HDTenEightyP/NetNews huggingface dataset:
From: austin@skorpio.usask.ca (Alvin Austin)
Subject: **WANTED**: Eprom Hex Format Specs
Followup-To: From: austin@skorpio.usask.ca (Alvin Austin)
Keywords: EPROM HEX
Organization: University of Saskatchewan, Saskatoon, Canada
Date: Thu, 15 Oct 1992 22:59:44 GMT

I am looking for a specification for the following data
formats, which are often used with Eprom burners and 
cross assemblers.

	Intel 86/88
	Tektronix
	Motorola S19/S29/S37
	Intel Hex format

If you have information on any of these data formats,
can you email me please:  austin@cs.usask.ca

Thanks very much!

Alvin
-- Alvin Austin, Department of Computational Science
-- University of Saskatchewan, Saskatoon, Canada
-- austin@cs.USask.Ca
From: kharstin@MtHolyoke.edu (Ken Harstine)
Newsgroups: sci.electronics
Subject: Re: >FCC regulations and telephones
Date: 9 Oct 92 01:36:21 GMT
Organization: Mount Holyoke College
X-Newsreader: Tin 1.1 PL5

We'll try this one more time.

The complete CRF 47 which comes in various parts, you need part 68, is
available from the: 

U. S. Government Printing Office
Superintendent of Documents
Washington, D. C.  20402

The cost is about $20.00.  It has all of the details about the required
interface characteristics.
From: rky57514@uxa.cso.uiuc.edu (Tall Cool One )
Newsgroups: sci.electronics
Subject: PSpice Libraries
Date: 11 Oct 92 19:04:02 GMT
Article-I.D.: news.Bvz0yr.2Bq
Organization: University of Illinois at Urbana

Hi,

	Does anyone know if there are anonymous FTP Sites for PSpice?  I have
	the evaluation copy for Windows, and you can't do a whole lot with the
	libraries they give you..  Is there a "registered version"?  How much
	is it?  Thanks for any information!
Newsgroups: sci.electronics
From: hunter@oakhill.sps.mot.com (Hunter Scales)
Subject: Re: Sam's Photofacts
Organization: Motorola Inc., Austin, Texas
Date: Fri, 9 Oct 1992 16:27:48 GMT

cab@col.hp.com (Chris Best) writes:

>Not a secret at all.

>> 1-800-USA-SAMS, or order through Radio Shack.

>Could be, but the number that worked for me a few months ago is:
>(800) 428-7267, customer service.

	Well, I called 1-800-USA-SAMS and it is the phone number
	of a chemical company.  I then called enterprise information
	and SAMS is not listed.  I called the above mentioned customer
	service number and was told that SAMS had been bought by
	Prentiss-Hall.  Their phone is 1-800-428-5331.  The woman I
	spoke to there said the book I wanted "Electronic Music Circuits"
	was out of print as are *most* of the technical books. (I didnt
	know SAMS published anything *but* technical books).
	I then called 5 of our local Radio Shacks.  One admitted to
	knowing was SAMS was but didnt have the book I wanted.
	If anyone knows where I can get it or any book on theremins,
	please let me know.  Thanks.


-- 
Motorola Semiconductor Inc.             Hunter Scales
Austin, Texas                           hunter@prometheus.sps.mot.com
#include <disclaimer.h>
Newsgroups: sci.electronics
From: finneyk@seanews.akita.com (Ken Finney)
Subject: Re: NiCd fast charging.
Organization: SEANEWS - Seattle Public Access News & Mail
Date: Thu, 8 Oct 1992 15:28:33 GMT
Keywords: NiCd fast charge


Maxim has just come out with the nicad charger chips you mention,
MAX713 is the basic part number.
From: pauls@trsvax.tandy.com
Newsgroups: sci.electronics
Subject: Re: Need info on Xtor : B1010
Date: 15 Oct 92 19:49:00 GMT
Nf-ID: #R:cs.ruu.nl:20971:trsvax:288200024:000:206
Nf-From: trsvax.tandy.com!pauls    Oct 15 14:49:00 1992


Checking D.A.T.A. 1991 transistor book.....

