HDTenEightyP/NetNews huggingface dataset:
From: norlin@midway.ecn.uoknor.edu (Norman Lin)
Newsgroups: sci.electronics,rec.aviation
Subject: Re: Walkman Modification
Date: 18 Dec 92 23:52:43 GMT
Article-I.D.: constell.BzHBo1.MBw
Distribution: usa
Organization: Engineering Computer Network, University of Oklahoma, Norman, OK, USA

Robert A. Sobczak <SOBCZAK@MAINE.MAINE.EDU> writes:

>In article <BzDEtE.K5K@bcstec.ca.boeing.com>, mce5921@bcstec.ca.boeing.com
>(Martin Emde) says:
>>
>>Does anyone know how to modify a Walkman FM Receiver such that it operates
>>over the 108-136Mhz frequency range (aircraft voice communication) or
>>know if this is even possible?
>>
>Yea, I do.

>First, go buy an AM radio that receives in that range, because that what
>aircraft radios transmit on.

Actually, I read an article a few years back in "Radio Electronics" that
told how to modify an FM receiver to do just this.  I did it, and it
works.  Unfortunately, I can't remember the specifics; however, it involved
adjusting some trimmer capacitors on the main tuning capacitor and decreasing
the inductance (by physically removing turns from) of the FM tuning
coil (which was identifiable because upon touching it, static would
come out of the speakers, and upon releasing it, the static stopped).

I'm not sure how it handled the AM/FM problem, but I do remember it was
addressed in the article.  (Perhaps that was the trimmer capacitor bit;
I really don't remember.)

Perhaps someone else can provide some more information.

Norman
norlin@mailhost.ecn.uoknor.edu
From: mikael@terapin.com (Mikael Andersson)
Newsgroups: sci.electronics
Subject: 68030 / 68040 used chips wanted
Date: 11 Dec 92 17:59:23 GMT
Organization: BBS

I am looking for used but working Motorola 68030/68EC030/68040/68EC040
for my next project. The speed should be above 32 Mhz for 030 and 
20 Mhz for the 040s. 

mikael
Xref: sparky sci.electronics:21251 sci.energy:6305 rec.autos.tech:16989
From: mellob@cary103.its.rpi.edu (Silly Putty)
Newsgroups: sci.electronics
Subject: RE: Ranking the electronics magazines
Date: 14 Dec 92 18:06:00 GMT
Article-I.D.: rpi.+8j2l1a
Reply-To: mellob@rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY.


 

       I read Popular Communications like the bible but i couldn't

	tell you why. It's just an awesome magazine.

	I like Popular Electronics because the projects are SIMPLE to

	build and CHEAP.
 
	I like Radio Electronics/Electronics Now because it's just like

	Pop Elec. Sometimes they run the same articles as Pop Elec. and

	even pull some from QST from time to time.

	QST projects are usually too expensive and complicated for me. Although

	I don't miss the "headlight reminder" type projects.

	But if you want to know what's out there in the market for Amateur

	equipment, you can't beat their devoting 1/2 of every issue to 
	
	advertisements.

 My other favorite subs. are :

	Stereo Review: Very objective product reviews, A manufacturers
 	magazine (some say thats good, some bad). Good magazine to buy 
	if your interested in getting into high-end (expensive) audio gear.

	Audio: Only good for their annual product directory.

	Car Audio and Electronics: Wicked cool articles on pro 
	installations. Being a part-time installer, it gives mea good idea
	of what I'm shooting for. Excellent product reviews. 

	Brett A. Mellor                           mellob@rpi.edu
	Rensselaer Polytechnic Institute
Newsgroups: sci.electronics
From: rcook@gfx.engga.uwo.ca (Richard Cook)
Subject: Request for SHARP LM640 LCD pinout
Organization: University of Western Ontario, London
Date: Sat, 12 Dec 1992 20:50:26 GMT

Greetings!  I have an LCD display from a Radio Shack (Tandy) laptop,
model 1400 or 2800.  Can anyone help me to identify the 10 pin header
connector and its interface protocol?

The board has a label of:   SHARP LM640   MADE IN JAPAN.
I don't have the laptop so I do not even know which pins are its power supply.
Tandy U.S. said they don't carry the service manual for it.

There is no controller on the board, just the display drivers (masked) and two
extra ICs labelled:  LA5316 9L5 and 50003SCC-S 903.

