connectors (was: NEXT Color Printer find
> > > To: classiccmp_at_classiccmp.org
> > > Date: Tue, 1 Jan 2002 02:08:07 +0000 (GMT)
> > > Reply-to: classiccmp_at_classiccmp.org
> >
> > > > >Then I would suggest you're working with engineers who are not
> > > > > particularly knowledgable about practical electronics. If they're
(say)
> > > > > mechanical engineers or civil engineers, then no problem. If they
claim
> > > > > to tbe electronic engineers I'd probably dispute that claim.
> > > >
> > > > I agree, last year they couldn't even build a set of LED Christmas
tree lights
> > > > without blowing them up, never heard of constant current drive !!!
I'm not
> > >
> > > Do you own a suitably large LART?
> > >
> > > I must have told the story of the 362.8 ohm resistor. In case I
haven't,
> > > it goes like this.
> > >
> > > I was working in a lab at a university over here when some final year
> > > engineering student asked me for a 362.8 ohm resistor 'as there are
none
> > > in the drawer'. I said that I was not suprised, and asked him what on
> > > earth he needed it for.
> >
> > Glug! Almost sprayed water on my precious IBM keyboard.!
> > Even 180 Ohms is good enough driven directly from TTL. :-)
>
Why on earth does that worry you? I routinely spray my keyboards with "409"
and subsequently hose them off in the kitchen sink after thoroughly brushing
them to get the glutch off. CocaCola, Beer, Eggnog, and other beverages,
not to mention sauerkraut, mustard, and other substances you'd not normally
apply to a keyboard have all been removed painlessly and without impact on
proper function of the keyboard. Afterwards, I simply spray them with hot
water and allow the keyboard to drip-dry.
>
> > > The answer? An LED current limiting resistor. Apparently he'd taken
the
>
It's not a bad thing to calculate the ideal value before looking to see what
you've got that's close.
>
> >
> > > I've come to the conclusion that the best (electronic?) engineers and
> > > programmers are all essentially self-taught. It's probably much the
same
> > > in all creative subjects.
> >
> > Practical experience and hard knocks school is your best teacher
> > , I agree. Blow up, screw up some stuff as you learn as you go on is
> > required. Straightening out those mistakes if you can discover is
> > excellent way to learn.
> >
> > > [...]
> > >
> > > > Agreed, I believe any so called engineer should have a practical
"hands on"
> > > > experience in both hardware and software, after all if they don't
understand
> > > > the basics they are of little use.
> >
> > > I wonder if the HPIB spec (if it was ever published) specifies the
> > > jackscrew threads.
> >
> > Might be not existent.
> >
> > 4-40 is right for those kind.
> >
> > > -tony
> >
> > Cheers,
> >
> > Wizard
>
>
Received on Tue Jan 01 2002 - 10:23:06 GMT