HDTenEightyP/NetNews huggingface dataset:
Newsgroups: sci.electronics,alt.folklore.urban
Subject: Re: SHOCKING STORIES
From: dogbowl@dogbox.acme.gen.nz (dogbowl)
Date: Wed, 29 Jul 92 06:25:40 NZT
Organization: The Dawghaus BBS

billn@hpcvaac.cv.hp.com (bill nelson) writes:

> moroney@ramblr.enet.dec.com writes:
> : >In article <1992Jul18.175339.10396@newstand.syr.edu>,
> : >
> : > 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 rewiring
> : > a light switch. I am talking about kissing the flyback transformer.
> : 
> : Largest voltage?  Probably one winter when I scuffed my feet across the
> : rug or pet the cat vigorously and touched the doorknob or something...
> : Thousands of volts but no current.
> 
> Yep, voltage means little. Both my high school teacher and I tangled with
> the Tesla Coil that I built. It, in theory, produced 250,000 volts. Of
> course, the current at that voltage measured in the microamps.
> 
> : Worst shock: I had the power transformer from an old tube TV set.  I was
> : testing the filaments of some tubes, and the leads I thought were the 6.3V
> : windings were the ones for the B+ plate supply.  Either 350 volts or 700 vo
> : at a not insignificant current arm to arm, depending whether I grabbed the
> : center tap lead or not. Threw the tube I was testing across the room...
> : I wasn't hurt somehow.
> 
> I still have the burn scars on my right had from shorting out the HV leads
> of a tv transformer. It is also the worst shock I ever received.
> 

a co=worker at a shortwave transitting station I was working at put his 
hand on top of one of the small transmitters while he was tuneing it up.

The RF jumped about 1 foot to his wrist and grounded out thru his other 
arm. Amazingly he survived, but he had very nasty burns right down to the 
bone on one arm. Cooked flesh looks and smells disgusting!


dogbowl at The Dawghaus BBS  ( +64 6 357-9245 )
From: anbo@wuee1.wustl.edu (Albrecht Jander)
Newsgroups: sci.electronics
Subject: Re: SHOCKING STORIES
Date: 21 Jul 92 15:33:20 GMT
Organization: Washington University, St. Louis Mo.

A couple of years back the power feed to our house shorted to the ground
wire, which was grounded through our water pipes.  The effect was that 
the water in the pipes started to boil and the pipe burst.  Unaware of
what had caused the rupture, I tried to shut off the water.  Boy was I
surprised when I discovered what I had always assumed to be the most
perfect ground was suddenly painfully electrified.  I was even more
surprised when shutting off the main breaker to the house didn't keep 
the sparks from flying.  I didn't figure out what had happende until I 
saw that the ground wire was glowing red hot where it entered the house.
Why the h*ll don't they ground those things *outside* of the house???


I read in the paper that some drunk in Germany peed of a bridge and onto
an overhead line for a streetcar.  The guy didn't live to tell about his
experience.  I'm not sure I would want to live through that either.  OUCH!!!


Watch where you pee!!

Albrecht


---------------------------------------------------------------------------
                        Peltier was a cool dude!!
Newsgroups: sci.electronics
From: medin@catbyte.b30.ingr.com (Dave Medin)
Subject: Re: Magnetic tape developer
Reply-To: medin@catbyte.b30.ingr.com
Organization: Intergraph Corporation, Huntsville AL
Date: Thu, 30 Jul 1992 21:47:43 GMT