Any help would be greatly appreciated.  You may contact me at the following
e-mail address:   rcook@gfx.engga.uwo.ca

Thank you.
-- 

Richard Cook	(519) 641-1985
Elect. Eng. FAX	(519) 661-3488
From: Ligon@macgw1.ge.com (Woody Ligon)
Newsgroups: sci.electronics
Subject: Re: Flywheel batteries as EV power source
Date: 16 Dec 92 13:51:38 GMT
Followup-To: sci.electronics
Organization: GE-CRD

In article <BzB2Iq.Jqn@wang.com>, pvr@wang.com wrote:
> 
> jeh@cmkrnl.com writes:
> 
>
> 
>  so read the Spectrum article for better information.
> --
> >>>>>>>>>>>> Peter Reilley ..... pvr@wiis.wang.com ..... KA1LAT <<<<<<<<<<<<<
>                      Well, that about says it.

I have often wondered about the gyroscopic effects of flywheel energy
storage.  Do any of these articles discuss gyroscopic stablization of the
vehicle toward flipping over by the inertial effects of the flywheel
storage device?  

If such effects are significant they could be, I suppose, an additional
selling point both in terms of ride quality and safety. 

I am assuming of course that the flywheel axle is vertical and the plane of
rotation is horizontal. 

Also wouldn't it seem that the gyroscopic effects would put terrific
strains on the flywheel bearing systems whenever the car hit a bump in the
road?  And how do you make a bearing strong enough to take that beating and
still be extremely low friction?

This posting is fast turning into a stream of consciousness but it also
seems to be saying that flywheel storage cannot possibly be as simple as it
is being portrayed. 

regards

Woody Ligon
standard disclaimer applies

(ligon@macgw1.crd.ge.com)
From: dag@col.hp.com (David Geiser)
Newsgroups: sci.electronics
Subject: Re: "dumb" pagers
Date: 16 Dec 1992 17:04:47 GMT
Organization: HP Colorado Springs Division
NNTP-Posting-Host: hplsdor.col.hp.com

On second thought, a 'library' type security system might be 
just what you need.

Each box gets its own unique strip -- no active parts, no
batteries, just a computer to keep track of the box and its strip
signature.  Ping the whole pallet and listen for the unique
signature of the wanted box.  Build some df into the listener and
you could ping a whole quadrant or shelf area of the warehouse.
So over all you need the strips, a database manager for the
signatures, and a smart listener that will say yes/no for one
particular signature.


dag
From: thomas@bit.UUCP (Thomas Walter)
Newsgroups: sci.electronics
Subject: INTEL 8052 w/BASIC - is the code public domain?
Keywords: BASIC INTEL PUBLIC DOMAN
Date: 14 Dec 92 22:30:05 GMT
Article-I.D.: bit.533
Organization: BIT, Portland, OR


Did INTEL place the BASIC rom code for the 8052 (8031, etc.) in
PUBLIC DOMAIN?

A friend, who is a High School Teacher, asked if I could make up
some microcontroller boards for some of the students to use. Rather
than use assembly, it would be best if BASIC could be used, to allow
then fundamental idea's be learned. 

Just wanted to check to make sure that the BASIC program is public
domain, so I can place it into EPROM and run it with a $2 8032 uC.

Does INTEL still supply the 8052BASIC chip?

I noticed Unicorn Electronics listed a 8052 BASIC chip for $21.99, but I was
under the impression INTEL had discontinued the part. Only other chip I am
aware of is the MHS 80C52 with BASIC sold by Micromint ($15.00/100).

Please post here, or send email - I'll post a follow up.

Thanks,

Thomas Walter					bit!thomas@cse.ogi.edu
Beaverton, OR.
Newsgroups: sci.electronics
From: hrsafiri@sunee.uwaterloo.ca (H R Safiri)
Subject: UPS
Organization: University of Waterloo
Distribution: na
Date: Sun, 20 Dec 1992 03:13:44 GMT




  I am trying to find some information on UPS and sinosoidal

 invertors with BJT or MOSFET .If anyone has information in

 that area (especially in filtering) please informs  me.


 Hamid

Xref: sparky sci.electronics:20931 sci.energy:6178 rec.autos.tech:16793
From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
Newsgroups: sci.electronics,sci.energy,rec.autos.tech
Subject: Re: Flywheel batteries as EV power source
Date: 17 Dec 1992 06:57:13 GMT
Organization: HST Wide Field/Planetary Camera
Distribution: world
Reply-To: carl@SOL1.GPS.CALTECH.EDU
NNTP-Posting-Host: sol1.gps.caltech.edu

In article <BzE2oz.I4H@ns1.nodak.edu>, csmith@plains.NoDak.edu (Carl Smith) writes:
>I am not going to argue the above point, but consider this.  If you are
>going to measure danger by the amount of stored energy, then which is
>more dangerous when it explodes?  A flywheel that has enough energy to 
>move a car 100 miles at freeway speeds, or a tank of gasoline with enough 
>energy to move a car at greater-than-highway speeds for 300 miles?

