HDTenEightyP/NetNews huggingface dataset:
From: alh@einoed.in-berlin.de (Adrian Le Hanne)
Subject: Re: Two-sided CD's *DO* exist! (was Re: Life after CDs)
Organization: Einoed Unix & Netzwerke, Berlin (FRG)
Date: Tue, 28 Jul 1992 11:39:55 GMT

frank@rover.uchicago.edu (Frank - Hardware Hacker - Borger) writes:

>In article <1992Jul27.182147.1332@portal.vpharm.com>, dap@portal.vpharm.com (David A. Pearlman) writes...
>>This isn't the first time Polygram has taken an offbeat road to promote
>>their artists. Around 1980, they issued a couple of promo-only samplers
>>(vinyl LP's) that played from the inside-out (more recently, Capitol took
>>the same route and issued a 12" EP by the group School of Fish that played
>>from the inside out). 

>	Anybody remember who the group was that came out with a 3-sided LP?
>	I remember the technology, but can't remember who did it.

>	Side one was normal, other side contained 2 parallel spiral tracks.
>	Depending on just where you sat the needle, you got two different
>	tunes.

>   Frank R. Borger - Physicist    __       Internet:  Frank@rover.uchicago.edu

The first LP who did such a thing was released by "Brian Giorno's Poetry 
System" and contained three tracks on both sides. Each side thus contained
a piece of Laurie Anderson, Brian Giorno and William S. Burroughs. 
The release that is nowadays sold, hasn't this speciality anymore.

There are very interesting things out on vinyl, as example there is a
Boyd Rice LP (or EP) which contained different locked track loops. The
needle would jump from one loop to another, thus creating random pieces
of music (noise, in the case of Boyd).

Adrian
-- 
Adrian S. Le Hanne        Einoed Unix & Netzwerke, Koepenicker Str.154, D-1000
alh@einoed.in-berlin.de   Berlin 36. Tel.: 030/611 31 26,  Fax.: 030/826 98 75
                                         "Christianity Is Stupid" -Negativland
Newsgroups: sci.electronics
From: ssave@ole.cdac.com (Shailendra Save)
Subject: Re: 8051 help needed urgently!
Organization: CDAC, WA
Date: Thu, 30 Jul 1992 16:51:12 GMT

In article <1992Jul30.070338.6778@uwm.edu> pegasus@csd4.csd.uwm.edu (David R Hucke) writes:
>
>Hi everybody!
>
>Well I finally got my 8051 compatible micro-controller in the mail
>and got it all wired with a crystal and MAX232 chip and reset hardware.
>I had an LED hooked up to port 1 pin 1 with a resistor and connected to
>ground like this:
>So my first program was this:
>setb P1.1  ;; Set Port 1 Pin 1 to 1  This turned on the LED as expected...
>Now my second program was this:
>clr P1.1  ;; Set Port 1 Pin 1 to 0 This should have turned off the LED.. 
>It did not turn off the LED... In fact nothing I do turns the LED off...
>Anybody have any idea what is going wrong?
>When I go into Serial Load mode (RST goes low) the LED still on also.
>Any help would be appreciated...
>pegasus@csd4.csd.uwm.edu                David R. Hucke
>                                        UW-Milwaukee Film Major


   When you clear a port pin, it is pulled to a tristate 1. It does not
put a 0 onto the pin.  I would think you want to write a "0" onto the
port to turn the led off.  Same with RST.


-S
ssave@ole.cdac.com
From: brodie@fps.mcw.edu
Newsgroups: sci.electronics
Subject: Re: SHOCKING STORIES
Date: 27 Jul 92 13:03:23 CST
Organization: Medical College of Wisconsin,  Milwaukee, WI

In article <1992Jul21.185216.26963@oucsace.cs.ohiou.edu>, mcorbin@oucsace.cs.ohiou.edu (Max Corbin) writes:
> 
> Well I couldn't pass this one up.
> 
> In high school power mechanics class someone brought up the question...
> 
> "If everybody forms a line, will everybody get shocked by the spark plug
> wire?"
> 
> My teachers response was  "Lets find out."
> 
> Lucky me I was the guy at the end acting as ground.  It did hurt quite a
> bit, but it was worth watching everybodies arms go flying straight up into
> the air :)

We did this in electronics class in 9th grade.  However, we used a 9V
transistor battery, and one juicy transformer.   In a circle of
about a dozen people, the folks on the ENDS got zapped the worst.
The folks in the "middle" of the human chain didn't get affected as much.