In article <1992Jul30.001508.1@auvax1.adelphi.edu>, schmidt@auvax1.adelphi.edu writes:
|> In article <1992Jul29.224920.17143@morrow.stanford.edu>, kai@pangea.Stanford.EDU (Kai Lanz) writes:
|> > Bob Butler (butler@vax.sonoma.edu) asked about a magnetic-tape developer
|> > called Kyread...
|> > 
|> > The stuff I used to use was called MAG VIEW magnetic tape track developer.
|> > It was (is?) made by Nortronics Co. Inc. of Minneapolis. It contains
|> > (surprise!) iron powder and Freon (tm).
|> > 
|> > It worked great; unfortunately the propellant's used up in the little can
|> > I have, and I don't know who distributes this stuff or if Nortronics still
|> > exists. Anybody?
|> 
|> They still exist, are a major producer of magnetic tape heads.
|> 
|> Try NORTRONICS COMPANY, Inc.
|>     8101 Tenth Avenue North
|>     Minneapolis, Minnesota 55427
|> 
|>     612 545-0401
|> 
|> This catalog is 9 years old, so the phone # could have changed, but they are
|> still around.  They exhibit at all the broadcast shows.  I don't know if they
|> still make "mag view"  I thought that stuff went out with 2" quad video tape.
|> 
|> John
|> 
|> PS Just looked in the catalog I got the address from.  It lists "PF-601 Magview
|> (r) tape developer, and shows a 4 oz. spray can.  Of course with the
|> restrictions on Freon now, ???

Nortronics is now owned by The Geneva Group in Minneapolis, and has
an 800 number which I don't have at the office... The number is
under Geneva.

 --------------------------------------------------------------------
       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)
Newsgroups: sci.electronics
From: keithl@klic.rain.com (Keith Lofstrom)
Subject: Re: Any LOW power PAL/GALs?
Organization: Keith Lofstrom Integrated Circuits
Date: Mon, 27 Jul 1992 18:27:20 GMT

In article <1992Jul27.025931.6415@ee.ubc.ca> jmorriso@ee.ubc.ca (John Paul Morrison) writes:
>
>I want to use a PAL or equivalent in a low power application.
>So far, the best I've done is a NS GAL20V8, quarter power.
>
>Allegedly this part is CMOS (EEPROM), but I measured about 30 mA
>sucked in, when nothing was clocking it. Doesn't sound like
>CMOS to me (ie  uA standby current).

Mr. Morrison raises a good point - and possibly indicates a needed market.
If you are willing to take a speed and cost hit, there is nothing preventing
the design of microwatt PALs and PGAs.  In fact, if you are willing to 
program the device with a Xilinx-style serial load, such a device could be
built with a number of cheap CMOS processes.  I could probably design a 20V8
style device that would sell for $5 in commercial quantities, with a prop
delay on the order of 100 nanoseconds and a static current drain of 100nA or
so. A mA or so during the 10 msec startup programming cycle.  The device
could be operated on a single 1.2V cell, or a regular 5V supply.   An
EPROM style device will take more voltage, power, and cost.

The market for such a device would be pretty fragmented, though.  What drives
most current markets is computers of various flavors, and those applications
are driven by speed, and are highly similar.  On the other hand, a
low power PAL would have to be targetted at the battery-powered long-life 
medium-volume niches - you would have to talk to a lot of customers to have
enough sales - the marketing and sales fulfillment department would be
expensive.  Still, I have seen a lot of jobs calling for this type of thing.
Anyone want to start a company?  I'll design a couple for a half million in
stock ;-)

For those of you who have a low power problem to solve, and lack rich relatives
to fund a startup, I might suggest contacting SMOS ( a subsidiary of Seiko-
Epson) about their SMC6200 series of processors.  These are essentially
mask-programmable calculator watch processors, intended to draw a few
microamps from one or two cells, run at 32KHz, read small keypads, drive
displays, night illuminators, beepers, etc.   Using this part now involves
a mask program charge, but last time I talked to SMOS they said they would
have an EPROM style part "soon".  Such a part will draw more power, but cost
less in onesies.

