HDTenEightyP/NetNews huggingface dataset:
From: karn@servo.qualcomm.com (Phil Karn)
Subject: Another BSR X-10 misfeature
Organization: Qualcomm, Inc
Date: Tue, 1 Sep 1992 07:33:03 GMT


I had such good luck with my last query about fixing a problem in the
BSR X-10 system (the "local on" misfeature in the appliance module)
that I thought I'd try another one.

I have the "telephone response unit". This lets me call up my house
from any touch-tone phone and control BSR X-10 modules. It works
nicely, but it has one annoying misfeature: when it answers the line,
even in "answering machine" mode, it immediately emits three loud
beeps.  Then it waits for a 3-digit security code followed by the
on/off commands.  Then it beeps again.

The initial beeps are highly obnoxious, and it often confuses people
leaving messages on my answering machine. (This got better when I
started mentioning it in my outgoing message, but it's still tacky.)

Of course, the unit should beep to acknowledge an actual command
sequence, but it ought to remain completely silent until then. Has
anyone any insight into this problem?

Phil
Newsgroups: sci.electronics
Subject: Class-E dc-dc converters? 
From: mathiega@elec.canterbury.ac.nz (G. A. Mathieson)
Date: 24 Aug 92 15:53:00 +1200
Distribution: world
Organization: Electrical Engineering, University of Canterbury, New Zealand
Keywords: high power density

Since reading a paper...

"Class-E Resonant Regulated DC/DC Power Converters: 
Analysis of Operation, and Experimental Results at 1.5 MHz"
Redl, R., Molnar, B., and Sokal, N.O., IEEE Power Electronics 
Specialists Conference 1983

...I have developed an interest in Class-E techniques for 
Power Conversion, which mimic those used in Class-E RF 
Power Amplifiers. 
Please share any knowledge you have about Class-E methods,
or how to contact any of the above Authors. In particular, 
Nathan O. Sokal, President Design Automation, Inc., 809 
Massachusetts Ave., Lexington, MA, USA. Ph (617) 862-8998 
(9 year old phone number). 
email me directly, if possible.
GAM
Grant A. Mathieson   


Newsgroups: sci.electronics
From: caro@uni-paderborn.de (Carsten Rose)
Subject: Re: 8051 assembler problems
Organization: Uni-GH Paderborn
X-Newsreader: Tin 1.1 PL4
Date: Thu, 3 Sep 1992 09:57:23 GMT

tobl@sbustd.rz.uni-sb.de (Tobias Blickle) writes:
: In article <1992Aug.10.230409.29929@uwm.edu> markh@csd4.csd.uwm.edu (Hunk) writes:
....cut simething....

: I got this assembler source code but I have a little problem compiling
: it: The compiler looks for the file "sys/timeb.h" when compiling
: the file "io.c". My problem is that I haven't got the file "timeb.h"
: for my compiler and I don't know what it's good for. I'm using the 
: gnu c-compiler.

Look in include/sys/  .

The file is very short, so here it is:

Filename: include/sys/timeb.h
------------------------------------------------------------
/*      @(#)timeb.h 2.6 88/08/19 SMI; from UCB 4.2 81/02/19     */

/*
 * Structure returned by ftime system call
 */

#ifndef _sys_timeb_h
#define _sys_timeb_h

struct timeb
{
        time_t  time;
        unsigned short millitm;
        short   timezone;
        short   dstflag;
};

#endif /*!_sys_timeb_h*/
------------------------------------------------------------

Ciao

	Carsten
From: gately@ra.csc.ti.com (Mike Gately)
Newsgroups: sci.electronics
Subject: Looking for EMPE software package
Keywords: EMPE software tool, radar, propagation, ducting, multi-path
Date: 25 Aug 92 14:24:03 GMT
Distribution: sci.electronics
Organization: Texas Instruments, Plano, TX

I am trying to locate a software package called EMPE, which stands
for Electromagnetic Propagation Effects.  It is used to compute the
multi-path and ducting effects of energy propagated through the 
atmosphere.  Has anyone heard of this and know the name (and address
or phone number) of the company that sells it?

