HDTenEightyP/NetNews huggingface dataset:
Newsgroups: sci.electronics
Subject: Re: Question on BeO , Be Cu
From: feluna@ee.latrobe.edu.au (Feluna Dube)
Date: Thu, 19 Nov 1992 05:46:24 GMT
Organization: Department of Electronic Engineering, La Trobe University

testing

Newsgroups: sci.electronics
From: wilusd@cary107.its.rpi.edu (David John Wilusz)
Subject: 555timer/flasher thanks
Reply-To: wilusd@rpi.edu
Organization: Rensselaer Polytechnic Institute, Troy, NY.
Date: Tue, 17 Nov 1992 23:08:55 GMT


	Thanks for everyone`s help in getting this circuit going...I used it to drive a 7490 binary counter.
Thanks again!!

Newsgroups: sci.electronics
From: halberst@world.std.com (jerry halberstadt)
Subject: non-mouse pointer devic
Summary: To avoid discomfort due to working with mouse need other pointer device
Keywords: mouse, trackball,joystick, glove
Organization: The World Public Access UNIX, Brookline, MA
Date: Wed, 18 Nov 1992 13:16:39 GMT

Computers have certain protocols for mouse pointing device. Joysticks,
gloves and other contgrol devices are used in games and input to a game
port with different protocols. I wold like to be abler to use a good
quality pointing device and have the computer see it as an ordinary mouse.
Trackballs are OK but not ideal. Graphics tablets using electromagnetic or
electrostatic sensors exist which present a mouse-like signal to the computer.

A couple of years ago there was a flurry of interest in a Nintendo power
glove with several people trying to adapt for use with various computers.

I am now using a PC (486 33 MHz) with        Windows, so the goal is to
present the PC with some input that looks like a Microsoft Mouse. Or I
could get a Sun but the principles would be the same.

Does anyone have a working device of this nature? Know how to do such a
thing?

Please reply by email.

Thanks.
-- 
Jerry Halberstadt	New Technology Publishing, Inc.
POB 9183: c/o Mailboxes Etc.(#110)
955 Mass. Ave., Cambridge MA 02139 USA
617-661-3851		halberst@world.std.com
Newsgroups: sci.electronics
From: schuster@panix.com (Michael Schuster)
Subject: Re: Help! Converting 2400 to 9600 baud.
Date: Wed, 18 Nov 1992 14:19:47 GMT
Organization: PANIX Public Access Unix & Internet, NYC

In article <1992Nov17.174405.44889@kuhub.cc.ukans.edu> 2hujpapaw@kuhub.cc.ukans.edu writes:
>
>Has anyone ever had any luck (or ever tried for that matter) converting
>a 2400 baud modem to 9600 baud?  I have heard that it can be done fairly
>easily by replacing a few key IC's.  I will try to get the text file to
>do it if anyone is interested.

Weekly posting.

The 2400 --> 9600 modem conversion is a hoax.
A cruel joke.
Junk.
A waste of bandwidth.

Erase it, and tell every BBS operator whose system you find it on
to do the same.



-- 
_______________________________Mike Schuster________________________________
NY Pub. Access UNIX/Internet: schuster@panix.com | 70346.1745@CompuServe.COM
The Portal (R) System: schuster@shell.portal.com | MCI Mail,GEnie: MSCHUSTER
From: ferguson@tc.fluke.COM (Ed Ferguson)
Newsgroups: sci.electronics
Subject: Wanted - PCB Fab Shop
Date: 17 Nov 92 17:06:48 GMT
Article-I.D.: tc.1992Nov17.170648.26544
Distribution: usa
Organization: John Fluke Mfg. Co., Inc., Everett, WA

I'm looking for a shop to produce 10  3"x4" single-sided
circuit boards from my artwork.  Any recommendations?

What can I expect to pay?

Please, no stories on how to do it myself - I etched my
own prototype - now I want a professional job.