Keith
-- 
Keith Lofstrom         keithl@klic.rain.com       Voice (503)-520-1993
KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon"
Design Contracting in Bipolar and CMOS - Analog, Digital, and Power ICs
Newsgroups: sci.electronics
From: tmkk@uiuc.edu (Khan)
Subject: Re: Zapper
Organization: University of Illinois at Urbana
Date: Mon, 27 Jul 1992 17:42:55 GMT


In article <92206.104206HARVEY@SLACVM.SLAC.STANFORD.EDU> HARVEY@SLACVM.SLAC.STANFORD.EDU writes:
>There was a file posted some time ago for a circuit which would allow
>you to control your remote controls from your PC. It was called the
>Xanadu Zapper. Any help locating the file would be appreciated.

Call Xanadu BBS (217/384-2127) and download zapper.zip -or-
Anonymous ftp to mrcnext.cso.uiuc.edu:/video/zapper.zoo

Newsgroups: sci.electronics,rec.video
From: ncc1701@madoka.its.rpi.edu (Mark O. Chadwick)
Subject: Re: Blue Lasers
Reply-To: ncc1701@acm.rpi.edu
Date: Wed, 29 Jul 1992 20:07:42 GMT

rubin@chocktaw.cis.ohio-state.edu (Daniel Rubin) writes:

>Why not just use more than one laser here?  Scan the picture in 2 blocks
>with 2 lasers or 6 lasers for color.  Why stop there keep adding lasers
>until you have got a sharp flicker free image.  Sounds like a great look
>what I built project...

Er, heh, well, due to cost limitations, we couldn't
afford to do that :-)  We _did_ try using beam splitters
and multiple LCD panels, but we still lacked brightness,
and we were still running a small number of vertical
pixels (8? 16? I can't remember).  But ya gotta remember,
if you have to get a lot of lasers, then they have to
be calibrated together.  They may suffer from aging at
different rates (if that's possible-I don't honestly
know).  In any case, they'll cost a lot more, if you have, say
16 lasers for each color!  But you are right, that
would help a lot, especially if you beam split those
lasers into like 256 or more beams...

Anyone want to give me the next 6 lottery numbers so I can
win $5M to try this out? :-)

-Mark

-- 
---
Mark "Emerson" Chadwick -- ncc1701@acm.rpi.edu    chadwickmo@space.laafb.af.mil
From: carmijo@hpnmdla.sr.hp.com (Chris Armijo)
Date: Thu, 30 Jul 1992 15:54:08 GMT
Subject: Re: What's a Mini-Circuits MAR-6?
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: sci.electronics


Re: Mini-circuits MAR-6.

The MAR-6 is a silicon monolithic amplfier.  From the Mini-Circuits
catalog:
	Freq		Gain
	----		----
	100 MHz		20 dB
	500		19
	1000		16
	2000		11

Output power = 0 dBm @ 1 dB compression
VSWR = 2:1 input, 1.8:1 output

DC current = 50 mA

Price = $1.29 (!!)
		    GND
		     |
		     | 
		dot |\
          IN    ----| >---  OUT
		    |/
		     |
		     |
		    GND

To bias the thing up, use an RF choke in series with a resistor on the
output pin.  Choose the resistor to supply 50 mA with the dc voltage
at the output pin set to ~5V.  Make sure to include dc blocking caps
on the inputs & outputs.

By the way, these are just Avantek parts re-packaged for Mini-Circuits.

For more info, contact Mini-Circuits at (718) 934-4500.  Ask them
for a catalog.

Chris
From: klimasewski@fccvde.enet.dec.com (My name is...)
Newsgroups: sci.electronics
Subject: emergency reception,ARI
Date: 23 Jul 92 22:12:00 GMT
Organization: Digital Equipment Corporation



A friend of mine has a Blaupunkt AM/FM cassette car stereo radio with a 
feature called ARI.
The manual describes ARI as a method of receiving emergency 
traffic messages. The manual also states that Selected FM 
stations in many areas of the United States and Canada broadcast 
these messages.

