HDTenEightyP/NetNews huggingface dataset:
From: covingc@ee.tamu.edu (Zaa!)
Subject: What is this device? (Small IC)
Followup-To: covingc@ee.tamu.edu
Organization: Texas A&M University
Date: Thu, 10 Sep 1992 07:52:19 GMT

I have an SAE A202 Stereo Power Amp that I'm working on.  It has one
noisy channel (random static noise) and I've traced this all the way
back to its input board.  I suspect that its coming out of a small 6
pin IC of some sort.  It looks something like

          |   |  |
         +--------+
         |  K333  |
         |  F BE  |
         +--------+    (about .2 x .25 inches)
          |   |  | 

There are no markings other than the ones shown above.  I assume it is some
sort of amplifier, as the input to the amp goes through a cap into this with
some resistors to ground, etc., and other pins connect to supplies, bias net
works, and transistors further along in the amp.

Anyone out there know what this is exactly?  And where I can find one?

Also, is SAE still around, or does anyone have any info on this amp (I'm
doing this "blind," no schematic, etc.)

Thanks in advance...

Charles E. Covington
covingc@ee.tamu.edu
From: yee@mipgsun.mipg.upenn.edu (Conway Yee)
Newsgroups: sci.electronics
Subject: Re: Power Supply schematics / documentation needed
Date: 10 Sep 92 19:12:10 GMT
Organization: University of Pennsylvania

In article <1992Sep3.034525.24959@unixg.ubc.ca> pdivine@unixg.ubc.ca (Patrick Devine) writes:
>Can anyone lead me to some infomation about building a basic power supply?
>Perferably in a postscript document.

The ARRL Handbook has several power supply projects.


-- 
411 Blockley Hall      |                    Conway Yee, N2JWQ
418 Service Drive      | yee@ming.mipg.upenn.edu    (preferred)
Philadelphia, PA 19104 | cy5@cunixa.cc.columbia.edu (forwarded to above)
(215) 662-6780         |
Newsgroups: sci.electronics,rec.radio.amateur.policy,alt.folklore.urban
From: brentw@coopsol.com (Brent Williams)
Subject: Re: Is this legislation for real?
Organization: Cooperative Solutions, Inc.
Distribution: usa
Date: Wed, 9 Sep 92 20:35:32 GMT

mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:

>I have been told that the following 2 things are before the Senate, but
>cannot locate them in Congressional Record and similar sources.  Can
>anyone elucidate?

>(1) A bill to abolish private consulting, "Senate 1706", mentioned by
>a correspondent to Robert Pease in a recent issue of _Electronic Design_.
>(There _is_ a Senate 1706, but it has to do with import duties on some
>industrial chemicals.)

OK, here we go debunking yet another piece of net.hysteria.

This is actually IRS Code Section 1706.  And it's not pending legislation.
It has been the law for six years now.  IT DOES NOT IN ANY WAY ABOLISH
PRIVATE CONSULTING!  What it does is provides a set of questions that
are to be used as guidelines for determining who is a consultant and 
who is really an employee masquerading as an independent consultant to 
allow deductibility of mileage, business lunches, etc.

They were trying to correct abuses where Joe Smith is a "contractor" 
that has only one client -- XYZ company, where he bills 40 hours per 
week.  He gets to write off his mileage, his lunches, and a bunch of 
other stuff that employees of XYZ company don't get to write off.  

Unfortunately, Section 1706 also made it harder for people in legitimate 
long-term contracts (i.e., 6 months of 100% time) to compete without 
hiring themselves out to large "body shop" firms, because the guidelines 
set forth in Sec. 1706 would tend to suggest that they're "employees" 
of the company.  That's why the "body shop" firms actually backed 
Section 1706 when it was first implemented as part of the 1986 
"Tax Reduction" bill.  (Memo to myself:  Ask George Bush why if it 
was tax reduction, the dollar amount of personal income tax collected
in this country more than doubled over the last 6 years.  Sounds like 
another masterful piece of Republican doublespeak to me.)