Ed Ferguson
Newsgroups: sci.electronics
From: mkuhn@news.weeg.uiowa.edu (Martin W Kuhn)
Subject: Re: 'DreamLight' wanted!
Organization: University of Iowa, Iowa City, IA, USA
Date: Tue, 17 Nov 1992 17:36:02 GMT

In article <1992Nov16.224105.18949@mailhost.ocs.mq.edu.au> johnh@macadam.mpce.mq.edu.au (John Haddy) writes:
>In article <1992Nov16.111944.4390@kth.se>, e92_anh@vaxkab.lne.kth.se () writes:
>|> On Sunday 15 November 1992, I was watching 'Beyond 2000' on Discovery
>|> channel. One of the wonders they were showing this time was an apparatus
>|> to -while you're sleeping- detect your REM's and then tell you that you
>|> are dreaming (by flashing lights in front of your eyes for a while).
>|> 'DreamLight' I think it was called.
>|> 
>|> The idea is that you ACTUALLY CAN PERCIEVE THIS while sleeping and thus
>|> get aware of the fact that what you are experiencing is, in fact, a
>|> dream! Well, hey! This sounds cool, does it not?

I saw this thing in a catalog once several months ago.  (No, I don't
remember what catalog it was)  Interesting idea, but I'm doubtful as to
it actually *working* or not.  It was quite expensive-- something like
US $1500 or something rediculous like that.  An electronic cue for
dreaming might be fun, but I bet you'd get similar results just wiring
up a pair of LED's in a pair of swim goggles with a flasher circuit to,
say, flash the LED's for around 30 seconds every hour or so.  If you 
don't happen to be in REM sleep when the LED's flash, then nothing happens
anyway.  I'm sure the LED's would happen to flash during REM sleep enough
times to make it effective, if the idea is sound.  Personally, I'm not sure it
would work anyway;  most minor external stimuli gets "masked" in some way
during dream stages; I doubt you'd get enough of a definite "cue" to promote
lucid dreaming.  Perhaps I'll give the "swim goggle" circuit a try just
to see what happens...

Anyway, I don't think you're missing anything by not being able to find
one of these in your country....  Sounds like a waste of US $1500 to me...

                      --Marty
Newsgroups: sci.electronics
From: sreeb@crash.cts.com (Ed Beers)
Subject: need vertical plugin for Tek 7000 series scope
Organization: CTS Network Services (crash, ctsnet), El Cajon, CA
Date: 21 Nov 92 02:06:46 GMT

Anybody have one they want to sell or know of a likely 
source?
Newsgroups: sci.electronics
Subject: Location of objects
From: geoffrey@cosc.canterbury.ac.nz (Geoff Thomas)
Date: Tue, 24 Nov 1992 03:20:55 GMT
Organization: Computer Science,University of Canterbury,New Zealand

I'm wanting ideas for a device that can determine the location of
a group of objects, and their distances apart, by non-invasive means.

Something akin to a metal detector, that can tell you where the coins
are, and how far apart they are, although it won't be working with coins.

NOTE: the objects are not ferrous, or metallic, so a magnetic device is
probably out of the question.

Something based on video might work, but there are parallax effects to be
considered when the unit is operated at an angle.

The objects will all be on a flat plane, and the measuring unit should be
able to measure from any angle and still be accurate, which suggests some
kind of radio or other similar device.


Any ideas greatly appreciated. Thanks.


Geoff Thomas.
From: wb8foz@skybridge.SCL.CWRU.Edu (David Lesher)
Newsgroups: sci.electronics
Subject: Re: Tone frequencies on telephone
Date: 21 Nov 1992 16:50:29 GMT
Organization: NRK Clinic for habitual NetNews abusers - Beltway Annex
Reply-To: wb8foz@skybridge.scl.cwru.edu (David Lesher)
NNTP-Posting-Host: skybridge.scl.cwru.edu


Other posted the correct data.