I took a look at the schematic and it appears to be a 57KHz 
sub-carrier similar to the 67KHz and 92KHz SCA sub-carrier 
signals used by many FM stations.

I am wondering if by tuning the 57KHz adjustment coil would it be 
possible receive SCA signals at 67 or 92KHz??

The earlier ads for the Philips DC-777 Car Stereo with cassette 
and shortwave also advertised this ARI feature. Anyone own one
of the earlier DC-777 try to receive SCA broadcasts by retuning
the 57KHz circuit??

                                  Ken
Xref: sparky sci.electronics:13471 comp.sys.ibm.pc.hardware:20484
From: jmd@bear.com (Josh Diamond)
Newsgroups: sci.electronics,comp.sys.ibm.pc.hardware
Subject: Re: Airport X-Rays
Date: 28 Jul 92 16:30:06 GMT
	<1992Jul23.115038.5296@werple.pub.uu.oz.au>
	<BrwMMA.6rG@news.cso.uiuc.edu>
Organization: Bear, Stearns & Co. - FAST
In-reply-to: dvsg0223@uxa.cso.uiuc.edu's message of 24 Jul 92 17:44:33 GMT



In article <BrwMMA.6rG@news.cso.uiuc.edu> dvsg0223@uxa.cso.uiuc.edu (David Salamon) writes:

   >The X-rays themselves won't do any damage, unless you're carrying something
   >like 1000ASA photographic film, but they use pretty hefty electromagnets
   >to focus the beam, so I never trust floppies or tapes in them, just in case.

   If there are magnets in those X-ray machines, they are most likely in the 
   motors running the conveyer belt.

Don't forget the large transformers, and the large current needs of
X-ray machines.  These generate some pretty strong magnetic fields!!


					Josh Diamond
					AKA Spidey!!!


--
 /\ \  / /\  Josh Diamond                              		   jmd@bear.com
//\\ .. //\\ AKA Spidey!!!                        ...!ctr.columbia.edu!ursa!jmd
//\((  ))/\\
/  < `' >  \          Beauty is the purgation of superfluities. -- Michelangelo
Newsgroups: sci.electronics
From: schmidt@auvax1.adelphi.edu
Subject: Re: FM subcarrier encryption
Organization: Adelphi University, Garden City NY
Date: Fri, 31 Jul 1992 05:12:29 GMT

In article <bs60w8.dcy@wang.com>, dbushong@wang.com (Dave Bushong) writes:
> klp@doe.carleton.ca (Ka Lun Pang) writes:
> 
>>Hi folks,
> 
>>A friend of mine in Toronto told me about that foreign language radio stations
>>in that city use some sort of "FM subcarrier" for broadcasting. The signal
>>has to be received by special made radio sold by the stations.
> 
>>Does anyone have more detail on this kind of operation?
>>Maybe someone in Toronto can tell me more about the technical side of this
>>story.
> 
> Look for information on something called "SCA".  It's usually the
> stuff that people call "elevator music."
> 
> Dave
See several postings in rec.radio.shortwave on the same subject, including one
I wrote, which I will not repeat here.  If you can't get that newsgroup, let me
know, and I'll e-mail you a copy.

John



> -- 
> ==========================================================================
> Dave Bushong, KZ1O@K1UGM.MA         +    No .sig, no tattoo, 
> Wang Laboratories, Inc.             +        no bald spot, no nothin!!
> Internet: dbushong@wang.com         +-------------------------------------
> Project leader, OCR Products        + (reserved for future expansion)
-- 
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
John H. Schmidt, P.E.              |Internet: schmidt@auvax1.adelphi.edu
Technical Director, WBAU           |Phone--Days     (212)456-4218
Adelphi University                 |       Evenings (516)877-6400
Garden City, New York 11530        |Fax-------------(212)456-2424
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
From: thad@btr.BTR.COM (Thaddeus P. Floryan)
Newsgroups: sci.electronics
Subject: Re: Gerber previewers / converters
Date: 21 Jul 92 11:47:59 GMT
Distribution: sci
Organization: BTR Public Access UNIX, Mountain View CA