It's most likely a 2SB1010 from Rohm:

VbrCEO = 32 Volts
hFE = 390
Icmax = 3 amps
fT = 100Mhz
Its a to-92 PNP device

pinout = E C B

no replacement suggested.
From: pauls@trsvax.tandy.com
Date: 12 Oct 92 16:49 CDT
Newsgroups: sci.electronics
Subject: Re: Max699 ( what is this for? )
Message-ID: <288200016@trsvax>
Nf-ID: #R:Isis.MsState.Edu:718651549:trsvax:288200016:000:102
Nf-From: trsvax.tandy.com!pauls    Oct 12 16:49:00 1992


max699 - low power power-on reset and watchdog controller.
call 800-998-8800 for samples/data sheet.
From: peter@rnihdz.rni.sub.org (Peter Haaf)
Newsgroups: sci.electronics
Subject: Programmer
Date: 11 Oct 92 11:48:10 GMT
Reply-To: peter@rnihdz.rni.sub.org
Organization: Sun Microsystems

Hi,

i want to buy an Eprom/PLD programer that is NOT PC based. 
But this turns out to be difficult. Either the programmers are PC based
or very expensive. I need it only for private purposes.

So my question: is there a standalone programer on the market which is also
affordable ? It should be able to program eproms up to 27010, emulate the eproms
and finaly program PLD like 22V10 (EP910 would be nice).

There was a device the Dataman S3 which did what i want, but it is not available
any more and there new model the S4 can't program PLDs. If you have one
and want to sell it, please make me an offer.

I would appriciate any information.

Thanx in advance

Peter

+-----------------------------------------------------------------------------+
| Peter Haaf				email: peter@rnihdz.rni.sub.org	      |
|					voice: +496221809111	              | 
+-----------------------------------------------------------------------------+
From: drp40@cd.amdahl.com (Doug Puchalski)
Newsgroups: sci.electronics
Subject: Re: variable speed/pitch cd decks modification?
Date: 14 Oct 92 18:08:10 GMT
Reply-To: drp40@cd.amdahl.com
Organization: Amdahl Corporation, Sunnyvale, CA

. I am looking for a way to modify a cd player to be able to vary the
. pitch approx +/- 10%.   I am hoping for there to be a potentiometer in
. the unit that is used for factory adjustment to specs...

I asked this question on the net a year or two ago and someone said
that Denon had a player out there with a pitch control on it.  I never
saw one though.  Perhaps it was a "studio" type player?  I say that because
I doubt they would market such a player for normal home usage--there just
wouldn't be a demand for it.

-- 
Doug Puchalski						   Death to all smileys
drp40@cd.amdahl.com
dpuchals@engin.umich.edu
From: andrew@alice.att.com (Andrew Hume)
Newsgroups: sci.electronics
Subject: Re: Stumped by op-amps
Summary: source for ssm-2015
Date: 8 Oct 92 06:03:22 GMT
Article-I.D.: alice.23836
Organization: AT&T Bell Laboratories, Murray Hill NJ



	the newark catalog lists ssm-2015's for $5.90 or so.
they have an 800 number that i forget but there are a couple of'
outlets near you at 408-262-0121 (milpitas) 408-559-6900 (san jose).
Newsgroups: sci.electronics
From: martin@datacomm.ucc.okstate.edu (Martin McCormick)
Subject: Re: flouresent lighting
Organization: Oklahoma State University, Stillwater, OK
Date: Mon, 12 Oct 1992 16:25:14 GMT


The question was asked as to whether a flourescent light would work on DC.
Yes, it would.  The low-pressure mixture of Argon and Murkury vapor would
glow in UV, just fine, and there would be none of that flicker that people
notice, but getting the 750 volts or so to ionize the vapor mixture would
be a trick.  You would either need lots of batteries or a DC/DC converter to do the job.  Inside a DC/DC converter, one finds a chopper circuit and step-up
transformer, a rectifier diode or diodes, and a filter capacitor.  In an
ordinary flourescent lamp, one finds an autotransformer called a ballast,
possibly a starter to apply heat to the cathodes at each end of the tube,
and the tube, itself.  The flourescent tube is actually its own rectifier,
but each end of the tube takes turns being a cathod or annode depending upon
which way the polarity is going.  Unless the flicker of the tube running
on AC was unacceptable, there would be no good reason to run one on DC.