-- 
Kent C. Brodie - Sr. Systems Manager		InterNet:  brodie@fps.mcw.edu
Faculty Physicians & Surgeons			uucpNet:   fps.mcw.edu!brodie
Medical College of Wisconsin			MaBellNet: +1 414 266 5080

"Little bunny FOO-FOO, hoppin' through the forest,
   scoopin' up the field mice and boppin' 'em on the head.."  -childrens song
Newsgroups: sci.electronics
From: whit@milton.u.washington.edu (John Whitmore)
Subject: Re: blue laser
Keywords: blue laser
Organization: University of Washington, Seattle
Distribution: usa
Date: Thu, 30 Jul 1992 00:01:50 GMT

In article <rvk.712340195@wink> rvk@blink.att.com (Bob Kline) writes:

>	Sony announced a blue laser device, with a wavelength of about
>	440 nm.  this might enable a three-fold increase in storage 
>	density.

>	what some sources (e.g., The NY Times ) failed to mention is that
>	the devices work at something like -300 F.

	Presumably this is a solid state laser; there have been blue
gas lasers around for a decade or more (He-Cd), and blue-output lasers
that employ an IR solid-state laser and a tripler (or is it doubler?).
At a guess, the IR/tripler lasers will be the most convenient ones
for future development.

	John Whitmore
Newsgroups: sci.electronics
Subject: re: Laser B'm Pos'r <-Address correction 
From: nwchritton@miavx1.acs.muohio.edu
Date: 21 Jul 92 17:19:36 -0500
Organization: Miami University Academic Computer Service"

To : grant.ranson@outlan.ersys.edmonton...

try nwchritton@miavx1.acs.muohio.edu

thanks everyone,
sorry about using bandwidth
-Neil
From: martin@datacomm.ucc.okstate.edu (Martin McCormick)
Newsgroups: sci.electronics
Subject: Re: SHOCKING STORIES
Date: 22 Jul 92 19:50:43 GMT
Organization: Oklahoma State University, Stillwater, OK

In article <7480@public.BTR.COM> grady@public.BTR.COM ( ) writes:
>Just to take this thread on a morbid twist,
>does anyone know what voltage and amperage
>is used in state executions?

I don't have the references right infront of me, but I remember hearing
the figure 1800 Volts.  I think that it varies from state to state, because
I have heard other voltages and currents stated.  All have been well above
110 or 220 Volts and I believe the power used is around a kilowatt.  I did
read that the shock is delivered in bursts of a minute or so to keep from
cooking the body any more than necessary.
	This brings another question to mind.  Has the Occupational Safety and
Health Administration written guidelines for electrical safety for
electric chairs?  You know, somebody could get hurt in one of those things.

Martin McCormick WB5AGZ   Stillwater, OK
O.S.U. Computer Center Data Communications Group
Newsgroups: sci.electronics
From: pegasus@csd4.csd.uwm.edu (David R Hucke)
Subject: 555 timer question
Originator: pegasus@csd4.csd.uwm.edu
Organization: Computing Services Division, University of Wisconsin - Milwaukee
Date: Thu, 23 Jul 1992 22:08:40 GMT


Hi everybody... again...

Question: What values of resistors and capacitors would I use
to get a 555 timer to pulse every 125 us  (is that milli-seconds?)?

Thanks for the help again...