In article <1992Jul20.164626.8948@leela.cs.orst.edu> forbesm@atlantis.CS.ORST.EDU (Mark Forbes) writes:
>iisakkil@vipunen.hut.fi (Mika R Iisakkila) writes:
>>Has anyone met any (preferably free) software to preview Gerber
>>photoplot files or convert Gerber to other graphics formats?
>
>GC-PREVUE is available for free download from Graphicode. 
>Their BBS is 206-771-6980.
>[...]

Is that "GC-PREVUE" an executable?  For {DOS, MacOS, UNIX, ???} ?

Or is it source which one can compile for one's own system?


Thad Floryan [ thad@btr.com (OR) {decwrl, mips, fernwood}!btr!thad ]
From: whit@milton.u.washington.edu (John Whitmore)
Newsgroups: sci.electronics
Subject: Re: RS-422A and RS-423.  Whats the diff?
Date: 23 Jul 92 03:34:28 GMT
Organization: University of Washington, Seattle

In article <92Jul21.174720.26587@acs.ucalgary.ca> sepa@enel.ucalgary.ca (Michael Sepa) writes:

>What exactly is the difference between an RS-422A and an RS-423
>standard?  Are they as close as their numbers seem to indicate?

	RS-422 is a differential send/receive serial standard,
that employs signalling levels in the range of 0V to 5V.  Since
the signal is differential, there are TWO signal wires for SEND
and TWO signal wires for RECEIVE.  This has no need for any
power supplies other than 5V, and is not EIA-232D-compatible.

	RS-423 is a single-ended serial standard, that employs
signalling levels in the range (usually) of -5V to 5V.  There
is one SEND wire, one RECEIVE wire, and one SIGNAL GROUND wire.
This is completely compatible with EIA-232D.

>The reason I'm asking is that I read that the NeXT machine uses
>the RS-423 standard for its serial communications.  The HP
>deskwriter I own uses the RS-422A standard so it can talk to
>Macintoshes.  

	Macintosh serial ports are RS-423; they can RECEIVE
RS-422A signals correctly, but the output voltages go negative,
so it DOESN'T meet the RS-422 voltage limits.  The ports are
differential (for RS-423, one ignores the extra output line,
and connects the extra input line to SIGNAL GROUND), and will
undoubtedly work with some RS-422 implementations.  Various
versions of the Mac hardware manuals claim the ports are RS-422
and/or RS-423; don't trust the manuals.  I think (but my NeXT
manual is unclear on this point) that the NeXT ports are electrically
identical to the Macintosh ports except for pin #7 on port B
(which the Mac has various functions for, depending on the model-
the NeXT gives +5V power on that pin).

	John Whitmore
Newsgroups: sci.electronics
From: steve@nuchat.sccsi.com (Steve Nuchia)
Subject: Re: SHOCKING STORIES
Organization: South Coast Computing Services, Inc.  Houston
Date: Wed, 22 Jul 1992 21:35:47 GMT

In article <1992Jul22.173218.26194@unx.ucc.okstate.edu> martin@datacomm.ucc.okstate.edu (Martin McCormick) writes:
>startled me.  The 200uf capacitor really nailed me and what's even better,
>it still made a big spark when I shorted it out later so as not to get hit

I built the input stages of a 2KVA modular multi-output battery-backed
power supply for a school project ...  The 110VAC went through a big
choke and a bridge into a bank of six 2000 uFd electrolytics.  It never
bit me but it did evaporate about an inch of multimeter probe on one
occasion.  The fool thing takes about five minutes to discharge through
a 5-watt resistor.  Trying to do it with a screwdriver is not advised :-)
-- 
Steve Nuchia      South Coast Computing Services, Inc.      (713) 661-3301
Newsgroups: sci.electronics,alt.folklore.urban
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: SHOCKING STORIES
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Sun, 26 Jul 1992 09:23:16 GMT

moroney@ramblr.enet.dec.com writes:
: >In article <1992Jul18.175339.10396@newstand.syr.edu>,
: >
: > 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 rewiring
: > a light switch. I am talking about kissing the flyback transformer.
: 
: Largest voltage?  Probably one winter when I scuffed my feet across the
: rug or pet the cat vigorously and touched the doorknob or something...
: Thousands of volts but no current.

