HDTenEightyP/NetNews huggingface dataset:
From: mcovingt@aisun3.ai.uga.edu (Michael Covington)
Newsgroups: sci.electronics
Subject: Grounded soldering iron tip
Date: 5 Oct 92 03:43:25 GMT
Organization: AI Program, University of Georgia, Athens

How important is it to have the tip of a soldering iron be grounded
(as opposed to simply disconnected from everything)?

I use a small grounded-tip iron most of the time, but I have a larger
one, occasionally used for desoldering, which is not grounded-tip.
Should it be?  I can probably modify it by putting on a new line cord.

-- 
:- Michael A. Covington     internet mcovingt@uga.cc.uga.edu 
:- Artificial Intelligence Programs       phone 706 542-0359
:- The University of Georgia                fax 706 542-0349
:- Athens, Georgia 30602 U.S.A.          amateur radio N4TMI
From: george@mech.seas.upenn.edu
Newsgroups: sci.electronics
Subject: Re: Continuous Power
Date: 2 Oct 92 17:41:12 GMT
Organization: University of Pennsylvania, Mechanical Engineering

:  The CRT is the shortest-lived part in the display by a wide margin,

maybe at HP :-)
most of the 'display' failures i've seen have been power supply related.

we are 'nursing' our last-surviving DEC regis-capable terminal
by leaving it on all the time

--
-george            george@mech.seas.upenn.edu
From: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: sci.electronics
Subject: ARchive server for Parts
Date: 3 Oct 92 19:10:02 GMT
X-Maildoor: WaflineMail 1.00r

You know what would be nice is an ARchive server for parts
information, that you could mail a request to, and if it had the
informat ...  it wouldf return it.  Perhaps including diagrams
and use information.  EVEN application notes (if requested).  I
suspect the latter would have to be postscript or something.

    1:  Does this exist?
    2:  If not WHY doesn't it!

You would think that chip manuafacturers could increase sales if
poeple could request information on thier products instantly or
at least VERY rapidly.

        Stephen Cyberman@Toz.Buffalo.NY.US
        Scripted at Sat  10-03-1992  14:17:08

... This is a tagline, this is ONLY a tagline.
--- Blue Wave/QWK v2.10
                                                                                    
Newsgroups: sci.electronics
From: schuster@panix.com (Michael Schuster)
Newsgroups: sci.electronics
Subject: Re: EPROM/PAL PROGRAMMERS
Date: 29 Sep 92 22:08:34 GMT
Organization: PANIX Public Access Unix & Internet, NYC

In article <1992Sep29.122154.19518@ryn.mro4.dec.com> klimasewski@fccvde.enet.dec.com (My name is...) writes:
>
>I would like some comments from users on the following programmers.
>
>POCKET PROGRAMMER - $129.95 (Intronics, Inc.)

Not fancy, but works and works well provided you have a standard parallel
port (especially all grounds connected). Requires adaptor for devices
over 32 pins which would include microcontrollers. Don't have that need
right now.

-- 
_______________________________Mike Schuster________________________________
NY Pub. Access UNIX/Internet: schuster@panix.com | 70346.1745@CompuServe.COM
The Portal (R) System: schuster@cup.portal.com   | MCI Mail,GEnie: MSCHUSTER
From: rkarlqu@hpscit.sc.hp.com (Rick Karlquist)
Newsgroups: sci.electronics
Subject: Re: Grounded soldering iron tip
Date: 6 Oct 92 18:15:08 GMT
Organization: Hewlett-Packard, Santa Clara, CA

In sci.electronics, Michael.Covington@mailbox.bison.mb.ca (Michael Covington) writes:

> Organization: AI Program, University of Georgia, Athens

> How important is it to have the tip of a soldering iron be grounded
> (as opposed to simply disconnected from everything)?

> I use a small grounded-tip iron most of the time, but I have a larger
> one, occasionally used for desoldering, which is not grounded-tip.
> Should it be?  I can probably modify it by putting on a new line cord.