-- 
pegasus@csd4.csd.uwm.edu                David R. Hucke
                                        UW-Milwaukee Film Major
--
From: francis@cs.adelaide.edu.au (Francis Vaughan)
Newsgroups: sci.electronics
Subject: Re: Shocking stories
Date: 21 Jul 92 09:18:55 GMT
Reply-To: francis@cs.adelaide.edu.au
Organization: Adelaide Univerity, Computer Science


> -=> Nicholas J Feliccia spoke of "Shocking stories" <=-

> Ok. I want to know from the net people. What is the largest voltage
> shock you have ever received (and survived.) I am not talking about

This is probably not a totally sensible question.  The criterion is
too vauge.  Personally I have happily sunk current from a Tesla
Coil generating many hundreds of thousands of volts, but we all know
that that is cheating since the current is miniscule and the skin effect
stops any current flowing anywhere it might do any harm.

A friend of mine was demonstrating a Tesla Coil many years ago
for a TV science show, the coil was driven by a serious induction
coil, one capable of generating a six inch spark at much more
dangerous (that is low) frequencies.  He was wearing a microphone
around his neck and accidentally brushed the wrong part of the
setup, the arc hit his hand, and then used the mic cable as the
rest of its run.  Apparently it hurt quite a bit.  
The current is still too low to be lethal.

What now?  You might define the contest to be one of those that have
survived the most lethal contact with electricity, but one could argue
that since they survived, it couldn't have been a lethal contact :-)

Anyone that has survived a lightning stike must win with no
possible argument.  Lightning is a pretty strange beast however.
People have survived unscathed by the bolt, unscathed that is
except for the burns on one wrist and their thighs.  That is where
their watch and the coins in their pockets melted.

Mind you Marc Evans and his contact with a 44kV line must rate
pretty well.  Not many live to tell of such deeds.



						Francis Vaughan
Newsgroups: sci.electronics
From: kea@cbnewsg.cb.att.com (kevin.e.ahrens)
Subject: VCR repair book recommendation
Keywords: VCR repair book do-it-yourself
Organization: AT&T
Distribution: usa
Date: Wed, 22 Jul 1992 14:57:24 GMT


With all the posts here lately asking for assistance with VCR
repair, I thought I would mention a book I found to be
extremely helpful in repairing my VCR.  The title of the book
is "How to Keep Your VCR Alive" with the subtitle "VCR Repairs
Anyone Can Do," written by Steve Thomas, 2nd Edition,
ISBN 0-9618359-5-8.  The book cost me $24.95 and allowed me
to fix my VCR myself (my problem was the VCR would not play or
fast-forward, pressing either of these buttons caused the machine
to turn on, and after about 4-5 seconds, shut itself off--sound
familiar?).

The book covers all VCR makes except 2 (the manufacturer's of those
models would not provide the author with any information on their models--
the author doesn't state which two but does give a list of all that
are covered and suggests not buying any makes not listed).
The book describes how VCRs work (from a layperson's standpoint),
how to trouble shoot your problem (includes how to make the VCR
work with the cover off and how to make a dummy cassette to fool
the VCR into running) and there is a whole chapter devoted to cleaning
your VCR (probably worth the price of the book by itself).  One
chamois tipped swab which is safe to use to clean the video heads
with is also included.  The trouble location procedure directs
you to the remaining chapters in the book which go into more detail
on the different problems possible for the symptoms and the solutions.
Also of benefit is a discussion on where to get replacement parts and
the part numbers of common replacement parts for all the makes and models
covered in the book (belts, pulleys, idler wheels, etc).  

There is an appendix in the book which gives block diagrams of all makes
and models covered which shows the tape path, placement of the mechanical
parts and gives the replacement part numbers.  Using this appendix, I
found that my RCA VCR is really manufactured by Hitachi.

While this may sound like a plug for the book, it is not.  It is a
book that I used and found to be very helpful in learning about VCRs
and how easy it is to fix most VCR problems.  I found mine at the local
B. Dalton book store.  Maybe your library has it as well.  Check it out
(pun intended).  Has anyone found any other VCR repair books worth-
while?

Almost forgot, the book covers both VHS and Beta's.

Typical Disclaimer:  These opinions belong to me and are not my employer's.
      I am not affiliated with the book publisher or author and have no
      financial gains from this.  I'm just a paying customer who used
      the product and was satisfied with the results.