Martin McCormick WB5AGZ   Stillwater, OK
O.S.U. Computer Center Data Communications Group
From: ginger@hydrus.trl.OZ.AU (Jeremy Ginger)
Newsgroups: sci.electronics
Subject: halogen lamps and infra-red emission
Keywords: halogen infra-red
Date: 16 Oct 92 05:56:26 GMT
Organization: Telecom Research Labs, Melbourne, Australia


Hi everyone,

I was "told" that halogen lamps emit infra-red rays.
If so what sort of effect do they have on humans,
animals etc.
I have been trying to get more information on this but haven't 
had much success. 
Could someone out there shed some light on this.
Thanks
Jeremy
***********************************************************************
Jeremy Ginger                              Internet: j.ginger@trl.oz.au
Telecommunications Research Laboratories of AOTC    Tel: +61 3 253 6638
P.O.BOX 249, Clayton, Victoria 3168, Australia.     Fax: +61 3 253 6144
From: sant_m@cho006.cho.ge.com
Newsgroups: sci.electronics
Subject: Detecting Video Black ?
Date: 14 Oct 92 14:49:07 GMT
Organization: GE Fanuc Automation, North America



I am looking for a simple way to detect the presence or absence of
a video black signal coming out of my VCR.

I want to put the VCR into pause, then single frame advance until I
hit the first frame of something on the tape that isn't video black..

Is there an easy way to do this ?


Martan
Newsgroups: sci.electronics
From: schaerer@isi.ethz.ch (Thomas Schaerer)
Subject: Re: Can I use 1 power supply instead of 2 9-vo
Organization: Swiss Federal Institute of Technology (ETH), Zurich, CH
X-Newsreader: TIN [version 1.1 PL6]
Date: Fri, 16 Oct 1992 07:59:50 GMT

Mike Fox (exumfox@exu.ericsson.se) wrote:
: 
: In article 23610@netcom.com, kehoe@netcom.com (Thomas David Kehoe) writes:
: 
:   My op-amp prototype uses two 9-volt batteries, to supply
:   +9 volts, -9 volts, and ground.  It requires new batteries
:   after 5-10 hours of use, and I have a 9-volt power supply
:   (that plugs into the wall).  Replacing the +9 volts battery
:   with the power supply will be easy.  Is there an easy way
:   to replace the -9 volt battery?
: 
: Why not try a higher voltage DC transformer, it. 24 Volts and call
: 12 volts ground. Then the original 24 volt terminal will be +12V
: reference to "ground" and the original 0 volt terminal will be -12V.
: Its all relative...


Another question is:

1.
Do you need really ops that consume dual power-supply? Perhaps you can take
ops which working with single-supply and counsume less power.

2.
Your circuit works with battery longer if you take modern ops like EXCALIBUR 
from Texas-Instruments:
			*  Low Power
			*  It works with single-supply (input: PNP-stage)
			*  High Slewrate
			*  High BW
			*  Not too much noise for many applic. (17nV[1kHz])
	Example:
	--------
	TLE 2021 = Single ops
	TLE 2022 = Dual   ops
	TLE 2024 = Quad   ops


Greating from	Thoma
Newsgroups: sci.electronics
From: sims@zds-oem.zds.com (Mike Sims)
Subject: Re: Looking for : C Compiler for Intel 8751
Organization: Zenith Data Systems, OEM Systems Engineering
Date: Wed, 14 Oct 1992 15:53:30 GMT

I also am looking for a C compiler for the 8751.  Is there possibly a GNU
gcc available for this (like the one discussed earlier for the 6809) floating
around somewhere on the net???

Mike Sims

Newsgroups: sci.electronics
From: markz@ssc.com (Mark Zenier)
Subject: Re: archive server for pa
Organization: SSC, Inc.,  Seattle, WA
Date: Thu, 08 Oct 1992 05:27:46 GMT
X-Newsreader: Tin 1.1 PL3

cyberman@toz.buffalo.ny.us (Cyberman) writes:
: 
:    Mark Zenier was espousing about 'Re: archive server for pa',
:    on [10-04-92  03:31] to All!
:  MZ> There are also CD Rom systems if you have a couple of kilobucks.
: 
:     What for the CD?  CD-ROMS drives are $200-$400 of course the
:     software may be a different matter.