Please reply to me (rather than sci.electronics) at:
	gately@mcopn1.ti.com

Thanks in advance,
Michael Gately           Texas Instruments            (214) 575-5915
From: Robert_La_Ferla@hot.com (Robert La Ferla)
Newsgroups: sci.electronics
Subject: Where can I obtain EIA-232D specifications?
Keywords: EIA-232D (RS-232)
Date: 1 Sep 92 15:02:58 GMT
Article-I.D.: hot.1992Sep1.150258.7990
Reply-To: Robert_La_Ferla@hot.com
Organization: Hot Software

Where can I obtain official and non-official specs on EIA-232D (formerly RS-232  
for you old buzzards)?  I prefer an electronic copy if available.

Thanks,
Robert

Robert La Ferla
Hot Software
From: wayne@r-node.gts.org (Wayne)
Newsgroups: sci.electronics
Subject: Re: Aligning a floppy drive?
Date: 26 Aug 92 12:45:33 GMT
Organization: Public Access UNIX Information System

In article <1992Aug24.200233.27945@iecc.cambridge.ma.us> johnl@iecc.cambridge.ma.us (John R. Levine) writes:
>I have a 3.5" 1.44MB floppy drive on my EISA 486 PC which is getting read
>errors on disks I have reason to believe are good, so I expect that the heads
>are out of alignment.
>
>What's involved in realigning them?  It is my vague recollection that I've
>occasionally seen do-it-yourself alignment kits advertised containing a
>reference disk and some kind of software.  Are they for real?
>

I'd be interested in this information too.
-- 
Wayne Dawe
wayne@r-node.UUCP
From: jet@fokus.gmd.de (J. Tiemann)
Newsgroups: sci.electronics
Subject: Re: Computer on a car battery
Date: 31 Aug 92 10:35:41 GMT
Organization: GMD-Fokus (Berlin)

In article <IISAKKIL.92Aug30164509@vipunen.hut.fi>, iisakkil@vipunen.hut.fi (Mika Iisakkila) writes:
|> jeffn@nuchat.sccsi.com (Jeff Noxon) writes:
|> 
|> >Question 1: How can I power the motherboard?  I am interested mostly in
|> >efficency.  Would 5V regulator ICs do the job as well as anything?
|> 
|> Not really. I worked for a couple of years for a company that made
   [...]
|> that could deliver the rated voltages at as low as 5.2 V of input,
|> although this requires some black magic. Low operating voltages are
|> needed to keep the power supply working properly during engine start,
|> which causes a severe drop in the battery voltage.

There are also high voltage spikes that can damages the voltage regulator
and the computer during engine starts. So you need a good filter (to filter
the high frequencies from this spikes) protect the electronic. The high 
currents during this time (from battery to the engine/generator) can also
confuse your computer, but most trouble comes over the power supply.

|> For your purposes you will probably be happy with a simple step-down
|> switcher, which is easy to implement using a dedicated IC. One of


     Jens        jet@fokus.gmd.de
From: jeff@hpuplca.nsr.hp.com (     Jeff Gruszynski)
Newsgroups: sci.electronics
Subject: Re: Re: What's a good price for a 4 channel 100 MHz analog scope?
Date: 26 Aug 92 22:54:25 GMT
Organization: Hewlett-Packard Neely Golden Gate Area (Northern Calif.)

In sci.electronics, jeff@hpuplca.nsr.hp.com (     Jeff Gruszynski) writes:

I received an E-mail from someone in response to my previous response,
but then I accidentally deleted it ('d' next to 's', shifted home keys
... oh well).  Could you sent it again?  Thanx


Jeff Gruszynski
Semiconductor Test Applications Engineer
From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: sci.electronics
Subject: Re: contact cleaner
Date: 27 Aug 92 01:54:07 GMT
Distribution: usa
Organization: University of Georgia, Athens

I suppose you could make your own, from isopropyl alcohol and
1,1,1-trichloroethane.  (The latter is available at paint stores
as "Carbo-Chlor.")  