So Section 1706 does not outlaw consulting -- big companies like 
EDS, Andersen Consulting, as well as many smaller consulting companies
are all having banner years -- but makes it harder for obvious scams.
Unfortunately, it makes it harder for a lot of honest one-man consultants
to make a living as well.  But when have you ever known government to 
correct a problem like this *properly*?

-brent


-- 
Brent Williams/Cooperative Solutions Inc., San Jose CA   (408) 377-0300
brentw@coopsol.com
Cooperative Solutions makes Ellipse, a development environment for
industrial strength graphical client/server business applications.
From: prob@btmp24.be (Pascal Roobrouck SH53)
Newsgroups: sci.electronics
Subject: info on ST62XX MCU
Keywords: MCU
Date: 10 Sep 92 09:58:42 GMT
Reply-To: prob@btmp24.be (Pascal Roobrouck SH53)
Organization: Alcatel Bell Telephone, Antwerpen, Belgium


In article <1992Sep9.155129.12557@ncar.ucar.edu> Herb Poppe aksk :


>> I don't use the 68HC05 but I do work with the ST62T15.

>Who makes this device?
>Is its instruction set patterned on some other well-known device?
>How many pins does it have.
>Peripherals? (Timers, A/D, D/A etc.)
>Other family members; devices with EEPROM?...

and here are the answers :

The ST6 family is a product of SGS-THOMSON (ST), it consists of a number
of device families ST61 ST62 ST63, etc. I only use the ST62 family. The
instruction set is (as far as I know) NOT compatible with MCUs from
another vendor... Within the ST62 family there are four main members :

ST6210 : 2K ROM / 12 I/O
ST6215 : 2K ROM / 20 I/O
ST6220 : 4K ROM / 12 I/O
ST6225 : 4K ROM / 20 I/O

The 12 I/O versions come in a 20 DIP package, the 20 I/O versions in an
28 DIP. I use also a 20 SO-package. For all versions there are EPROM
versions (ST62EXX) and One time Programmable versions (ST62TXX). It has
the following peripherals on-chip : 8 bit timer with 7 bit prescaler,
All I/O pins programmable in one of 5 modes (pullup/ no pullup,
interrupt, edge/level triggered, CMOS out, Open drain out, Analog in), 8
bit A/D convertor (70 us), Watchdog Timer, 64 bytes RAM.

The MCU is however, not fast.... 8 MHz Xtal max, divided internally by
13, and four of these cycles per instruction (for most instructions..
some are faster), results in 6.5 usec instruction cycle... However in
terms of memory usage, the code is quite efficient : the most frequently
used instructions are only 1 byte.

You can start developing with this little machine by buying the ST6
Starter Kit. It includes four samples of ST62E10 and ST62E15, a
programmer that fits into your PC's printerport, a MacroAssembler, and a
Software Simulator (MS DOS) + all databooks related to this material.
The kit is quite cheap (7500 Bfr = $250) and the OTP processers cost
about $8. However I think that in the USA this can be less because most
hardware costs in Europe two times the price they charge in the USA.
(can someone explain this ??) An emulator exists for it (and it would be
usefull since the simulator doesn's simulate the timer and the A/D
convertor), I don't know what it costs.


SGS-THOMSON has other (more performant) families like the ST9 that are
direct competitors with Motorola's HC11 and others...

So far my answers..  Now my question : Some weeks ago I asked if anyone
has source for this device, (or utilities like a compiler or so) but I
got no answers yet. I hope at least someone in the world has done some
projects with it !