==============================================================================
 Kevin Ahrens - kea@ihlpm.ih.att.com - AT&T Bell Laboratories, Naperville, IL
Newsgroups: sci.electronics
From: martinn@mksol.dseg.ti.com (niels r martin)
Subject: Where Can I Download Military Soldering Specs??
Organization: Texas Instruments, Inc
Date: Wed, 29 Jul 1992 19:20:24 GMT

I would like to find an FTP site where I can download textfiles of the most
popular Military Solder Specs and Standards.  I am needing in particular such
standards as MIL-STD-2000, 2000A, MIL-P-55110, etc.

I would appreciate any information you might be able to give me.
-- 
________________________________________________________________________________Niels Martin				|                      
martinn@mksol.dseg.ti.com		|  AGM-88  Get out of HARM's way!!
My opinions don't represent		|  10,000+ on-time deliveries!
my employer's--but they're right!	|  Best Radar 'Detector' Around!   
Xref: sparky sci.electronics:13397 sci.materials:550 sci.physics:11742 sci.engr.chem:380
From: sichase@csa2.lbl.gov (SCOTT I CHASE)
Newsgroups: sci.electronics,sci.materials,sci.physics,sci.engr.chem
Subject: Re: PZT Excitation
Date: 27 Jul 92 20:24:26 GMT
Organization: Lawrence Berkeley Laboratory - Berkeley, CA, USA
Distribution: na
Reply-To: sichase@csa2.lbl.gov
NNTP-Posting-Host: 128.3.254.197
News-Software: VAX/VMS VNEWS 1.3-4   

In article <1992Jul27.185909.19949@pbhyg.PacBell.COM>, rhsomer@pbhyg.PacBell.COM (Bob Somers) writes...
> Is there any material that acts as an insulator
>from magnetic forces?  I was told some time ago
>that there is none, but perhaps some new material
>will do this.
>	Bob Somers, Pacific Bell, 510-823-9010

I'm becoming surprised at how often this question gets asked.  An alloy
called Mu-Metal has very high "mu" and so can provide good magnetic
shielding in many situations.  It is expensive and somewhat fragile - 
it can't take alot of banging or extended vibration before the large
magnetic domains get shattered, ruining its shielding ability.

I have used it to shield image intensifier tubes from stray magnetic 
fields of many KGauss with no problems.  Apparently, this stuff is 
well known among HEP grad students, but not in the general physics
community.  Well, I guess we all don't play in strong magnetic
fields all day for the fun of it.

-Scott
--------------------
Scott I. Chase			"The question seems to be of such a character
SICHASE@CSA2.LBL.GOV		that if I should come to life after my death
				and some mathematician were to tell me that it
				had been definitely settled, I think I would
				immediately drop dead again."      - Vandiver
From: holderied@urz.unibas.ch
Newsgroups: sci.electronics
Subject: SCDOWN
Date: 27 Jul 92 15:30:16 MET
Organization: University of Basel, Switzerland

I am currently troubleshooting a circuit, which contains the
following Parts, of which I cannot find datasheets or manufacturers:
Current sources: CIL256, 1N5314, 1N5290
Transistor     : MPSA 12
Can anybody tell me the currents of the current-sources and a source for
those parts?
Thanks       george

George Holderied, Institut fuer physikalische Chemie, Universitaet Basel,
E-mail(see header) or Fax +41 61 2673857

Newsgroups: sci.electronics
From: medin@catbyte.NoSubdomain.NoDomain (Dave Medin)
Subject: Re: What is an IGBT?
Reply-To: medin@catbyte.b30.ingr.com
Organization: Intergraph Corporation, Huntsville AL
Distribution: usa,sci
Date: Wed, 22 Jul 1992 22:53:00 GMT

In article <MOTOYAMA.92Jul20140840@harlgw92.harl.hitachi>, motoyama@harl.hitachi (Hiroshi Motoyama) writes:

|> Can IGBT's amplify audio signal well?  Can they be used for Hi-Fi
|> audio power amplifiers?

IGBT's have been typically slow devices (turn-off), though. Their performance
is not all that linear, either. They do make GREAT switches, though,
at frequencies below 100 KHz where the turnoff time is not a factor.