This was a system from the Canhers [sp] publishing company.  
The picture in the brochure had a portrait mode monitor and
4 or 5 CD rom drives.  But even the subscription for just the
disks was pretty steep.

Mark Zenier  markz@ssc.wa.com
From: A2HQC@CUNYVM.BITNET
Newsgroups: sci.electronics
Subject: 68hc11 Evaluation Board Wanted
Date: 14 Oct 92 02:58:32 GMT
Organization: City University of New York/ University Computer Center


     I am looking for a 68hc11 evaluation board if someone has one that is
gathering dust around for sale I would be interested. Or does anyone have
a pcboard layout for an evaluation board of sorts. Thanks.


                                                    Mark Kurzawa
Newsgroups: sci.electronics
From: u009@csx.cciw.ca (G. Stewart Beal)
Subject: Re: Need transmitter for testing radar detectors
Organization: Canada Centre for Inland Waters
Distribution: usa
Date: Thu, 15 Oct 1992 18:12:56 GMT

In article <1992Oct14.141336.6786@digi.lonestar.org> jsevinsk@digi.lonestar.org (John Sevinsky) writes:
>I would like to build a low-power transmitter which can be used to test
>radar detectors.  Can I convert a radar dectector into a radar transmitter?
>
>John
>jsevinsk@digi.lonestar.org

The old ones usually already are... due to the leakage of RF from the
local oscillator. Another possibility is a 2 meter handheld (about 2
watts) should trigger the detector due to n-th harmonic radiation. If not,
connect a diode to the antenna and go again.
 
Regards, Stu Beal, VE3MWM, U009@CS.CCIW.CA,
National Water Research Institute, Burlington, Ontario, Canada.
 
"She was a definite '10': a '5' with a high paying job." - Cole B. Kiser
 

Newsgroups: sci.electronics
From: srgxnbs@grv (Bruce Spedding)
Subject: Power and signal over 50 ohm cable
Reply-To: srgxnbs@grv
Organization: DSIR, Lower Hutt, New Zealand.
Date: Thu, 15 Oct 92 03:23:29 GMT

This is a repost, our system is flakey so I may have missed  a response:
basically I'd like to get a circuit which would allow me to power a remote
transducer pre-amp (say 20-30VDC) and return the amplified signal (10kHz-
1MHz) via a single 50 ohm coax cable. I have commercial transducers that
do this but the only part I can get a look at is the LC decoupler which
decouples the power supply from the signal at the receiver end.
Please EMAIL if possible or FAX +64 +4 569 0132

thanks
Bruce Spedding
From: an938@cleveland.Freenet.Edu (George II Lenzer)
Newsgroups: sci.electronics
Subject: How do those motion detectors work?
Date: 9 Oct 1992 04:04:37 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: slc4.ins.cwru.edu


	I would like to know how those motion sensing yard lights
work.  Are they based on IR sensing?  Does anyone have a schematic?
I would like to build one for use indoors.

						Thnx,
						George II Lenzer
-- 
"I'll let you in on a little secret.
	The whole universe is totally INSANE!!!!"
						Mr. Natural

Newsgroups: sci.electronics
From: jwi@world.std.com (Jazzman)
Subject: Affecting polygraph results
Organization: Nexus
Distribution: sci.electronics
Date: Thu, 8 Oct 1992 21:18:34 GMT

I'll apolgize up front if this is the wrong newsgroup for this
question.  Pointing me in the right direction for the answer will
defintely be appreciated!

My question is: If one wants to affect the results of a polygraph, how
does one do this and how effective can one anticpate the results
being?

I've heard stories about some people who are very effective at this
trick and a colleague and I were vigorously debating how its done and
whether faking can be 'learned' relatively simply.

Thanks in advance,

    John   (jwi@world.std.com)
.
From: corey@amiganet.chi.il.us (Corey Sweeney)
Newsgroups: sci.electronics
Subject: impedance
Date: 10 Oct 92 21:41:54 GMT
Organization: Amiga Network Information Systems

could someone please enlighten me on some equations for impedance?  basicaly i
want what ohm's law is to resatnce for impedance.

Please E-mail it to me because i can't keep up with the newsgourps.

