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From: Greegor on 18 Jun 2010 02:27
> >Since you mentioned in another thread that you work on sat receivers I
> >am a bit surprised now ;-)

> Why?  He isn't an engineer.

Archie? He claimed to have worked in a myriad
of specialty areas of electronic engineering
and a 30 year career.

It's complete BS of course, the wishful
delusional pretense of a mental case.
From: Michael A. Terrell on 18 Jun 2010 06:24

"krw(a)att.bizzzzzzzzzzzz" wrote:
>
> On Thu, 17 Jun 2010 21:20:00 -0400, "Michael A. Terrell"
> <mike.terrell(a)earthlink.net> wrote:
>
> >
> >"krw(a)att.bizzzzzzzzzzzz" wrote:
> >>
> >> On Thu, 17 Jun 2010 13:35:50 -0700, Joerg <invalid(a)invalid.invalid> wrote:
> >>
> >> >Archimedes' Lever wrote:
> >> >> On Thu, 17 Jun 2010 11:24:30 -0700, Joerg <invalid(a)invalid.invalid>
> >> >> wrote:
> >> >>
> >> >>> Always got some here in a drawer. Just be careful, these can oscillate
> >> >>> without you even knowing it.
> >> >>
> >> >>
> >> >> How would you know then? How do you know the claim is true, for that
> >> >> matter.
> >> >>
> >> >
> >> >People in the RF biz often have analyzers available. Then there is
> >> >experience: A sure-fire way to know it's fishy is when you slowly crank
> >> >up the supply voltage and suddenly there is a jump in current. For that,
> >> >I have mounted high-quality 20-turn potmeters on some lab supplies. This
> >> >is actually an age-old method in the RF-world. Lots of other tricks as
> >> >well, such as wideband detectors.
> >>
> >> About a year ago I ran into a case where one audio channel was bleeding into
> >> another (about 3dB down). It didn't take long to figure out that one of the
> >> op-amps feeding the other channel of the codec was oscillating, swamping its
> >> input amplifier (which was supposed to be muted).
> >>
> >> >Since you mentioned in another thread that you work on sat receivers I
> >> >am a bit surprised now ;-)
> >>
> >> Why? He isn't an engineer.
> >> >
> >> >> Are black holes visible? I say yes. One must simply know how and
> >> >> where to look.
> >> >
> >> >
> >> >Nah, got to look for that tell-tale halo :-)
> >>
> >> Of course they're not visible, but they do cast a shadow. ;-)
> >>
> >> >Other times the announcement of oscillatory behavior can be more
> >> >vigorous, as in PHUT ... *BANG*
> >>
> >> Or burn a finger. BTDT (uA709 in college).
> >
> >
> > Just be glad it wasn't a Philbrick Op Amp. :)
>
> Well, we had a couple of analog computers that I took care of in college, too.
> The opamps in those ran pretty hot too, but they had those glass things with
> the glowy thingys in them to warn you that they were on. ;-) The servo
> multipliers and sine converters were neat.


The Philbrick KW/2 had a pair of 12AX7 glass things with glowy
thingys. :)


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.
From: krw on 18 Jun 2010 20:02
On Thu, 17 Jun 2010 23:27:38 -0700 (PDT), Greegor <greegor47(a)gmail.com> wrote:

>> >Since you mentioned in another thread that you work on sat receivers I
>> >am a bit surprised now ;-)
>
>> Why? �He isn't an engineer.
>
>Archie? He claimed to have worked in a myriad
>of specialty areas of electronic engineering
>and a 30 year career.

He's been a janitor for a large defense company, with access to all the labs.
Notice that he never says what *he* did, just what the others have done.

>It's complete BS of course, the wishful
>delusional pretense of a mental case.

Dilusions of adequacy.
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