-- 
 --------------------------------------------------------------------
       Dave Medin			Phone:	(205) 730-3169 (w)
    Intergraph Corp.				(205) 837-1174 (h)
       M/S GD3004
  Huntsville, AL 35894 		Internet: medin@catbyte.b30.ingr.com
				UUCP:  ...uunet!ingr!b30!catbyte!medin

   ******* Everywhere You Look (at least around my office) *******

 * The opinions expressed here are mine (or those of my machine)
From: bonobo@Ingres.COM (David Victor)
Newsgroups: sci.electronics
Subject: Anybody know where to get a Clairex Opto-Isolator?
Date: 21 Jul 92 19:55:06 GMT
Reply-To: bonobo@Ingres.COM (David Victor)
Distribution: usa
Organization: Ask Computer Systems Inc., Ingres Division, Alameda CA 94501

It seems to be some kind of LED/photoresistor combination in a tiny cage...
I haven't seen them advertised in PE or anything.  Any pointers?

Thanks!

-David Victor
From: adrian@cs.hw.ac.uk (Adrian Hurt)
Newsgroups: sci.electronics
Subject: Re: Coax Question
Date: 27 Jul 92 12:50:00 GMT
Organization: Dept of Computer Science, Heriot-Watt University, Scotland

In article <1992Jul22.052519.901@athena.cs.uga.edu> mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
>In article <1992Jul20.140143.19341@yang.earlham.edu> jeremiah@yang.earlham.edu (Jeremiah Wilton) writes:
>>I am wondering what kind of coax is used in Ethernet thin and thick wire 
>>connections.  I am unconvinced that some really expensive special stuff 
>>is necessary.  Might not RG-58 or 59 work for thinwire?  How about 
>>composite video cable (the thin cheap stuff)?
>
>Thinwire Ethernet is RG-58 (52-ohm).

According to my catalogues, there are:
Uniradio M43: 50 ohms, one solid 0.9mm central conductor, braid screen.
RG-58C/U: 50 ohms, 19x0.18mm stranded central conductor, braid screen;
RG-58B/U: 50 ohms, one solid 0.8mm central conductor, braid screen;
Thin Ethernet: 50 ohms, 19x0.2mm stranded central conductor, braid and
foil screen (foil round the insulator, braid round the foil);

The above list is in order of price, cheapest first.  All of them work in
a thin-wire Ethernet network; our network, to be exact.  We took no chances
and used the real, official, genuine thin-wire cable for most of it, but
we have a mixture of the types for leads connecting wall sockets to machines
on desks.  It does not seem to have caused any problems, and we have some
quite long segments.  We also have a neat device called a Cable Scanner,
which sends a pulse down the line and analyses what comes back, and can
also display the results on an oscilloscope; it is basically a cheap time
domain reflectometer.  And I can't see any reflections caused by these
different cables.  Connectors are another matter, though.  Another
department used some sort of insulation displacement connectors called
"Thinnet taps", and they show up nicely.  Stick to BNC connectors.
Preferably crimp connectors.  Not only is it easier to install a crimp
connector than a solder conector, but the crimp types provide better
screening than the solder types I've seen.


-- 
 "Keyboard?  How quaint!" - M. Scott

 Adrian Hurt			     |	JANET:  adrian@uk.ac.hw.cs
 UUCP: ..!ukc!cs.hw.ac.uk!adrian     |  ARPA:   adrian@cs.hw.ac.uk
Newsgroups: sci.electronics
From: rbruce@robocomp.corp.mot.com (Rob Bruce)
Subject: Re: SHOCKING STORIES
Organization: MOTOROLA 
Date: Thu, 23 Jul 1992 02:09:03 GMT

Although this isn't the worst shock I've had, it certainly was painful
and the circumstances rather funny. 

I was talking on the telephone one day while watching TV. I noticed that the 
screen on the TV was pretty dirty and deciced to swipe my hand across it. I had
the phone receiver resting on my shoulder and tucked under my chin to free my
hand to clean the damn thing. One swipe across the screen and my chin discharged
into the telephone handset. Boy did that sting! Not to mention that my friend at
the other end of the line bust a gut from laughing.