I have found that using unground-tip soldering pencils on CMOS
IC's will blow up the IC *every* time.
From: helfman@aero.org (Robert S. Helfman)
Newsgroups: sci.electronics
Subject: Re: Remote control over the telephone.
Date: 28 Sep 1992 17:14:56 GMT
Organization: The Aerospace Corporation, El Segundo, CA
NNTP-Posting-Host: aerospace.aero.org
Keywords: remote-control, telephone.

In article <Bv80Ho.3uq@ecf.toronto.edu> manuelp@ecf.toronto.edu (MANUELPILLAI Gerald Nishanthan) writes:
>There is an X10-based product which does this. I don't know the details,
>but it allows you to issue touch-tone commands over the phone to a controller,
>which sends on/off commands to the appliance (over the house wiring to an
>X10 module).
>
It's called the Telephone Responder. It runs about $65 and allows
remote control of up to 10 specific unit codes within the house.
I use mine extensively when traveling, to pre-cool (or pre-heat) the
house, warm up the hot-tub, and to power up my computer in preparation
for dial-in via modem.
Newsgroups: sci.electronics
From: Scottl@mot.com (Scott Lindsey)
Subject: Re: 128K MAC, What to do, what to do?
Organization: Motorola Land Mobile Products Sector
Distribution: usa
Date: Mon, 5 Oct 1992 23:08:16 GMT

In article <pevzner.718301416@ceg.uiuc.edu>, pevzner@ceg.uiuc.edu (Vadim Pevzner) writes:
> 
> I've got 128k MAC, one of the chips burnout.
> To fix it may cost upto $100. I also own
> a dotmatr. printer and a modem. What should
> I do with the MAC? Fix it? Upgrade it? Trash it?
> 
> I would I appriciate your advice.
> Send me your mail at pevzner@hp720.ceg.uiuc.edu
> 
> Many-many thanks.
> 
> Vadim
> 
First, glue several superballs to the bottom of the Mac. Then, 
Take it to the belltower on top of Altgeld Hall, drop it, and see if
it bounces.
Newsgroups: sci.electronics
From: sehari@iastate.edu (Babak Sehari)
Subject: Re: Serial Data to 16 bit dig. 
Originator: sehari@vincent1.iastate.edu
Organization: Iowa State University of Science and Technology, Ames, Iowa.
Date: Sat, 26 Sep 1992 05:57:23 GMT

In <1992Sep20.120419@trc.amoco.com> zaew07@trc.amoco.com (Andrew E. Weber) writes:


>I need to design or find a circuit to take serial data and convert it to 16 bits of digital data.

>I would like to send Hex to the serial port and then convert it to the corr. digital
>combination.

>Example:

>send  "00" "00" ========>  00000000 00000000
>      "00" "01" ========>  00000000 00000001
>      "00" "FF" ========>  00000000 11111111 
>      "FF" "FF" ========>  11111111 11111111

>Can this be done?

>Any help would be greatly appreciated.

There are 1000s of ways to do this. Why do not you look up a serial to
Parallel convertor in TTL group.

                       With highest regards,
                            Babak   Sehari.
From: mdanjou@chicoutimi.ulaval.ca (Martin D'Anjou)
Newsgroups: sci.electronics
Subject: CLCC SUCKETS: WHERE CAN I GET THEM?
Keywords: clcc, sucket
Date: 2 Oct 92 16:21:51 GMT
Organization: Universite Laval

Does anybody know where I can buy CLCC suckets, 44 pin?
CLCC is not PLCC compatible.
Martin d'Anjou
mdanjou@gel.ualval.ca
Newsgroups: sci.electronics
From: patw@cserver.plexus.com (Pat Wilson)
Subject: >FCC regulations and telephones
Organization: Plexus Corp. -- Neenah Wisconsin
Date: Mon, 5 Oct 1992 17:39:46 GMT

For hooking a device to the telephone lines, the device must meet
FCC Part 68 guidelines.  What these guidelines are, I am not 
sure.  You can most likely obtain them from the FCC.  
Newsgroups: sci.electronics
From: smlg1015@uxa.cso.uiuc.edu (Stuart M Lichtenthal)
Subject: Multiple Floppy Copying
Organization: University of Illinois at Urbana
Date: Tue, 29 Sep 1992 12:44:50 GMT

Dear sci.electronics:

I'm looking for an inexpensive way to simultaneously DISKCOPY from drive A to
5 other floppy drives.  If you send me your responses, I'll be happy to
post a summary.