Note that the DTMF tones are standardized world-wide, UNLIKE dial
pulse. Now, not everyone uses ABCD or even * and #, but the tones are
the same. That's an improvment worth noting.  Otherwise, every country
would need their own version of the Touch Tune Songbook......

[This does not say that everyone has to detect DTMF, but if they
do, it's the same tones.]
--
A host is a host from coast to coast..wb8foz@skybridge.scl.cwru.edu
& no one will talk to a host that's close..........................
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433
Newsgroups: sci.electronics
Subject: Square to sine Converter
From: allen@eagle.wesleyan.edu (Allen D. Alonzo)
Date: Mon, 23 Nov 1992 14:41:51 GMT
Organization: Wesleyan University, Middletown, CT USA


What would be the best approach to convert a TTL level 50% duty cycle square 
wave to a low distortion Sine Wave?  Would passing it through a LOW PASS 
filter set near Fx2 work?   I need to convert frequencies from approx. 300 - 
1200 Hz.  Thanks in advance for you help.

Please reply to:

AALONZO@EAGLE.WESLEYAN.EDU
This mail program inserts the wrong EMAIL address for me.

Thanks,

Allen Alonzo
Wesleyan University
Electronics Shop
Newsgroups: sci.electronics
From: cmwolf@mtu.edu (christopher m. wolf)
Subject: Re: CD ROM and D.A.T. Sample Rates
Organization: Michigan Technological University
Distribution: sci
Date: Sun, 15 Nov 1992 16:01:07 GMT

I believe CD's are sampled at 42.7kHz
From: garyg@Warren.MENTORG.COM (Gary Gendel)
Newsgroups: sci.electronics
Subject: Re: Soundblaster voicemail help needed
Date: 20 Nov 1992 13:45:55 GMT
Organization: Mentor Graphics, IC Group
Distribution: world
Reply-To: garyg@Warren.MENTORG.COM
NNTP-Posting-Host: garyg.warren.mentorg.com

I would be more concerned with destroying your sound card, than getting in trouble
with the phone company.  There can be a significant voltage spike on the phone line
during a lightning storm, and the ringing voltage can go up to 100 volts.  I suggest
that you use a small (inexpensive) isolation transformer, and a varistor on the sound
card side to squelch the transients.  This is the typical way devices like modems are
designed.  There are a number of good books on telephone line interfacing which will
define the on-hook and off-hook line conditioning.  I wish I could be of more help
but it has been 12 years since I did modem designs for a living.  Incidentally, the
FCC had a spec which required the attached equiptment to withstand 10,000 volt spikes
(of short duration).

Gary Gendel
From: norlin@midway.ecn.uoknor.edu (Norman Lin)
Newsgroups: sci.electronics
Subject: DreamLight Construction Ideas (was Re: 'DreamLight' wanted!)
Date: 21 Nov 92 15:21:35 GMT
Article-I.D.: constell.By2nzz.1C2
Organization: Engineering Computer Network, University of Oklahoma, Norman, OK, USA

stansbury-travis@yale.edu (Travis Stansbury) writes:

>Net-scepticism aside, this IS sci.electronics, and since I think most of
>would agree that a cool grand is a little spendy for a pair 'o flashig
>goggles, how would one actually construct this particular beast.  I've
>read the swim-goggle shotgun idea (and think it sounds pretty logical),

What is the swim-goggle "shotgun" idea -- just bombard you with the LED
flashes every 30 minutes or so?

>but what if one wanted to really make a pair that detected REM sleep
>before triggering the LED's - how hard would this be, and does it
>involve enough complex circuitry to warrant a $1000 price tag?

I recall reading somewhere that the reason it's so expensive is that
it's adaptible and configurable.  You can set the length of the
flashes and some other parameters that I can't remember right now.

