HDTenEightyP/NetNews huggingface dataset:
From: bcasper@eos.ncsu.edu (Brian Casper)
Subject: WANTED:  Wire Wrapping tool
Originator: bcasper@c00800-247dan.eos.ncsu.edu
Reply-To: bcasper@eos.ncsu.edu
Organization: North Carolina State University
Date: Fri, 29 Jan 1993 02:08:11 GMT



If anyone has an electric wire wraping tool that they would like to donate
or sell to a poor college student who is taking a hardware project class,
please send me some e-mail...  I have seen new ones ranging from $50-$250,
but I would rather not have to spend that kind of money.  Since this seems
like the sort of thing you might find lying on a workbench under a mile of
dust, I figure somebody out there must have one I can make use of.

Thanks in advance...


-- 
-- 
Brian Casper           |  "I'm tired of all this nonsense about beauty being
bcasper@eos.ncsu.edu   |   only skin-deep.  That's deep enough. What do you
  Pinball Consultant   |   want, an adorable pancreas?"  - Jean Kerr
From: Ligon@macgw1.ge.com (Woody Ligon)
Newsgroups: sci.electronics
Subject: Single channel tuner (summary)
Date: 22 Jan 93 13:56:10 GMT
Followup-To: sci.electronics
Organization: GE-CRD

Recently I posted a request for information regarding the availability of a
device or circuit which would replace the mechanical tuner in an old TV and
tune only channel 3 or 4.  

I received two replies by E-MAIL both of which suggested that I set the
existing tuner to the desired channel and then solder the tuner contacts.
This obviously converts the exiting tuner to a "single channel tuner" and
it also eliminates forever the notorious problems of dirty contacts in old
mechanical tuners.

Since today most people connect their TVs to a VCR which has a tuner and a
single channel output, "repairing" an old TY in this fashion seems entirely
resonable, practical and inexpensive.

My thanks to all who responded.

Woody Ligon
(ligon@macgw1.crd.ge.com)
standard disclaimer applies. 
Newsgroups: sci.electronics
From: (Eric Youngblood)
Subject: Electronic motion measuring?
Date: Tue, 26 Jan 1993 23:08:04 GMT
Reply-To: Peon w/o Email privs (Eric Youngblood)
Organization: BNR, Inc.


I need info about how to electronically measure acceleration.  The idea is
to use intertial navigation based on G forces.  I would like to find out
where to look and how these devices work.  EX: How do those electronic 
carpenter levels work?  Anyone know?

Please post,

      *---------------------------------+---------------------------*
      | Eric Youngblood                                             |
      | Bell-Northern Research    _                                 |
      | Richardson, Texas 75082 _| ~-                               |
      |                         \,  _}                              |
      |                           \(    +---------------------------|
      |                                 |   Peon w/o Email privs    |
      *---------------------------------+---------------------------*
From: francis@ircam.fr (Joseph Francis)
Newsgroups: sci.electronics
Subject: Re: Microwave Popcorn (Susceptors)
Keywords: microwave, susceptors, resistivity, dielectrics, thermal runaway
Date: 26 Jan 93 16:59:20 GMT
Organization: IRCAM, Paris (France)

I am, I think, in love with you.

-joe
-- 
| Le Jojo: Fresh 'n' Clean, speaking out to the way you want to live
| today; American - All American; doing, a bit so, and even more so.
Xref: sparky sci.electronics:23458 ba.market.misc:10421 ba.market.computers:6768
From: vinnieb@sunspot.ssl.berkeley.edu (Vince Bafetti)
Newsgroups: sci.electronics
Subject: TV Vert/Horiz Driver Question
Date: 26 Jan 1993 08:30:38 GMT
Organization: UC Berkeley
Distribution: world
NNTP-Posting-Host: sunspot.ssl.berkeley.edu

	I'm currently working on an video art project that maps raster-
scanned animation to a "wall" of 16 composite video monitors. I'm making
this so that I may switch from video to raster mode by switching the yoke
coil drive from the video boards to my own x-y source. The question is:

	How do I drive the x-y deflection coils on a crt?