I don't know the appropriate proportions.  I do know that 1,1,1-trichloroethane
by itself is not entirely safe on plastics.

-- 
+ Michael Covington - Artificial Intelligence Programs - U of Georgia - USA 
+ Unless otherwise noted, these are private opinions, not official statements.
+ VOTE NO GEORGIA LOTTERY - don't tie education to an unpredictable income.
Newsgroups: sci.electronics
From: titus@calvin.phys.ucalgary.ca (Titus Mathews)
Subject: WATCHDOG TIMER FOR 386 PC/AT
Date: Tue, 01 Sep 92 22:00:55 GMT
Organization: Institute for Space Research

Howdy!  Please excuse me if this is not the correct group to post to.  I am 
in need of a watchdog timer for our 80386 based PC.  What I need is a device 
that will reset the computer, i.e. cause it to reboot, if the device has not
been accessed in some fixed, definable period of time.  Ideally, this device
would be a plug-in card, that has some other functions as well; a couple of 
serial ports in particular.  As I can no longer read this news group very 
often, please send mail to
			 titus@phys.ucalgary.ca
If there are requests to do so, I will post a summary.  Thanks for your help!


T.  =8)
Newsgroups: sci.electronics
From: sdavis@laforge.ksc.nasa.gov (Steve Davis)
Subject: Re: Can 220V 50 Hz Stuff be run on US 220V 60 HZ power  ?
Organization: NASA
Distribution: sci
Date: Mon, 31 Aug 1992 18:44:52 GMT

John Chapman writes:
>>2) A musician's audio power amplifier hand made somewhere in
>>   France. There is a HUGE transformer to step down the AC and
>>   it only has the one 220 v primary winding. Probably needs
>>   250 Watts of power.

Philip Peake writes
> I would be interested to see *any* power supply which needed
> one side grounded ...
> 
> Since all of the equipment described (PC excepted) has transformers,
> there is no problem.

  A word of warning here:  Mr. Chapman didn't mention the specific type of  
musician's amplifier.  It is a common practice for manufacturers of electric  
guitars and amplifiers to electrically connect the guitar strings and bridge to  
the return (shield) of the cable, and to connect this return to ground inside  
the amplifier.  The result is a nice ground plane behind the guitar (formed by  
the musician touching the strings!) that eliminates induced hum.

  This is fine as long as the amplifier is plugged into a properly-grounded AC  
circuit.  But if some roadie wires up the stage power system wrong, it's only a  
matter of time before the guitarist touches something that is really grounded  
while touching his strings.  The results, needless to say, can be tragic.

  To make matters worse, some amplifiers simply connect the signal return to AC  
_neutral_ rather than ground;  That's bad enough for power systems with a few  
annoying ground loops, but it would definitely spell danger if it were the case  
for the handmade amp described above used with U.S. 220VAC.

  The bottom line:  check out the amplifier.  Make sure that the hot AC wires  
don't get past the transformer (internally or externally).  And make sure that  
ground wires are actually connected to ground, and are isolated from the amp's  
neutral.

--
+----------------------------------------------------------------+
| Steve Davis                      | sdavis@laforge.ksc.nasa.gov |
| NASA, DL-DSD-32                  | (NeXT Mail preferred)       |
| Kennedy Space Center, FL  32899  |                             |
| (407)867-7582  fax:(407)867-2173 | #include <disclaimer.h>     |
+----------------------------------------------------------------+
Newsgroups: sci.electronics
From: pdivine@unixg.ubc.ca (Patrick Devine)
Subject: Power Supply schematics / documentation needed
Organization: University of British Columbia, Vancouver, B.C., Canada
Date: Thu, 3 Sep 1992 03:45:25 GMT

Can anyone lead me to some infomation about building a basic power supply?
Perferably in a postscript document.

Thanks in advance.