I believe (does anyone know?) that the DreamLight detects REMs via
a physical sensor mounted on the eyelids during sleep.  If you close
your eyes and hold your finger lightly against your closed eyelid,
you'll feel when you move your eye around, since your cornea protrudes
a bit from the rest of the eyeball.  A sensitive switch or pad of
some sort could detect this.

If this is indeed the way the DreamLight works, then some sort of
software would be needed to decide when your eye movements actually
indicate REM sleep and when they just indicate regular eye movements.
If you have a PC (not necessarily IBM, just a computer), it seems to me
that it would be conceptually trivial to feed the signals from
the eye-movement-detector into the PC, then have the PC control the
flashes, etc. (all the tweaking about timing, sensitivity threshhold,
etc would be controlled through software).

My question:  what sort of a sensor would be delicate enough to detect
the slight bulge of the cornea moving around beneath the closed eyelid,
without causing uncomfortable pressure on the eye?

Norman
norlin@mailhost.ecn.uoknor.edu
Newsgroups: sci.electronics
From: sehari@iastate.edu (Babak Sehari)
Subject: Re: BROKEN TUBE AMP
Originator: sehari@class1.iastate.edu
Organization: Iowa State University of Science and Technology, Ames, Iowa.
Date: Mon, 16 Nov 1992 07:13:03 GMT

In <kkv1+xl@rpi.edu> nasiom@vccnw10.its.rpi.edu (Milton Peter Nasiopoulos) writes:

Q. How to check specker impedance.
A. Use a signal generator, to generate a 1KHz signal put the speaker and
   a one ohm resistance in series, and connect the speaker-resistance
   combinations to the signal generator. Measure, the voltage across the
   speacker and the one ohm resistor. Now you can calculate the speaker's
   resistance at 1KHz.  Also check the DC resistance of the speaker with
   ohm-metar.  Your future speackers should have the same impedances.
Q. What could have gone wrong?
A. The output transformer that connects the speakers to Amp. might have
   shorted itself.  If so, it should be changed.  Look at the resistors
   see if you can find burning sign on those.  See if the Amp burns the
   fuse without speakers?  Also, tube Amp are not supposed to run with
   Sq. waves or very high frequencies.

Good luck, let me know if you had more problems.

                With highest regards,
                     Babak   Sehari.

-- 
Organization: Senior, Electrical and Computer Engineering, Carnegie Mellon, Pittsburgh, PA
Newsgroups: sci.electronics
Date: Fri, 20 Nov 1992 23:33:43 -0500 
From: Wayne Alan Martin <wm1h+@andrew.cmu.edu>
Subject: ROM programmer 

Hello,

I am considering the purchase of a ROM programmer for an IBM PC.  I want
to program the standard series roms including a 27, etc., and some
microprocessors.  Any recommendations for model or supplier would be
greatly appreciated.

Thanks

Wayne Martin
From: annette@boole.seas.ucla.edu (Annette K. Nasif)
Newsgroups: sci.electronics
Subject: imaging system
Keywords: rocket, photos
Date: 18 Nov 92 07:56:34 GMT
Organization: SEASnet, University of California, Los Angeles

Hello, I am involved with a group of UCLA students who are attempting to
build an amateur rocket capable of climbing to 200,00ft and transmitting
images back to the ground.  I would appreciate any input anyone could give
me on what type of imaging system would be the best to use.  I would like
to have a videocamera, but the people working on telemetry say that it would
be too difficult to transmit back that much information.  I therefore need
to find some sort of camera, the lighter and smaller the better, that can
take a series of snap shots (at least 8 bit resolution) which can then
be transmitted and received on the ground.  Any suggestions, ideas, or
starts in the right direction will will be greatly appreciated.  Thanks





Newsgroups: sci.electronics
From: uteca042@unibi.hrz.uni-bielefeld.de (0116)
Subject: Dipol Simulation wanted!
Date: Fri, 20 Nov 92 12:23:44 GMT
Distribution: usa
Organization: Universitaet Bielefeld

I need some stuff about programming a Simulation of a Dipol radiation
from Heinrich Hertz. It is very important for a friend of mine (electric
engineer). I know that I got a 3D Simulation from a ftp server along time
ago, but I deleted it because I had no use for it. Knows anybody where I
can get it once again? I would very pleased if someone send me email about it.