Stuart Lichtenthal smlg1015@uxa.cso.uiuc.edu

Newsgroups: sci.electronics
From: rt@iti.org (Robert Tait)
Subject: Re: Are HeNe lasers polarised?
Organization: Industrial Technology Institute
Date: Wed, 30 Sep 1992 20:36:36 GMT

rt
Newsgroups: sci.electronics
Subject: Re: Opening other people's Garage doors :)
From: petrisko@evax2.engr.arizona.edu (William Petrisko)
Date: 5 Oct 92 03:58:19 MST
Reply-To: petrisko@evax2.engr.arizona.edu
Distribution: usa,local
Organization: University of Arizona, College of Engineering and Mines, Tucson

In article <kennehra.718059469@craft.camp.clarkson.edu>, kennehra@craft.camp.clarkson.edu (Rich"TheMan"Kennehan) writes:
>
>Hi.  I was wondering if its possible to construct a garage door
>opener that can broadcast on any frequency you want so that you can
>open other people's garage doors as you drive by :)
>
>- Rich

Awhile back, someone there was a schematic being distributed that was
basically a binary counter that you could wire into an existing garage
door opener (assuming you know the brand/freq) that scanned all of the
possible codes.

I have no idea where to find it or who's idea it was, so don't ask.. sorry.
--
bill petrisko                                  petrisko@evax2.engr.arizona.edu
   aka n7lwo                 ...!uunet!4gen!warlok!gargle!omnisec!thumper!bill
Newsgroups: sci.electronics
From: nagle@netcom.com (John Nagle)
Subject: Re: Sources for Robotics Systems, Kits, Components, and info.
Date: Sun, 27 Sep 92 03:54:31 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: usa

tidedu@mars.lerc.nasa.gov (William T. Dedula) writes:

>Hello All;
>I am a member of a group who is coordinating a Robotics
>Contest for area High School students. Students will build
>minerature Robotics Rovers which will run on a section of
>terrain (designed by middle school students) which simulates the
>surface of Mars. The idea of this project is to design a Mars Rover
>which will explore Mars just as NASA is doing. Points will be awarded to
>the rovers which make it through the course in the specified time limit 
>as well as the rovers which are the lightest weight, and lowest cost.

>I am currently seeking as many sources of Robotics Material as I
>can to provide these students with as many resources as possible
>as they build their Robotics Systems. Primarily, I'm looking for
>mail order corporations, institutions, or individuals who can
>provide the following ...

>1) A source for Minerature TV camera's as well as Minerature
>   video transmitters which operate at low power, utilize low
>   voltage (So they'll operate on the rover's batteries), and are
>   fairly cheap. 

        Try the "VCR Extenders" available at Radio Shack.  These
are actually short-range TV transmitters.  They require a special
receiver, because they don't broadcast in the regular TV bands.
They run on 12v, I think, (normally with a wall transformer),
and aren't too big.  No licence required.  

        Small TV cameras are available from people who sell
security systems, but the going rate is still around $200 for
a black-and-white camera.  Color costs more.  You could lug
around a camcorder, but they tend to be a bit big.

        Another possibility is "LocoVision", from Lionel.  This is a
low-resolution black and white TV system for providing an engineer's
eye view for model trains.  The sensor is the same one used in the old
Fisher-Price camcorder.  LocoVision transmits through the rails using
a carrier-current system, but maybe you could work something out.
This is probably the smallest package you're likely to find.

>2) A good source for Robotics Kits (Particularly Robotics Rovers
>   or cars).

         Radio Controlled Model Car Action.  Try your hobby shop.