Regards & Succes,

Pascal Roobrouck,
       
   ~~..~~
     `'
From: sldf3@io.ee.usu.edu (beal weston r)
Newsgroups: sci.electronics
Subject: Re: Impedance match 50 to 75 ohms
Date: 11 Sep 92 16:18:17 GMT
Distribution: na
Organization: Utah State Univ. EE

In article <1992Sep10.175850.24383@lonex.rl.af.mil>, Brian R. O'Hern (BRO'HERN) writes:
|> Short of buying a pad, does anyone know a good (cheap) way of matching a
|> cable tv coax (75ohms) to the input of a HP spectrum analyzer (50 ohms)?
|> I'm interested in the 500MHz to 1GHz range.
|> 
|> 
|> Thanks
|> BRO'HERN (Electronics Engineer)
|> ____________________________________________________________________________

Impedance matching is done in regards to a specific frequency.
You could do a really good match at about 800MHz and hope that
it is good enough over your band.
Any textbook on microwave electronics describes basic impedance
matching with lumped element ( resistors, capacitor ) or
transmission line matching networks.  A good book will even
describe broad band matching.

I could use some really swift computer tools to calculate
one for you, but then what would YOU learn from that?
I will do it if you really want me to.

-- 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%          							    %%
%%  Weston Beal			:  I have a piece of hard rock      %%
%%  sldf3@sol.ee.usu.edu	:  candy, but it's not for eating.  %%
%%  sldf3@cc.usu.edu		:  It's for looking through.        %%
%%                                                                  %%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
From: albert@PROBLEM_WITH_INEWS_GATEWAY_FILE (Albert Alcorn)
Newsgroups: sci.electronics
Subject: Re: Question about origin of name of BNC connector
Date: 8 Sep 92 23:03:27 GMT
Organization: Hewlett Packard, Semiconductor Test Systems
X-Newsreader: Tin 1.1 PL4

lmbrown@vela.acs.oakland.edu (lmbrown) writes:
: I think that the BNC stands for Bayonet Connector.  Can anyone confirm or
: disprove this?
: 
: 
The one I heard was:

Bayonet Navy Connector

Albert
Newsgroups: sci.electronics
From: mark@lenti.med.umn.edu (Mark Olson (CDC))
Subject: Wanted: source for RF power modules
Organization: University of Minnesota
Date: Tue, 15 Sep 1992 17:51:50 GMT


   Hello,
  
  I'm looking for a source of RF power modules that operate in the 6m (50mhz)
band.  I know a lot of manufacturers make these parts but I am finding it
hard to locate a supplier for them.  The company I have dealt with in the past
, RF Parts, Inc. is out of stock and the parts are back-ordered to Japan.
They carry the Toshiba line.  I've heard that Phillips also manufactures these,
does anyone know of a supplier?
  
Thanks, and sorry for the use of bandwidth -
  
mark olson
mark@lenti.med.umn.edu
From: tomb@hplsla.hp.com (Tom Bruhns)
Date: Wed, 9 Sep 1992 22:11:10 GMT
Subject: Re: Try this with your DMM
Organization: HP Lake Stevens, WA
Newsgroups: sci.electronics

With regard to asking a DMM to measure its own battery voltage, 
Mark-Tarbell@suite.com writes:

>Any ideas?

Sure.  Charge a cap with the battery voltage and measure it.  
Linear Technology even makes a special switch IC to do this sort
of thing gracefully, if you need to do it often.  It helps if
the cap has low leakage and the DMM has an essentially infinite
input impedance on the required range.  Try a time constant of
DMM input R * C of 100 times as long as it will take you to read
the DMM, for a 1% error.

Trying to measure the battery directly is dangerous at best, since
you are shorting out some part of the guts of the DMM when you hook
the input leads back to the battery.
From: laird@stable.ecn.purdue.edu (Kyler Laird)
Newsgroups: sci.electronics
Subject: Re: Can you Modify an OLD Pager to a new frequency??
Date: 14 Sep 92 16:15:43 GMT
Organization: Purdue University Engineering Computer Network

While we're on this...what about modifying a pager to receive
commands from a non-commercial source?

I'd love to be able to activate/send text to pagers at home
and at work.  I've listened to some voice pager channels; it
didn't sound too complex.

Thanks!