-- 


Rob Bruce

+----------------------------------+------------------------------------+
| Don't even *think* of flaming me | e-mail: ATCM56@waccvm.corp.mot.com |
+----------------------------------+------------------------------------+
From: wlsmith@valve.heart.rri.uwo.ca (Wayne Smith)
Subject: High speed / static ram configuration question
Organization: The John P. Robarts Research Institute, London, Ontario
Date: Thu, 30 Jul 1992 02:42:36 GMT


I would like to know what would be the best (static?) ram to use in this
situation...

The memory configuration would be 16 elements wide (possibly expanded to
64) and 256 elements deep (possibly expanded to 4096).  Each element or
address would be 16 bits wide (or 12 bits if 16 bits is a problem).

This memory block would 'grab' it's data from a 16 bit counter 'on the fly'
(either directly or through a latched buffer).  The counter is ticking over
at 32 mhz (or higher?), and the 'grab' does not always correspond with the
clock of the counter.  The minimum time between 'grabs' would be 300 ns
(800 ns more likely).

Dual-ported-ness is not necessary.
High-speed sequential readout will occur at the end of the memory input
cycle (say 200 ns cycle time).

E-mail or post suggestions... thanx!
Newsgroups: sci.electronics
Subject: Zapper
From: Steve_Grant@kcbbs.gen.nz (Steve Grant)
Date: 27 Jul 92 20:59:05 GMT
Organization: Kappa Crucis Unix BBS, Auckland, New Zealand

I would like a copy too!

Steve

Newsgroups: sci.electronics,rec.audio
From: bill@bilver.uucp (Bill Vermillion)
Subject: Re: Life after CDs
Organization: W. J. Vermillion - Winter Park, FL
Date: Thu, 23 Jul 1992 04:11:15 GMT

In article <Brr3A6.5IA@news.cso.uiuc.edu> tmkk@uiuc.edu (Khan) writes:
>
>In article <1992Jul20.192541.1069@access.usask.ca> choy@skorpio.usask.ca writes:
>>CDs are obsolete. What comes next?

>Hmm... Well, LDs are 12" (like records) and analog (like records)...
>Maybe the next generation is a 12" sound-only analog LD. Surely this
>would make the die-hard-vinyl-LP-loving crowd happy? And think of the
>capacity! CLV LDs can cram 60 minutes of video per side. Audio, with its
>much lower bandwidth requirements, could probably fit several hours per
>side.

>Comments?

Comments - how about this.

Sony came up with the idea of digitally encoding audio and put
it on a disk to be read by a laser.

But they never saw the market.  They just couldn't see that
anyone would buy an 'album' with 10 or more hours of music per
side.

They couldn't break themselves of thinking 12" - ala LP's or
LDs.  I took Philips to come up with an under 5" disk.  And
then Sony and Philips got together and standardized on the
current 12cm disk that sped'ed out at 74 minutes.


So - the 12" laser read multi-hour-play disk has been thought
of and discarded for marketing reasons.



-- 
Bill Vermillion - bill.vermillion@oau.org
                - bill@bilver.uucp 
                - ..!{peora|ge-dab|tous|tarpit}!bilver!bill
From: chbl@sbustd.rz.uni-sb.de (Christian Blum)
Newsgroups: sci.electronics
Subject: Re: 25KV (was: SHOCKING STORIES)
Date: 30 Jul 92 11:46:06 GMT
Organization: Studenten-Mail, Rechenzentrum Universitaet des Saarlandes

saouter@irisa.fr (Saouter Yannick) writes:
> Is there anyone here to explain all the ways of dying upon electrical shock (tetanos of
> the heart, burning of the heart or brain ...) ?

It's the CURRENT that damages, not the voltage. They are coupled by Mr Ohm's
simple law U=RI. You see: to get a large I, you'll have to have a low R or
a high U :-). If the power source has a high inner impedance (think of it as
a series resistor), it won't be that worse touching it, since the whole vol-
tages drops on the inner impedance, you get only a low U and (see above).

In short: power sources are dangerous to humans if they are
 - of low inner impedance and
 - of a voltage that is high enough to produce a dangerous current through
   your body.

Chris.
Newsgroups: sci.electronics