Yep, voltage means little. Both my high school teacher and I tangled with
the Tesla Coil that I built. It, in theory, produced 250,000 volts. Of
course, the current at that voltage measured in the microamps.

: Worst shock: I had the power transformer from an old tube TV set.  I was
: testing the filaments of some tubes, and the leads I thought were the 6.3V
: windings were the ones for the B+ plate supply.  Either 350 volts or 700 volts
: at a not insignificant current arm to arm, depending whether I grabbed the
: center tap lead or not. Threw the tube I was testing across the room...
: I wasn't hurt somehow.

I still have the burn scars on my right had from shorting out the HV leads
of a tv transformer. It is also the worst shock I ever received.

Bill
From: adams@chuck.dallas.sgi.com (Chuck Adams)
Newsgroups: sci.electronics
Subject: Re: uv watch
Date: 27 Jul 92 21:26:31 GMT
Organization: Silicon Graphics, Inc.

In article <1992Jul24.180929.20034@midway.uchicago.edu>, betsy@rainbow.uchicago.edu (Betsy Weatherhead) writes:
|> 
|> I'm sure I'm not crazy.  About four or five years ago I saw a 
|> watch for sale that measured uv radiation--or so it claimed.
|> I told some friends in the field this and was told I was
|> crazy.  Does anyone know anything about this watch?  Does
|> anyone have one?  Who is the manufacturer?  Are they still
|> available?
|> 
|> I have tried on my own to trace this down.  I've gone to the
|> consumer electronic show here in Chicago, and got a major
|> run around.  I've checked with several local stores to no
|> avail.  Any recollections of this watch will help me.
|> 
|> 
|> -- 
|>                               O             betsy@rainbow.uchicago.edu
|> _          __                  \            
|>   \      /    \       -- >      O           E. C. Weatherhead
|>    \ __ /      \ __ /          /            5734 S. Ellis  Chicago, 60637

Seiko had 7 to 8 years ago a Solar powered watch.  Sold for under $15.00
at your local department stores.

It had a small solar panel and LCD display.  it had NO internal power
supply, but stored the energy from the solar panel (very small by the
way).  it took about 2 minutes in bright light to charge and used
ambient light to stay charged.

you could put the watch in the closet and leave it for a couple of days
and then remove it.  it would still have the correct time.

it had soft rubber watch band and was all one piece.  didn't do too well
as it wasn't a rolex.  :-)  didn't go too well with evening gowns with
diamonds and didn't go well with tux and tie.  :-)

anyone still own one?


this watch did not measure uv radiation, but might have been mistaken
for same.

has anyone seen the uv meters used by radio/tv stations they use
to measure uv radiation on sunny days to warn sun bathers of radiation
levels, i.e. 15 minutes to serious sunburn for fair skinned individuals?
looks like one or more individuals could get rich by making version (cheap)
to sell with your sunscreen for the beach.  my idea and my patent pending.

ciao,

-- 

   Chuck Adams, Southern Education Center
   Silicon Graphics, Inc.
   15280 Addison Road, Suite 100
   Dallas, TX  75248

   (214) 788-0957 (fax)
   (214) 788-4122 (voice)
   
   K5FO @ 65wpm cw ---  adams@sgi.com

--------------------------------------------------
Heisenberg may have been here.  *
Newsgroups: sci.electronics,rec.video