Corey

--------------------------------------------------------------------
Corey Sweeney
corey@amiganet.chi.il.us
I do not own a amiga!
I am not responsible for my oppions
Newsgroups: sci.electronics
From: vreeburg@fys.ruu.nl (Jurriaan Vreeburg)
Subject: Re: 25 ohm coax cable
Organization: Physics Department, University of Utrecht, The Netherlands
Date: Mon, 12 Oct 1992 13:15:54 GMT

In <7380082@hpnmdla.sr.hp.com> stanb@hpnmdla.sr.hp.com (Stan Bischof) writes:

>In sci.electronics, vreeburg@fys.ruu.nl (Jurriaan Vreeburg) writes:

>>I think that putting two cables in parallel doesn't change the impedance, since
>>the impedance is defined as:

>>                   L
>>Z = square_root ( --- )
>>                   C
>>L: inductance per unit length
>>C: capacitance per unit length

>Yep.

>>What happens if we put two cables in parallel: both the inductance and the capacitance
>>increase by a factor of two -> Z doesn't change!!! 

>Nope. Capacitance is doubled, inductance halved, Z halved.
>      Don't forget that Z=1/jwC for cap but jwL for ind.

>Don't believe me? Try connecting a 50 ohm cable to two 50 ohm cables
>      in parallel. Launch pulse and see if you have a reflection at the 
>      junction. Easy to do with any oscilloscope and a pulse generator.

I had some doubt before posting my previous answer to the problem, but imagagine:


                50 ohm
           =============
25 ohm  //               \\   25 ohm
========  A             B  ============
        \\               //            |
          ===============             ---
              50 ohm                  | |
                                      | | 25 ohm
                                      | |
                                      ---
                                       |
                                      GND

A signal arriving at junction A sees an impedance of 25 ohms. So at that point no
reflections occur. But what is the impedance which the signal travelling through
the lower cable sees arriving at junction B? It looks to me that it surely isn't
50 ohm, so at that point reflections are produced. 

One other porblem I have, is that all mailers just replace a coax cable by
an inductance and a capacitance:

        --- L ---
                 |
 Z -->           C
                 |

           1              L
Z = jwL + ---  <> root ( --- )  !!!!!
          jwC             C

So I don't think that one can 'simply' put the inductances and the capacitances
in parallel.

Any comments?

-- 
Jurriaan Vreeburg                             email: vreeburg@fys.ruu.nl
Department of Physics and Astronomy           tel.:  (+31)-(0)30-534566
P.O. Box 80.000
3508 TA  Utrecht  Holland
Newsgroups: sci.electronics,rec.autos.tech
From: mark@wdcwdc.sps.mot.com (Mark Shaw)
Subject: Re: GM diagnostic harness
Organization: Motorola Western MCU Design Center, Chandler Arizona
Date: Thu, 8 Oct 1992 15:28:53 GMT

In article <Bvrppv.GGC@medar.com>, wpeloqui@medar.com (Willie Peloquin) writes:
|> In article <1992Sep24.134143.23375@ll.mit.edu> jth@ll.mit.edu (Joe Healey) writes:
|> >
|> >
|> >I have an 87 Chevy Cavilier and am interested in building a circuit
|> >that can capture, decode, and display ( in some fashion ) the data
|> >comming out of the car's diagnostic harness.
|> >
|> >Does anyone know of where I can find a technical specification 
|> >describing the dignostic interface and data stream or if a circuit 
|> >allready exists ( ie Radio Electronics ) to do this.
|> >
|> >I know that these scan tools can be bought, but they are too 
|> >expensive for me to purchase. 
|> 
|> I just saw a ECM diagnostic tool at a local discount auto parts store. The
|> cost was @ $40.00. There were three models available. One for each American
|> car manufacturer.
|> 
|> So they are available and they are fairly inexpensive!


Those "inexpensive" ECM diagnostic tools in the auto parts store are
nothing more than an overpriced jumper wire with booklet full of
failure codes.  You can do the same thing with a piece of wire and
the factory (Helm) shop manual.  On my GM cars I just short the
two appropriate pins together and the "CHECK ENGINE" light flashes
the error code number.  