The tank of gasoline, of course.  I certainly wouldn't want to be standing
anywhere near a fuel/air bomb using ~8 gallons of gasoline if it went off.  Of
course, should the gasoline ignite after a car's been in an accident, you're
highly unlikely to have much fuel-air mixture that's at explosive proportions. 
That 8 gallons of gasoline will take quite some time to burn off.  The same
can't be said for your flywheel.

>>Unless you wrap the flywheel in a massive enough container that it can absorb
>>all that energy without vaporizing, you're going to have an explosion.
>
>Why bother, we don't wrap our gas tanks in a container that would contain
>their explosion?

There's no way you're going to burn a full tank of gasoline in a fraction of a
second.  The difference in the power of the two explosions in question will be
orders of magnitude.

>The point I am trying to make is that flywheels may be dangerous, but driving
>around with 20 gallons of gasoline strapped to the bottom of your car in a
>thin sheet metal container is A LOT MORE dangerous.

Depends on which is more likely to fail.  If the flywheel fails, you're going
to have a lot more powerful failure mode than if the fuel tank fails.

>But we consider that 
>risk as acceptable considering the convenience that we get from our cars.
>So, why the worry about deriving the same convenience from a lesser danger?
>Because people are not used to doing it every day...

Show me a flywheel which, if it fails, will take on the order of half an hour
to spin down, and I'll grant that your claim has some merit.  However, if your
flywheel spins down in a fraction of a second, it's going to be a lot worse
than a fuel tank rupturing and igniting, unless you've got something that can
absorb all that energy.
--------------------------------------------------------------------------------
Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL

Disclaimer:  Hey, I understand VAXen and VMS.  That's what I get paid for.  My
understanding of astronomy is purely at the amateur level (or below).  So
unless what I'm saying is directly related to VAX/VMS, don't hold me or my
organization responsible for it.  If it IS related to VAX/VMS, you can try to
hold me responsible for it, but my organization had nothing to do with it.
From: aslt@acad2.alaska.edu
Newsgroups: sci.electronics
Subject: Re: Shareware/freeware PCB/schematic-capture programs FTP-able?
Date: 16 Dec 92 03:49:01 GMT
Article-I.D.: acad2.1992Dec15.234901.1
Organization: University of Alaska

I seem to recall, and it's been awhile <insert other disclaimers> that I
had trouble with it crashing, as well, and it turned out what I needed to 
do was to use the -d qualifier, as in 'unzip -d <file>', 
that unzips the directory structure as well as the files.

If I'm off-base, apologies and please ignore.

========================

In article <1992Dec16.012409.25617@eng.ufl.edu>, iqbal@omaha.eel.ufl.edu (M.Iqbal) writes:
> In article <gf_4sDW00iV4M8Vp9a@andrew.cmu.edu>, jmce+@andrew.cmu.edu (James Ryan Miller) writes:
> |> 
> |>     Yeah, I got the PADS stuff off wuarchive.wustl.edu.  It was in
> |> mirror2/msdos/cad.  Unfortunatly, the installation program that comes
> |> with it crashes on everyone's computer I've seen try it.  Basically, you
> |> have to install everything manualy.  If you have any questions with
> |> this, just send me mail.  
> |> 
> |>         Ryan Miller
> |>         jmce@andrew.cmu.edu
> 
> I down loaded PAD a while ago. I did not get a chance to use it 
> but I am sure it uncompresses fine. May be, I can put on our 
> eel-ftp-anonymous site if enough request comes in.
> -- 
> 
> ---------------------------------------------------------------------------
> "If your annual income today is $50,000, you have the same buying power as
> the average coal miner did in 1949, adjusted for taxes and inflation," John
> Sestina, nationally recognized Certified Financial Planner;  quoted in 1987.
>                                             
>       						 >><<<     >>><<<<
> Iqbal@sioux.eel.ufl.edu		 		 (o o)     (o) (o)
> University of Florida				 [ | ]        | 
>                                   		   -         ---
Newsgroups: sci.electronics
From: chess@McRCIM.McGill.EDU ()
Subject: Wanted : Graphics package for drawing cirucits
Originator: chess@kadumu.mcrcim.mcgill.edu
Organization: McGill Research Centre for  Intelligent Machines
Date: Fri, 18 Dec 92 03:08:14 GMT


Wanted 

Graphics package for drawing cirucits
Input : Circuit configuration in SPICE format ( or some other format)
Output: Circuit Schematic in a window
Operating System: Unix/Dos/OS2
Public domain software preferable.