--kyler
From: jpw@minerva.ece.drexel.edu (Joseph Wetstein)
Newsgroups: sci.electronics
Subject: telephone lines
Date: 15 Sep 92 15:30:12 GMT
Distribution: usa
Organization: Drexel University, Philadelphia PA

I was wondering if anyone could help me out with some information:

I would like to build my own telephone/answering machine device
(digital electronics, for the most part), but I want to power the thing
from the phone lines. Does anyone know how I can get a nice clean 
voltage from the phone lines to power a digital device? I figured that
transformers would be necessary, but I'm not sure of the implementation.

Thanks,
Joe Wetstein

email:jpw@coe.drexel.edu
From: rind@binoc.bih.harvard.edu (David Rind)
Newsgroups: sci.med
Subject: Re: Medline..How to?
Date: 13 Sep 92 21:03:55 GMT
Distribution: na
Organization: Beth Israel Hospital, Harvard Medical School, Boston Mass., USA

In article <BuCJ9I.n1C@usenet.ucs.indiana.edu>
 dolmen!jgraham@moose.cs.indiana.edu writes:
>I would like to know how to access Medline. 

There are a number of programs that provide access to the Medline database.

One such program is PaperChase (run by people who work down the hall
from me).  It's very easy to use.  Access via Internet should be available
shortly.

If people are interested in how to connect, I'll be happy to pass on
any requests for information that are emailed to me to the PaperChase
crowd.
-- 
David Rind
rind@binoc.bih.harvard.edu
Newsgroups: sci.med
From: wilkman@med.unc.edu (Alice Wilkman)
Subject: Re: 15 min phobia cures (was Re: Xanax)
Organization: UNC-CH School of Medicine
Date: Thu, 10 Sep 1992 20:35:56 GMT

In article <1992Sep9.164508.2773@newstand.syr.edu> mdkline@rodan.acs.syr.edu
(Mark D. Kline) writes... (much deleted)
>...Or should we believe
>in NLP because this fellow can cure phobias in 15 minutes.  I've
>treated phobias in a single session - no drugs, no psychoanalysis, and
>no NLP.  So what?

Well, phobias and the treatment thereof have been the 
subject of several postings lately.  This is an intriguing 
assertion on your part.

I would be very interested in hearing what you did 
specifically to "treat" (and I presume you mean "cure" or 
relieve the symptoms of) phobias in a single session.

What criteria did you use to determine that your patient had 
a phobia?  What criteria did you use to determine success?  
Did you do any follow-up to determine if the problem 
returned?  How often have you done it?  How long is
a typical session?  How often have you attempted a single 
session treatment and failed in a single session?  What do 
you do then?  How do you record this intervention on the 
patient's chart?  Is this a method you learned from someone 
else or did you develop it yourself?  The usual questions...

Thanks.

Sandy Wilkman
wilkman@med.unc.edu
Newsgroups: sci.med,talk.politics.misc,alt.activism
From: rn11195@sage (Robert Nehls)
Subject: Re: Baclofen
Organization: Medtronic, Inc.
X-Newsreader: Tin 1.1 PL4
Date: Fri, 11 Sep 1992 14:50:46 GMT

scheiber@sage.cc.purdue.edu (Jennifer Scheiber) writes:
: In article <h2mnx4#.lindae@netcom.com> lindae@netcom.com writes:
: >
: >  
: >Is anyone familiar with the drug called Baclofen?  If so, I'd like to
: >know what it is, what it's used to treat, and any possible side effects.
: >
: >Thanks.
: 
: It is a centrally acting skeletal muscle relaxant, used specifically
: in treating MS and spinal cord lesions. Common side effects include:
: drowsiness, dizziness, weakness, and nausea. 
: 
: -Jennifer  i
: .
:     
: -- 
: _____________________________________________________________________________
: *                  J e n n i f e r      S c h e i b e r                     *
: email: scheiber@sage.cc.purdue.edu      School of Nursing - Purdue University
: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

One other note.  Baclofen is also used to control spasticity.  Also,
Medtronic has received approval to use Baclofen in their implantable,
programmable drug pump.  By using the drug pump, the Baclofen can be
administered directly where its needed, a smaller dossage can be
administered at the rate prescribed by the physician, which should mean
less side effects for the patient.
--