Mark
From: daveg@peewee.nwc.navy.mil (David R. Gagnon           Code 3814                               Phone 939-1416)
Newsgroups: sci.electronics
Subject: Re: 25 ohm coax cable
Keywords: coax cable
Date: 8 Oct 92 17:21:04 GMT
Organization: NAVAIRWARCENWPNDIV, China Lake

In article <1992Oct8.120225.6247@fys.ruu.nl> vreeburg@fys.ruu.nl (Jurriaan Vreeburg) writes:
>In <bvr5pd.14o@wang.com> garyf@wang.com (Gary Field) writes:
>
>>dhina@dxcern.cern.ch (Mourad Dhina) writes:
>
>>>Hello,
>>>i am trying to realize a circuit i found in an electronics magazine.
>>>one of the components it uses is a semi-rigid coax cable of
>>>25 ohms impedance. this is the first time i hear of this (i only
>>>knew 50, 75 and 93 ohms cables, which are standard). anybody
>>>knows where to find this?
>>>Mourad
>
>>Put two pieces of 50 Ohm cable in parallel. It should be exactly the same.
>>Gary
>
>After reading Gary's answer I had some doubt of its correctness. It implies
>that by putting two 50 Ohm coax cables in series, one is able to create a 100 Ohm
>coax cable, which is certainly not true.
>
>I think that putting two cables in parallel doesn't change the impedance, since
>the impedance is defined as:
>
>                   L
>Z = square_root ( --- )
>                   C
>L: inductance per unit length
>C: capacitance per unit length
>
>What happens if we put two cables in parallel: both the inductance and the capacitance
>increase by a factor of two -> Z doesn't change!!! (more stuff deleted)

Whoa! Be careful. Remember that parallel connection of two inductors of equal
value gives half of the inductance while parallel connection of two capacitors
gives twice the capacitance. The resulting equivalent circuit for the
transmission line has twice the capacitance and HALF the inductance and the
parallel connection of two identical transmission lines does indeed give half 
of the original characteristic impedance.
Dave
From: fourie@odie.ee.wits.ac.za (Andre Fourie)
Newsgroups: sci.electronics
Subject: Re: 25 ohm coax cable
Keywords: coax cable
Date: 14 Oct 92 09:42:16 GMT
Article-I.D.: odie.fourie.12
Organization: Wits Electrical Engineering (Novell Users).

In article <1992Oct9.201011.15028@cbfsb.cb.att.com> feg@cbnewsb.cb.att.com (forrest.e.gehrke) writes:

>In article <1992Oct8.120225.6247@fys.ruu.nl> vreeburg@fys.ruu.nl (Jurriaan Vreeburg) writes:
>>
>>>Put two pieces of 50 Ohm cable in parallel. It should be exactly the same.
>>>Gary
>>
>>After reading Gary's answer I had some doubt of its correctness. It implies
>>that by putting two 50 Ohm coax cables in series, one is able to create a 100 Ohm
>>coax cable, which is certainly not true.
>>
>Gary didn't say anything about connecting the two pieces in series.

>>I think that putting two cables in parallel doesn't change the impedance, since
>>the impedance is defined as:
>>
>>                   L
>>Z = square_root ( --- )
>>                   C
>>L: inductance per unit length
>>C: capacitance per unit length
>>
>>What happens if we put two cables in parallel: both the inductance and the capacitance
>>increase by a factor of two -> Z doesn't change!!! Putting two cables in series doesn't
>>change the impedance as well, since L & C are defined per unit length, which don't
>>change at all in that case.
>>
>You had better rethink the above statements.  Since when does paralleling
>two inductances double the inductance?

>Forrest Gehrke feg\@dodger.att.com

I have used both series and parallel lines extensively - both principles 
work. Parallel lines are simple enough ; if you use coaxial cable you just 
combine inners and braids. You can even combine different Zo cable and get 
the expected parallel characteristic impedance.

Series lines are obtained in practice with coaxial cable by laying the 
cables side by side and joining the braids of both at input and output. The 
signal and load is then connected between the inners and the cable will 
behave with characteristic impedance which is the sum of the two individual 
cable impedances. Very easy to measure with Network Analyzer or impedance 
bridge by measureing the reactance of a cable under OC and SC termination. 
The square root of the product is equal to the Zo. Choose a cable length 
which is approximately eighth wavelength at measurement frequency so that 
the inductive and capacitive reactances are more or less equal (to avoid 
multiplication of a small with a large number).

Andre Fourie
Newsgroups: sci.electronics