         Check out the "Monster Truck" kits, like "Bigfoot".  These
things are designed as rough-terrain vehicles.  If you can get a TV
camera and transmitter on one of these, you'd have a good teleoperated
vehicle.  You might have to put on stronger springs to handle the
weight, but these vehicles have enough power to handle it.  

         Good luck.

					John Nagle
Newsgroups: sci.electronics
Subject: Soil Humidity Sensors
From: ggonzale@mtecv2.mty.itesm.mx (Gabriel Gonzalez)
Date: 30 Sep 92 23:50:35 GMT
Organization: I.T.E.S.M. Campus Monterrey

Hello there!

I'm working in an automatic watering system for this campus, and I need
to know how can I measure the humidity level of the soil. I need to get
an electrical signal representing this parameter. I've searched in
catalogs (like Omegas's) and found nothing. I've thought about measuring
the earths resistance, but found no easy way of doing it. It doesn't
have to be a very accurate measurement, but I need a good (read it
stable) signal to work with. If you can give me any ideas I'll
appreciate it.
We are building up a control system using a DP-31 with a PS; we monitor
the water flow an level of several deposits and wells.
Thanks for your help.

Gabriel Gonzalez (CALVIN)
ggonzale@mtecv2.mty.itesm.mx
From: andrew@alice.att.com (Andrew Hume)
Newsgroups: sci.electronics
Subject: Re: Multimeters
Summary: an alternative
Date: 28 Sep 92 22:45:53 GMT
Article-I.D.: alice.23745
Distribution: na
Organization: AT&T Bell Laboratories, Murray Hill NJ



	for what its worth, i just bought a multimeter for $65
from digikey. it is the bk precision 2704. it is significantly
cheaper than roughly equivalent flukes and has survived modest abuse.
apart from teh normal stuff, it measures capacitance and transistor gain.
i like it a lot.

			andrew hume
Newsgroups: sci.electronics
From: bomr@erich.triumf.ca (Rod Nussbaumer)
Subject: 8051 multitasking kernel, comments please
News-Software: VAX/VMS VNEWS 1.41    
Keywords:  8051 real-time multitasking kernel
Organization: TRIUMF: Tri-University Meson Facility
Date: Fri, 2 Oct 1992 20:16:00 GMT


Kind Sirs:

I am in the market for a real-time kernel to be used in 8051 family
projects.  I have contacted a number of vendors, and am waiting for
their literature packets and demos.  I am wondering if anyone can
comment on any of their experience with these products, or knows of
other products to explore.

My situation is that of a programmer and hardware designer for smallish
embedded system projects used in scientific research applications.  I
have been using the Archimedes C-8051 compiler, and would prefer to 
continue to do so.  Most projects are not limited by memory constraints,
so kernel size is probably not too important.  Performance is also
less important than reliability, fast prototyping and project
completion.  Therefore, I think good documentation and tech support
are quite important.  Price IS a limitation.  Host computer must be
PC compatible, and royalty arrangements are highly undesirable.
Complete source code should be provided.

A list of vendors/products contacted:

A.T. Barrett & Associates, Inc		
	- RTXC Real-Time Multitasking Executive

Byte-BOS Integrated Systems
	- Byte-BOS Multitasking Operating System

CMX Company
	- Real Time Multi-Tasking Operating System

Franklin Software
	- Professional C Developer's Kit, 
		with RXT-51, Real-Time Multi-Tasking

U.S. Software Corporation
	- MultiTask! Exec for 8051


I'd appreciate any comments, either specific to certain products, or
about microcontroller real-time kernels in general.  Thanks, in advance.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  Rod Nussbaumer, Programmer/Technologist       Bitnet: BOMR@TRIUMFER
  TRIUMF --- University of British Columbia,  Internet: bomr@erich.triumf.ca
  Vancouver, BC, Canada.                         Phone: (604)222-1047 ext 510
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Newsgroups: sci.electronics
From: markz@ssc.com (Mark Zenier)
Subject: Re: MC68705P3S,need a programmer
Organization: SSC, Inc.,  Seattle, WA
Date: Thu, 01 Oct 1992 05:15:17 GMT
X-Newsreader: Tin 1.1 PL3

popineau@prunel.ese-metz.fr (Fabrice Popineau) writes:
:  	How can  I duplicate  a 68705P3S ?  I got a Proteus  Universal
: Programmer (from  B&C Microsystems Inc.) and it  doen't seem to  work,
: even for reading.