Bob Nehls                             Sr. Design Engineer
rn11195@sage.medtronic.com            (612)574-8559

Working Towards Full Life...
From: strnlght@netcom.com (David Sternlight)
Newsgroups: sci.med
Subject: Re: Xanax
Date: 14 Sep 92 22:20:36 GMT
Organization: Netcom - Online Communication Services (408 241-9760 guest)


Mark Kline shows his ability to post snow job messages yet again,
in which he uses serious language without any understanding. The
NLP treatment of headaches is not, as he claims, an anchoring
technique at all, but a submodality technique. Submodalities
are among the most successful of the NLP techniques.

He also tries to snow us by telling us he's followed the field since
1970. I've been following the behavioral therapy field since 1952. So
what! It's substance that's at issue here, not Kline's attempt
to authoritize himself.

If he's going to nominalize me, by the way, it's Dr. Sternlight, not
Mr. Sternlight.

David
Newsgroups: sci.med
From: yazz@locus.com (Bob Yazz)
Subject: Re: FDA/ Amino Acids/ Smart Drugs
Keywords: amino acids   FDA   alternative approaches
Date: Thu, 10 Sep 1992 19:26:54 GMT

geb@dsl.pitt.edu (gordon e. banks) writes:

| lady@uhunix.uhcc.Hawaii.Edu (Lee Lady) writes:
| 
| >they are safe as a drug."  He goes on to cite specific concerns, mostly
| >having to do with the possibility that tryptophan (for instance) might
| >be taken in combination with other drugs which would accentuate its
| >action.  Readers can make up their own minds as to whether these
| >dangers are really great enough to justify keeping tryptophan off the
| >market.
| 
| I seriously doubt whether most readers of this have the training
| to come to a valid conclusion on this subject.

I'm not sure what you mean here, Gordon.  Certainly, most folks aren't
in a position to know that tryptophan + Prozac is a bad idea, or that
tyrosine + MAOI's are a bad idea.

But the judgement of whether a given OTC substance ought to be legally
banned because there's danger when combined with certain Rx drugs is
a political one that I think people are perfectly capable of making.

Banning tryptophan because it's dangerous in combination with Prozac
is like banning Tums because it's dangerous in combination with
tetracycline.

== Bob Yazz ==
-- 

"You can put lipstick on a hog, and call it 'Monique', but it's still a pig."

-- Ann Richards, the wildly popular, Harley Riding Governor of Texas
From: sean+@andrew.cmu.edu (Sean McLinden)
Newsgroups: sci.med
Subject: Re: FDA/ Amino Acids/ Smart Drugs
Date: 13 Sep 92 05:44:26 GMT
Article-I.D.: andrew.oegoKuK00WBOM1Nsp4
	<BuFLvx.CLw@mentor.cc.purdue.edu>
Organization: Carnegie Mellon, Pittsburgh, PA

>In article <1992Sep11.185239.29651@spdcc.com> dyer@spdcc.com (Steve
Dyer) write
>s:
>>In article <BuFErI.3KH@mentor.cc.purdue.edu>
hrubin@pop.stat.purdue.edu (Herma
>n Rubin) writes:
>>>>Tryptophan is off the market because of its association with EMS,
that's >all.
>>>>It has nothing to do with Prozac or any other drug.  Sheesh.
> 
>>>Since it seems that EMS was caused not by tryptophan, but by a contaminant,
>>>and since that contaminant is now tested for, why is it still off the
market?
> 
>>Because, we don't know for sure it was caused by the contaminant, nor is the
>>contamination situation as cut and dried as it's sometimes described to be.
>>It may well be that high dose tryptophan taken as a single entity (i.e.,
>>not as part of your food) can cause EMS in susceptible individuals.
> 
>Nor do we know the contrary.  Nor are we likely to find out unless humans
>try it.  The FDA does no testing of its own.
> 
>Also, more than 99% of the people taking tryptophan OTC were taking doses
>considerably smaller than what was needed to cause EMS even with the
>contaminated tryptophan.  Warnings are appropriate.  Fiats are not.