-- 
|  The Postman Pat Show                featuring  o industrial strength noise |
|  PO Box 75115                                   o clips from all of your    |
|  White Rock, BC                                   favorite tv shows!        |
|  Canada,  V4A 9M4  (send for catalog)           o Loops! & Loops! & Loops!  |
Newsgroups: sci.electronics
From: sap@sactoh0.sac.ca.us (Stephan A. Puga)
Subject: 5V voltage regulator
Organization: Sacramento Public Access Unix
Date: Thu, 3 Sep 92 20:23:18 GMT

I want to power a small circuit with a 9V and I want to use a 5V
regulator that doesn't require all of the extra resistor/capacitor
"settings".  I want just a straight 5V and that is it!

Please recommend something!

-- 
#############################################################
# "Its been surreal!"         #     sap@sactoh0.SAC.CA.US   #  
#     -- Gogo Dodo            # UUCP=..ames!pacbell!sactoh0 #
#############################################################
Organization: University of Maine System
Date: Thursday, 27 Aug 1992 13:37:19 EDT
From: John Hassler <HASSLER@MAINE.MAINE.EDU>
Newsgroups: sci.electronics
Subject: Re: Old laser rejuvenation

In article <1992Aug26.194917.734@cs.ucf.edu>, clarke@acme.ucf.edu (Thomas
Clarke) says:
>
>In article <massoud.57@chemteca.sdsu.edu> massoud@chemteca.sdsu.edu (Massoud
>Ajami) writes:
>> In article <1992Aug26.043710.27944@vpnet.chi.il.us> cgordon@vpnet.chi.il.us
>(gordon hlavenka) writes:
>>
>>
>> >I have an _ancient_ laser which almost works.  It's a HeNe laser,
>> >model 3100 from Gaertner Scientific (circa 1969).  It worked for a
>> >while, but now has developed an electrical problem.
>>
>>
>> You have lost the gas. You woudln't expect helium gas stays in the
>> tube forever?
>>
>About five or six years ago I saw a little article in Applied Optics
>about rejuvenating olf HeNe tubes by putting the tube in a chamber
>with pressurized(?) He for a day or so.  The He would migrate back
>into the tube and after a while the tube worked just like new.
>Probably wouldn't want to overshoot though.  Can pressurize it in
>fairly quickly, but would have to wait years for too much to
>diffuse out again !-)
>--
>Thomas Clarke
>Institute for Simulation and Training, University of Central FL
>12424 Research Parkway, Suite 300, Orlando, FL 32826
>(407)658-5030, FAX: (407)658-5059, clarke@acme.ucf.edu

   Don't need to "pressurize", just need the partial pressure of He to
be greater outside than inside of the laser tube.  I did it once by
putting the laser inside of a garbage bag and filling it with He.  I put
in more He a couple of times a day, as the bag collapsed.  As I remember,
the laser came back to life in a couple of days, and continued to work for
at least several months.
=======================================================================
J. C. Hassler       Dept. of Chem. Eng.        U. of Maine
========================================================================
From: bunky@milton.u.washington.edu (Mike)
Newsgroups: sci.electronics
Subject: universal descrambler mods
Date: 28 Aug 92 06:31:33 GMT
Organization: University of Washington, Seattle


I am trying to find the modifications for the RE universal descrambler
that are posted here from time to time.  Would someone please post them
or Email them to me?

       Thank You

       Mike
Newsgroups: sci.electronics
From: wrb@cbnews.cb.att.com (wallace.r.blackburn)
Subject: Re: 68HC705KICS - Worth of try?
Organization: AT&T
Date: Thu, 27 Aug 1992 13:21:07 GMT

I've been using mine quite a bit - there are a ton of things you can do
with this little guy if you use your imagination.  The system comes with
schematics, and I believe the software is available on the Moto BBS.  Of
course, we would need some way to program the MC68HC705J2 that is part of
the system.  I would be interested in a system to do that anyway!

I'm not sure about the details - for example if you are really "allowed" to
grab the P&E front-end and simulator software without buying the kit.  