There must be a way to read them out, because Motorola accepted
68705P3's as masters for the 6805Px series with masked roms,
but it's not documented.

The chip is designed to program itself.  In the normal modes,
the internal EPROM isn't accessable.  And to program it, the
chip uses an internal masked ROM as a program loader.

One way that been discussed here in the past is to put it into
the program mode (but without the programming voltage).  And then
feed it data for the memory image until a programming error occurs, 
change the data in the image for the byte that failed until the byte 
verifies, and then go on to the next byte.  For a maximum of
256 tries for each 1804 bytes.  It could take a while.

Mark Zenier  markz@ssc.wa.com
From: uclyjjd@ucl.ac.uk (Julian Daley)
Newsgroups: sci.electronics
Subject: NiCd fast charging.
Keywords: NiCd fast charge
Date: 6 Oct 92 10:56:29 GMT
Organization: Bloomsbury Computing Consortium

A few months ago I read in a UK trade magazine about
a chip that does all the sensing neccessary for
negative delta V endpoint detection, when fast charging
NiCd batteries.  It also had temperature sensing etc.

I've lost the reference; anyone know who makes it ?

Thanks,
Julian.


--
        _________________________________________________________
       | Julian Daley,                                           |
       | Department Clinical Physics,                            |
       | Guys Hospital, London.                j.daley@ucl.ac.uk |
Newsgroups: sci.electronics
From: hoff@TorreyPinesCA.ncr.com (Mike Hoffman 3732)
Subject: X10 Compatable Thermostats 
Organization: NCR (Torrey Pines Development Center)
Disclaimer: This posting does not neccessarily reflect the opinions of NCR.
Distribution: na
Date: Mon, 5 Oct 92 22:36:27 GMT

Does anybody know of any X10 compatable thermostats.  I already have
the type that is placed under your present thermostat and fools it
by raising the temp by 5, 10 or 15 degrees.

Is there anything out there that is more intelligent.  I guess that
raises another question, How would you use X10 to control the 
thermostat?  Any ideas??

Mike Hoffman
-- 
==========================================================================
NCR Torrey Pines Dev Center | You're only young once, 
                            | but you can be immature all your life. 
 (619) 597-3732             |
 (619) 597-3502 (FAX)       | Email: sv001!hoff@ucsd.edu
==========================================================================
Newsgroups: sci.electronics
From: jafortun@vela.acs.oakland.edu (James Fortune)
Subject: Cars must contain anti-concrete?
Organization: Oakland University, Rochester, Michigan.
Date: Wed, 30 Sep 1992 19:20:11 GMT

Several years ago a woman had her purse stolen at a park near Boston.
She was worried that someone would find her address and car keys in
the purse and steal her car also.  I suggested that she take off the wire
leading to the center of the distributor cap so that any potential
theft would be more difficult.  She called back saying that she did
what I suggested and her car STILL started.  Somewhat dubiously I tried to
verify that she had indeed taken off the correct wire.  She convinced
me that she had, so I decided to go to her place to see what was going
on.  When I looked under the hood, there was the distributor wire about
1.5" from the connector.  Hmmm...  Start the car.  She put the key
in the ignition and I smiled as I saw a cylinder of light blue dart
to the distributor as the car started.