Send to
uteca042@unibi.hrz.uni-bielefeld.de


Newsgroups: sci.electronics
From: medin@catbyte.b30.ingr.com (Dave Medin)
Subject: Re: BROKEN TUBE AMP
Reply-To: medin@catbyte.b30.ingr.com
Organization: Intergraph Corporation, Huntsville AL
Date: Tue, 17 Nov 1992 16:20:28 GMT

In article <1992Nov16.195640.8006@mnemosyne.cs.du.edu>, aduell@nyx.cs.du.edu (Tony Duell) writes:
|> 
|> Its a bad idea to run any tube (valve) amplifier without a load, as the
|> resultant reduction in plate (anode) current causes an increase in
|> screen-grid current which can damage the vavles - I've seen the screen
|> grids of EL84's (6AQ5???????) get red hot on an amplifier without a load
|> connected.

Most audio tube amps have the output transformer as a DC load.
The AC load on the other side of the transformer shouldn't affect the
tube bias at all (unless, of course, the transformer fails...).
This doesn't hold for direct-coupled circuits (hard to find in audio
amps because of the characteristic impedance mismatch between tube
plates and speakers) or class-C amps which are usually not in audio
circuits either.

-- 
--------------------------------------------------------------------
       Dave Medin			Phone:	(205) 730-3169 (w)
    SSD--Networking				(205) 837-1174 (h)
    Intergraph Corp.
       M/S GD3004 		Internet: medin@catbyte.b30.ingr.com
  Huntsville, AL 35894		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: cyberman@toz.buffalo.ny.us (Cyberman)
Newsgroups: sci.electronics
Subject: Re: a lead on saturn seri
Date: 16 Nov 92 01:57:19 GMT
Article-I.D.: toz.gate.907auB1w165w
X-Maildoor: WaflineMail 1.00r


    Andrew H. Bond entitled a message as 'A lead on saturn serial p',
   on the 11-14-92  10:09 to All.
 AHB> I'm not sure how far I will get, but I plan to call them up and
 AHB> request info on the port. I also noticed on the back that the
 AHB> device had a patent pending. If this is true then the patent
 AHB> office should have complete specs on the device. Does anyone
 AHB> out there know the proceedure for getting this type of info
 AHB> from the Patent office? Also if any of you live near Micro
 AHB> Processor Systems, maybe you could swing by. I have found that
 AHB> you sometimes have better luck getting free stuff in person. In
 AHB> any Event I plan to call them on monday, and will post a
 AHB> followup here to let you know how it went. later--AHB

    Just go to your local patent library.  However if a patent is
    pending it means they have applied for one.  I suggest you
    look elsewhere for the serial port information.  Find out if
    there is a patent on the port for example (the other patent
    is for the hand held unit)

                Stephen Cyberman@Toz.Buffalo.NY.US
             Mangled on Sun  11-15-1992  at 19:42:08

... Intelligence is no deterrent to ineptitude.
--- Blue Wave/QWK v2.10
                                           
Newsgroups: sci.electronics
From: pollock@milton.u.washington.edu (Joe Pollock)
Subject: Re: Big NASTY Brother Radio Shack
Keywords: employment practices
Organization: The Evergreen State College
Date: Fri, 20 Nov 1992 20:33:19 GMT

I haven't followed all the postings in this thread, so I hope this isn't
a repeat...

     A friend of mine recently interviewed with Radio Shack in the Puget
Sound area.  Aside from a very rigid dress/appearance code, what caught
his eye was the "intellectual property" clause in the employment
agreement.  Unfortunately, he didn't escape with a copy :-(

     It appears that Tandy/Radio Shack lays claim to anything you may
develop, even on your own time, that may be in any way related to your
employment at Radio Shack.  It was phrased as "For instance, if you get
an idea for a computer game, and write and sell it, Tandy claims the
rights to it, because you got the idea for it here."  Sounds like it
goes far beyond normal employment agreements.