One problem for now, though.  You simply can't get the chips!  I have had
my order moved from 9/18 to sometime in October!  I ordered them at the end
of June.  I WELCOME FLAMES STATING SOMETHING LIKE "You're crazy, you can
get scads of them from XYZ".  I'm sure if I'm wrong, the net.brutal.animals
will let me know!

Many distributors don't even carry them yet.  I'm sure these problems will
go away once they've been around awhile.


			Wally Blackburn AA8DX
Newsgroups: sci.electronics
Subject: rf in ac line...help!
From: lunazzi@boifcc.cineca.it (Mauro Andrea Cremonini)
Date: 3 Sep 92 09:43:18 +0100

When I switch on my PC suddenly I hear a lot of noise on my radio. I think that 
the computer is sending RF via the AC line because when I use batteries
insted of ac line power I hear much less noise.
I have been told that it is possible to FILTER the RF by putting something
between the radio and the ac line. Have you any ideas (I'm sure you have !)?                  

|===================================|    /\
|Mauro Andrea Cremonini (IW4BOX)    |   //\\
|Dept. Organic Chemistry            |  ///\\\
|University, Bologna, ITALY         |  \\\///
|e-mail lunazzi@boifcc.cineca.it    |   \\//
|===================================|    \/


Newsgroups: sci.electronics
From: tidedu@lims01.lerc.nasa.gov (WILLIAM DEDULA)
Subject: Mounting a LCD Display NEATLY in a Panel
News-Software: VAX/VMS VNEWS 1.41    
Organization: NASA Lewis Research Center
Distribution: usa
Date: 27 Aug 1992 09:37 EST  


Hello All;
I am preparing to build a project which requires me to mount a Liquid
Crystal Display in a Control Panel. The LCD Display looks like a 
square piece of glass and it plugs into a 40 pin IC socket. I'd like to 
know if anyone has any ideas about how to mount this very professionally. 
One Idea I've been thinking about is to obtain a rummer grommit to put in 
the rectangular hole where the Display will be mounted but up to now, I 
haven't been able to find a source for them, nor do I even know if they 
exist. Does anyone know of a company which sells mounting kits for LCD 
displays or does anyone have any other ideas. Thanks Much !!!

Tim Dedula

NASA Lewis Research Center
Mail Stop 77-3
21000 Brookpark Road
Cleveland, Ohio 44135

Phone: (216) 433-3668


Newsgroups: sci.electronics
From: rubin@chocktaw.cis.ohio-state.edu (Daniel Rubin)
Subject: Re: <<<<<FOR SALE  68030 33MHz. - $300  shipping paid by me
Keywords: 68030
Organization: The Ohio State University Dept. of Computer and Info. Science
Date: Sun, 30 Aug 1992 17:07:25 GMT

>>I have a 68030 at 33 MHz chip.  I need to sell it
>>for $300.  I'll pay shipping.  Nothing is wrong
>>with it, I just can't use it.  I know that the 
>>sample price is around this figure, so it should be a steel
>>at this price.

>Now here is an example of market forces at work.
>Who uses the 68030?  A lot of closed-box-high-priced systems.   
>And we're talking $300 just for the CPU.

I believe this is a terrible price for that chip.  I am sure that you can
get it for a fraction of that cost...

If that is the going rate then what the heck is Motorola doing with that 
chip that is so different from every other chip it makes... Geezzz...

								- Dan
-- 
  Daniel Joseph Rubin    |  "...A good football team for the alumni, parking
rubin@cis.ohio-state.edu |  for the faculty and sex for the students."
      GO        GO       |  - President E. Gordon Gee on the three things that
    BENGALS  BUCKEYES    |  a great university president must provide.....
From: heuring@riker.cs.colorado.edu (Vincent Heuring)
Subject: Spice for the Mac
Organization: University of Colorado, Boulder
Date: Fri, 28 Aug 1992 23:54:34 GMT


Does anyone know of a simple spice implementation for the Macintosh
that is both cheap and system 7 compatible?