JAF

-- 
James Fortune                  - There are many sides to every question
Oakland University             - until you know the truth.  Then there's
jafortun@vela.acs.oakland.edu  - only one.  --  C. S. Lewis
Disclaimer: Not O.U. opinions  -
Newsgroups: sci.electronics
Subject: Re: Speech Synch IC Source
From: hilbig_t@qis.dofasco.ca
Date: 1 Oct 92 12:22:17 GMT
Organization: Dofasco Inc, Hamilton, Ont. Can.
Nntp-Posting-User: hilbig_t

In article <92271.234135JSG2@psuvm.psu.edu>, Jessica S. Grassmann <JSG2@psuvm.psu.edu> writes:
> Every book I read on speech synthesis claims the SPO256-AL2 is the
> chip to use for phoneme-based synthesis.  The manufacturer is Microchip
> according to _Designing with Speech Processing Chips_, by Ricardo Jimenez, 1991
> 1991.  Note the 1991 copyright!  Microchip says they don't make the
> chip anymore.
> 
> Does anyone know a supplier of any phoneme-based chip?

Radio Shack was selling this chip for several years.  I'm not sure if it is
still in their current catalog but even if it is not you can probably still
find it in many stores.

This chip (**) took the phoneme output id code and produced the speach sound
requiring only a simple amplifier.  Basically, you program has to go through
text and break it down into the correct phonemes which are sent to this chip.
Alternatively,  another chip (**), I think it was a CTS256, would take english
text and break it down in the phonemes for you.  The two chips complimented
each other and require very litter logic to produce a text to sound machine.
Both chips are/were available at Radio Shack.

Radio Shack also sells a design book for all their chips and includes a
practical project for using these two chips.  I remember that there was a
serious error in either this manual or the documents that come with the cips.
If you decide to use the schematic from Radio Shack, send me an E-Mail and I
will look up what the error was (address decode logic or something like that).


 ** Note: I may have the functions of these two chips reversed.


-- 
Thomas Hilbig,
hilbig_t@qis.dofasco.ca
From: j_thiem@pavo.concordia.ca (THIEMANN, JOACHIM)
Newsgroups: sci.electronics
Subject: CEM chips
Date: 4 Oct 92 23:01:00 GMT
Organization: Concordia University
News-Software: VAX/VMS VNEWS 1.41

Hi, All...

	I've tried posting this on rec.music.synth before, or here...
can't remember. Anyways, here goes:

	I am looking for a couple of chips:

	CEM 3310, CEM 3320, CEM 3330, CEM 3340

	They are the following (in that order): ADSR generator,
VCF, VCA, and VCO. (You analog synth-freaks know what I mean).

	I've tried a number of places to get them. I need them for a
synteziser I want to build using the design of Dieter Doepfer published
in FUNKSCHAU Sonderheft Nr.219. As far as I know, the comany is Curtis
Electromusic, and I don't know if they still make them.

	Since this is a pretty active base, please E-Mail your resonse...

	Thank you in advance (whoever you might be...)

-Joachim Thiemann
-EE Ugrad, Concordia University, Montreal, Canada
-"Essener, wo seit ihr?" - something stuck in my mind...
Newsgroups: sci.electronics,rec.autos.tech
From: kmosher@IMD.Sterling.COM (Ken Mosher)
Subject: Re: GM diagnostic harness
Organization: Sterling Software
Date: Thu, 1 Oct 1992 18:50:29 GMT
X-Md4-Signature: f8725440daee7f3e1f9aa8b2b3d8c74a

There is product called 
"Diacom" that uses a laptop PC to display the data dumped at one
second intervals from the ECM.  The reports generated are quite comprehensive.
The cost is around $250-300 for the software and cable.  I have received a
demo version of this software recently and I am impressed.  I'm considering
ordering it, but it would be a lot more fun to write my own program!

Several of us who race Buick GNs find either the Diacom or OTC Scan tools
invaluable in tuning.  I personally use the OTC.

-- Ken Mosher
-- Buick Grand National:  A *BOOST* of Buick Performance!
-- 
Ken Mosher                   UUCP:     uunet!sparky!kmosher                  =
Sterling Software IMD        INTERNET: kmosher@sparky.IMD.Sterling.COM       = 
Buick Grand National: The Surgeon General never said anything about smoking  =
                      the competition!!                                      =
Newsgroups: sci.electronics