To be used in a real-time simulation where the circuit configuration
will change in time. Thus a new schematic will have to be drawn when
ever the configuration changes.  

Any assistance will be greatly appreciated.

Sandy

(Please send response by email. If there is sufficient interest
I will summarise responses)
-- 
___________________________________________________________________________
|	K.Sandrasegaran(Sandy)		|  Tel : (514) 398-7159 /398-5857 |
|	McGill Research Center for -    |  Fax : (514) 398-4470           |
|	  Intelligent Machines (McRCIM) |  email: chess@mcrcim.mcgill.edu |
From: bb099@cleveland.Freenet.Edu (Adam Trent Phillips)
Newsgroups: sci.electronics
Subject: LOOKING FOR THE FAQ
Date: 14 Dec 1992 19:29:54 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: slc10.ins.cwru.edu


	I used to post on this group a LONg time ago and I 
want to join back in again. I never got the FAQ file for this group.
I do not have FTP access so if someone could mail it to me I would
be very thankfull.

-- 
A. TRENT PHILLIPS |" A mirror is a negative space with a frame and a place for
  also known as   | your face, it reveals what the rest of us see. It conceals
   WHITE  ROOK    | what you'd like you to be."--Blue Oyster Cult
-------bb099@cleveland.freenet.edu-----aa1439@freenet.lorain.oberlin.edu-------
Newsgroups: sci.electronics,alt.cyberpunk
From: carl@SOL1.GPS.CALTECH.EDU (Carl J Lydick)
Newsgroups: sci.electronics,sci.energy,rec.autos.tech
Subject: Re: Flywheel batteries as EV power source
Date: 17 Dec 1992 18:44:31 GMT
Organization: HST Wide Field/Planetary Camera
Distribution: world
Reply-To: carl@SOL1.GPS.CALTECH.EDU
NNTP-Posting-Host: sol1.gps.caltech.edu

In article <1992Dec17.165111.10240@vexcel.com>, dean@vexcel.com (Dean Alaska) writes:
>It seems that the energy would never be more than in a tank of gasoline
>and that it need not be shielded any better than that tank of gasoline
>for it to be considered as an alternative from the perspective of
>safety.  We know how dangerous an exploding gas tank can be but we
>also know that it doesn't explode too often.

Dean, try the following experiment:  Take a fairly small amount of gasoline,
dump it on the ground, and light it (carefully, and preferably from a distance).
Measure how long it takes to burn.  Make an estimate of how long it would take
to burn, say, 10 gallons of gasoline in similar circumstances.  You're probably
going to come up with an estimate of at least 15 minutes (at least you would if
you'd ever seen a gasoline fire).  Now, 15 minutes is 900 seconds.  Assuming
the flywheel had even 1/9 the energy as that found in a tankful of gasoline,
and that the catastrophic failure of the flywheel takes a full second (both of
which are pretty generous assumptions in your favor), then the power generated
by the failure of the flywheel will be 100 times that of the burning of the
tank of gasoline.  Note the critical distinction between total energy and
power.  That flywheel's going to make one hell of a big bang.  And it's going
to do it before anybody has a chance to get away from the car.  The gasoline
explosion's going to be very mild in comparison, though the heat released as
the rest of the gasoline burns non-explosively will be pretty intense.
--------------------------------------------------------------------------------
Carl J Lydick | INTERnet: CARL@SOL1.GPS.CALTECH.EDU | NSI/HEPnet: SOL1::CARL

Disclaimer:  Hey, I understand VAXen and VMS.  That's what I get paid for.  My
understanding of astronomy is purely at the amateur level (or below).  So
unless what I'm saying is directly related to VAX/VMS, don't hold me or my
organization responsible for it.  If it IS related to VAX/VMS, you can try to
hold me responsible for it, but my organization had nothing to do with it.
Newsgroups: sci.electronics
From: toddi@mav.com (Todd Inch)
Subject: Re: Voice-activated circuitry
Organization: Maverick International Inc.
Date: Thu, 17 Dec 92 21:44:01 GMT

In article <92345.151014GNR100@psuvm.psu.edu> GNR100@psuvm.psu.edu writes:
>
>  Just my 2: worth:  I saw a MacGyver rerun last night  in which he
>a serries of wine glasses filled to different levels to generate tones that
>unlocked a safe.  Sounds possible, just using a combination of tones
>instead of a combination of numbers.  When the first tone is picked up,
>wait for the next, when the nexet is recieved, scan for the following tone.

Most/all electronic combination locks have timeouts after too long a pause
between digits/tones, reset if too many digits/tones are entered, etc.
(By tones I'm thinking touch-tones such as telephone response systems.)