-- 
---
 Vincent Heuring   Dep't of Electrical & Computer Engineering
 University of Colorado at Boulder      Boulder CO 80309-0425
 heuring@cs.Colorado.EDU   o) 303-492-8751    h) 303-449-8868
From: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: sci.electronics
Subject: Re: Tv xmission by vhf ra
Date: 30 Aug 92 20:08:56 GMT
Article-I.D.: toz.gate.mT6BqB1w165w
X-Maildoor: WaflineMail 1.00r


     -=> Ben Feen spoke of "Tv xmission by vhf radio?" <=-
    To All at 08-29-92  19:28
 BF> Here's a scenario:
 BF> A VCR's Video line out is connected to the mic input of a VHF radio
 BF> xmitter. A short distance away, a scanner has its earphone output
 BF> connected to a VCR's video input.

 BF> Would this work, and if not, why not?
1:  NO
2:  Because the bandwidth of the video is greater than the
transmitter bandwidth.

        Stephen Cyberman@Toz.Buffalo.NY.US
        Scripted at Sun  08-30-1992  15:35:18

... An Elephant Is Just A Mouse Built To Gov't Specs!
--- Blue Wave/QWK v2.10
Newsgroups: sci.med
Subject: HEPATITIS B / OSHA
From: Nat.Zettel@f414.n154.z1.fidonet.org (Nat Zettel)
Date: 22 Aug 92 14:30:59 GMT
Organization: FidoNet node 1:154/414 - Radio Free, Milwaukee WI

As part of our recent "Bloodborne Pathogens" training we have been given the 
opportunity to get the Hep B vaccine through our employer. Apparently OSHA has 
sent down new rules covering bloodborne nasties - some of the precautions 
include safety glasses for dentists, emergency spill clean-up kits, and the 
Hep B vaccine.
With hundreds of companies scrambling to comply, our plant health nurse told 
me that the vaccine has been in high demand (but short supply) across the 
country.
One of the interesting stats in the presentation on bb path's was
about being stuck accidentally by an infected needle. Don't hold me fast to 
these numbers, but you'll get the gist:
  Needle stick from HIV infected needle -> .5% chance of contracting HIV
  Needle stick from Hep B infected needle -> 30% chance!
If you are subject to potential exposure incidents and are given the chance to 
get the vaccine, it's a no-brainer!
...And remember, let's all be careful out there!

 

--  
Internet: Nat.Zettel@f414.n154.z1.fidonet.org
Newsgroups: sci.med
From: M20614@mwvm.mitre.org (Hugh Pritchard)
Subject: Do Doctors Give a Damn? The Other Health Care Crisis
Organization: The MITRE Corporation, McLean VA 22102
Date: Sun, 23 Aug 1992 16:52:11 GMT

In today's _Washington_Post_ (Sunday, 23 Aug) is an editorial in the "Outlook"
section, entitled "Do Doctors Give a Damn?" and subtitled "The Other Health
Care Crisis," by Leonard Laster ("chancellor emeritus and distinguished
university professor of medicine and health policy at the University of
Massachusetts Medical School").
 
It's much too long to post here, and I don't have the time, anyway.
 
A brief sample of Laster's thoughts:
 
"When I talk about a decline in medicine's culture, I am drawing my evidence
from comments by such groups as:
 
"[]  Patients who think doctors neglect preventive medicine mainly so they
can make more money by treating disease instead of averting it.
 
"[]  Families who view doctors as insensitive to humane concerns when they
try to avoid useless escalation of costs and unnecessary stress to patients
by recommending that their terminally ill, aged parents be allowed to slip
away with less than exhaustive technological intervention.
 
"[]  Medical school faculty who attribute the current drop in the number of
students recruited into family medicine, general internal medicine and
pediatrics to a growing student preoccupation with future income and
'lifestyle' and a declining willingness to sacrifice for patients."
 
Laster's final paragraph:
 
"Our national society does not enjoy such an abundance of idealistic pursuits
that we can afford to trash a single one of them, including compassionate
medicine -- or, perhaps, *especially* compassionate medicine."
 
**  Hugh Pritchard,  hapritch@mitre.org,  703/883-6616