     He asked the interviewer, "I'm also a photographer.  Does that mean
if I photograph a nude wearing a pair of RS headphones, RS will claim
the rights to the picture?" They replied, "No, but if you do ad
photographs for another electronics store, you might hear from our
attorneys."

     Anyone out there go through the interview process?  Might be fun
for someone to do it, knowing what it's all about.  Is it legal to
split with a copy of the agreement? 

--joe
From: terry.walter@outlan.ersys.edmonton.ab.ca (Terry Walter) 
Newsgroups: sci.electronics
Subject: NEED IC
Date: 23 Nov 92 00:43:00 GMT
Reply-To: terry.walter@outlan.ersys.edmonton.ab.ca (Terry Walter) 
Distribution: world
Organization: Outland BBS  UUPCB  403-475-9588

If you happen to come across a MOSTEK MK 97400R, let me know.  thanks.
                                                         
Newsgroups: sci.electronics
From: patw@cserver.plexus.com (Pat Wilson)
Subject: Re: Cable TV Rules
Organization: Plexus Corp. -- Neenah Wisconsin
Distribution: na
Date: Fri, 20 Nov 1992 18:34:28 GMT

kbass@gmuvax2.gmu.edu (Ken Bass) writes:

>In article <3977@eastman.UUCP> lsls00@iliad.Kodak.COM (Ilia Levi) writes:
>>
>>Actually you are not buying the whole spectrum of frequencies. Cable company
>>is offering you service with certain conditions attached. If you don't like
>>those conditions(more money for the extra extensions) you have a right to
>>refuse to buy the service. If you CHOOSE to buy their service, you must, morally
>>and legally, abide by their rules. If you don't like their rules, get a dish,
>>don't watch TV, etc. This is a free country not only for the consumer, but for
>>the business as well.
>>-- 
>>
>>--------------------
>>Ilia, levi@kodak.com

>To suggest that we have a choice and to be discussing a monopoly is
>hypocritical. 

>Also, just because I say these are the rules doesnt mean they are. You
>do not have the right to take away someones rights that you didnt give
>them in the first place.

>Thats like me saying, you cannot have free speech, if you buy telephone
>service. It is wrong and your rights are protected.

>   ---Ken

Not to prolong this, but what is your point?  Are you suggesting that
you have a right to cable TV?  The problem with that is that it 
automatically implies that "someone" must provide it to you.  
Your analogy to free speech has no bearing whatsoever, unless there
is something I missed?
Newsgroups: sci.electronics
From: medin@catbyte.b30.ingr.com (Dave Medin)
Subject: Re: Good cheap 19" racks - where 2 buy ???
Reply-To: medin@catbyte.b30.ingr.com
Organization: Intergraph Corporation, Huntsville AL
Date: Tue, 17 Nov 1992 17:07:08 GMT

In article <41117@sdcc12.ucsd.edu>, ee154fbk@sdcc15.ucsd.edu (M) writes:
|> Need to stuff all my rackmount modules into a rack.  Anybody know of
|> any good sources for such things???

If you don't need something in such good shape that it qualifies as
living room furniture, I've found that the best source is government
auctions. The drawbacks include the fact that auction goods vary from
auction to auction, and may not be held in your proximity. But, I've gotten
some great 19" racks for $10, including ergonomic tilting racks (on casters
no less). Depending on the contents of the auction, you can find great
test equipment there, too.

I never try to sell racks because of the $$ involved in long-distance
shipping.

Otherwise, SESCOM, who advertises in Radio Electronics, is the cheapest
source I've found for new items.

If you're interested in gov't auction info (free), e-mail me. I typed
some contact info up.

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