If this was supposed to be voice recognition, there would HAVE to be a LOT
more than just simple tone sample decoding, such as duration, rise/fall, etc.

I like MacGyver, but . . .
From: kludge@grissom.larc.nasa.gov (Scott Dorsey)
Newsgroups: sci.electronics
Subject: Re: "The Glob" Atari 2600 processors ???
Date: 21 Dec 1992 03:33:55 GMT
Organization: NASA Langley Research Center and Reptile Farm
NNTP-Posting-Host: grissom.larc.nasa.gov

In article <BzJExG.40D@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes:
>Apart from the possibility of deducing the chip type by studying the rest
>of the circuit, the only way to find out is to get the epoxy off.  That
>is Not Easy.  The stuff is completely inert as far as the usual run of
>solvents etc. are concerned.  It can be done, using truly vile chemicals,
>but it's not the sort of thing you want to try unless you really know
>what you're doing.

You can do it with DMSO.  I have reverse-engineered a number of potted
modules by soaking them in DMSO.  Note that DMSO will also remove the
epoxy board underneath if you aren't very careful about it, and will also
(in the case of more complex modules) remove the coating from resistors
and capacitors making them difficult to read values from.

DMSO is readily available at your local health food store.  Note that the
solution of epoxy in DMSO is lethal and can be absorbed through the skin.
Use with proper ventilation, eye and skin protection.  Very, very nasty
stuff.
--scott
From: pjh@mccc.edu (Pete Holsberg)
Newsgroups: sci.electronics
Subject: Info On Electronics CAD Programs
Date: 20 Dec 92 16:50:57 GMT
Distribution: na
Organization: The College On The Other Side Of Route One

I'm looking for a non-commercial electronics CAD program that I can use
to draw simple schematics (analog and digital), that has a library of
common symbol shapes (resistors, transistors, gates, etc.) so that I
don't have to draw them freehand, and that can save to an MS-DOS
graphics file -- PCX, TIFF, etc.

Thanks, and happy holidays.
From: louis@aupair.cs.athabascau.ca (Louis Schmittroth)
Newsgroups: sci.electronics
Subject: Re: DOES AMERICA SAY YES TO JAPAN? - Off track!!
Date: 18 Dec 92 01:51:33 GMT

dhesi@cirrus.com (Rahul Dhesi) writes:

>In <1992Dec15.214210.19181@oakhill.sps.mot.com>
>rvkl60@aus18a25.sps.mot.com (Tom Mathes) writes:

>>Let's get this discussion back on the REAL message of the
>>original post: the Japanese coordinated attack on industry
>                   ^alleged
>>in the US, and the mercantilistic trading practices of Japan.

>Do you know when the US will get back on track?  When it stops blaming
>Japan.

You don't have to "blame" Japan, just inderstand what Japan has done to
the US, some of it because of American stupidity, but a lot of it because
of the policy of Nippon Ichiban -- No 1 at all costs.  Please read
Clyde Prestowitz' scholarly work, "Trading Places."  You will be
amazed.

>And they would have a LOT to save and invest if they were not paying
>around 60% of their earnings in taxes.  THAT is a real problem.

Bullshit!  Americans pay the *least* in taxes, both federal and state
and municipal of *all* industrialized nations.  Source, Thurow, "Head
to Head" page 269.

Part of the problem is the lack of political will to say NO to Japan!
--
Louis Schmittroth louis@cs.athabascau.ca
NW 1/4 18 67 21 W4 Alberta.
From: mike_d@tfsquad.mn.org (mike diack)
Newsgroups: sci.electronics
Subject: Swapsies ?
Date: Sun, 13 Dec 92 17:50:26 CST
Organization: The Firing Squad public access - mail and news (+1 612 291 2632)

I have rather more LCD displays than i need. These are Optrex
40218 types , 40 characters X 2 lines, no backlight. They have
the standard 14 pin connections, and are dead easy to hook up to
8051 micros (or any other for that matter - just havent tried)
Would happily swap for erasable 87C51s or derivitave devices
Any takers ? EMAIL if interested.
cheers, Mike.

---
mike_d@tfsquad.mn.org (mike diack)
The Firing Squad BBS, public access Usenet mail site. +1 612 291 2632
Saint Paul, Minnesota
Newsgroups: sci.electronics
From: aslt@acad2.alaska.edu
Subject: test - pls ignore
Organization: University of Alaska
Date: Thu, 17 Dec 1992 14:59:24 GMT

test

Newsgroups: sci.electronics,rec.audio,alt.guitar,rec.music.makers.guitar