On the last point, this is (of course) a recurring theme with respect to
the FDA and not one which we are likely to change here.

However, your point about FDA testing underscores what is the real issue
regarding tryptophan, which is the fact that since there is not a lot of
money to be made there, it is really in nobody's economic interests to
do the study. The government may, in fact, do such a study (they may already
be sponsoring one), but I doubt that GNC and other OTC amino acid sellers
realize enough revenue from the sales of tryptophan to justify the investment
in research necessary to demonstrate the safety.

As long as the FDA is able to regulate OTCs, I don't see much changing here.

Sean
Newsgroups: sci.med
From: fod@elroy.jpl.nasa.gov (Frank O'Donnell)
Subject: Reading for prospective dad-to-be
Organization: Jet Propulsion Laboratory
Date: Sun, 6 Sep 1992 15:54:42 GMT

Would anyone have any suggestions for "must" reading for
a prospective first-time father-to-be whose partner has just
found out that she is pregnant?  Material on pregnancy,
childbirth or early childhood parenting would be equally of
interest.

Also, are there any Usenet groups or mailing lists that are
more specifically targeted at these subjects?

Thanks for any responses.

Frank
frank@jplpost.jpl.nasa.gov
Newsgroups: sci.med,sci.med.occupational,news.answers
From: km@cs.pitt.edu (Ken Mitchum)
Newsgroups: sci.med
Subject: "Incompetent doctors" (was Xanax or something)
Date: 8 Sep 92 19:56:16 GMT
Reply-To: km@cs.pitt.edu (Ken Mitchum)
Organization: Univ. of Pittsburgh Computer Science


In article <18ii2jINNe67@agate.berkeley.edu> werner@soe.berkeley.edu (John Werner) writes:

>This is sort of a worst-case
>scenario; he's in the Army and they're stuck seeing mostly
>incompetent Army doctors.

What exactly is the connection? What if I wrote:
This is a sort of a worst-case scenario: he's in business for
himself and they're stuck seeing mostly incompetent private
doctors? I have seen more incompetent doctors in private
practice than anywhere else - perhaps they deserve to be
stereoptyped in this way!

I am reminded of a phone conversation I had with a relative
when I told her I was taking a job with the VA. Her response was
"They don't hire good doctors at the VA." She never saw fit
to question my qualifications before that, but I don't think
she's ever asked for advice from me since.

If you are unhappy with the fact that your choice of physicians
within the military is more limited than you would like, please
state that, rather than to stereotype an entire group of
professionals.

 -km
From: kjell@cse.ucsc.edu (Kjell Post)
Newsgroups: sci.med
Subject: Re: Weight loss => arthritis?
Date: 12 Sep 1992 21:49:33 GMT
Organization: University of California, Santa Cruz (CE/CIS Boards)
NNTP-Posting-Host: arapaho.ucsc.edu

In article <1992Sep11.223956.8483@spdcc.com> dyer@spdcc.com (Steve Dyer) writes:
>In article <18r1b2INNi5q@darkstar.UCSC.EDU> kjell@cse.ucsc.edu (Kjell Post) writes:
>>About a year ago I lost 60 lbs over a period of a few months.
>>My current weight is now 180 lbs which is considered normal for my frame.
>>But now I'm experiencing arthritis-like symptoms: tender feet, swollen
>>toes and fingers etc.  
>>Can this possibly have something to do with the release of toxins
>>from fat cells?  
>
>No.  See your doctor.

I have.  He found that the sedimentation rate in my blood was 11 times
higher than normal and then diagnosed it as arthritis.  He now wants me
to eat Methotrexate.  Needless to say, I am more willing to try alternative 
treatments first.

I'm curious though about your definite No-answer.  How can you be so sure?

--Kjell			kjell@cs.ucsc.edu
Newsgroups: sci.med,sci.med.nutrition,misc.entrepreneurs