	An integrated amp would be the best...but probably not the
cheapest. Since I'm on a budget, a simple discrete amp would be okay,
keeping in mind that I need to make 16 of these!

	Any info on how to drive these (voltage or current amp?),
including shematics, would be greatly appreciated!

	Thanks,
			Vince Bafetti
			vinnieb@ssl.berkeley.edu
		or FAX	510-643-8302
(reply by email instead of this newsgroup is preferred...thanks!)
From: v078p6g8@ubvmsb.cc.buffalo.edu (Richard M Wasserman)
Newsgroups: sci.electronics
Subject: Q: modem on a chip
Date: 26 Jan 93 00:33:00 GMT
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41


	I was hoping someone out there could point me towards a manufacturer
and just as importantly a source for a couple of low speed ( 300/1200 ) modems
in a chip along the lines offered by National.  Single supply (+5) operation
would be a plus.  Thanks in advance.

		Rich Wasserman
From: jm67@hydra.gatech.edu (MURRAY,JEFFREY P)
Newsgroups: sci.electronics
Subject: XSPICE Simulation Tool Discussion
Date: 28 Jan 93 13:57:43 GMT
Organization: Georgia Institute of Technology



   I have gotten a lot of email reqesting more information about 
XSPICE; particularly, most folks seem to want to get more info on
the tools prior to reqesting a copy. This is a reasonable request,
unfortunately, we do not currently have the resources to do much
toward that end, at least not in real time. I may try to get more
information in the form of a spec sheet or attempt to move portions
of the User's Manual onto the xspice@gtri.gatech.edu host machine
to allow for anonymous FTP of that information. In the mean time,
I am trying to answer as many of the questions I receive as possible...
please bear with me.

   For those of you who just can't wait (and I hope there are at least
a few of you ;-), let me suggest that you get hold of your nearest
technical library, and obtain a copy of the Proceedings of the 1992
International Symposium on Circuits and Systems. One of the papers
presented (authors are F.Cox, W.Kuhn, S.Tynor and myself) introduces
XSPICE and details an example of syntax, lists the models included,
and works through an example using XSPICE to simulate the analog and
digital portions (all in one netlist) of a MIDI-controlled music
synthesizer. The paper should provide enough information to cover the
most basic questions that have come up, but I will continue to see
about getting all or portions of the User's Guide up and running.

Again, bear with me. XSPICE is not a commercial product, just as
"plain vanilla" SPICE is not...we don't have the resources of a
MicroSim (=PSPICE) to promote the tools or help new users, although we
would certainly like to. The "cost" of XSPICE is really just for
documentation, cutting tapes, etc. and doesn't provide any real margin
for support...we want folks to use these tools because we know ourselves
how powerful they are. We are convinced that XSPICE provides most of the
capabilities of a PSPICE and in many ways goes beyond it; it's up to the
user community to decide if we're right.

   Regards,

   Jeff Murray
--
MURRAY,JEFFREY P
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!jm67
Internet: jm67@prism.gatech.edu
From: albrecht@csd4.csd.uwm.edu (Chad Edward Albrecht)
Newsgroups: sci.electronics
Subject: Re: RS-232 Pinout help
Date: 22 Jan 1993 08:06:54 GMT
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4


RS-232C Standard Pin Function Designations
------------------------------------------

Pin #		Function
-----		---------------

1		GND
2		TD (TRANSMIT DATA)
3		RD (RECEIVE DATA)
4 		RTS (REQ. TO SEND)
5		CTS (CLEAR TO SEND)
6		DSR (DATA SET READY)
7		GND
8		CD (CARRIER DETECT)
9		DST (DATA SET TEST)
10 		DST
11		--
12		SECONDARY CD
13		SECONDARY CTS
14		SECONDARY TD
15		XMIT CLOCK (DCE)
16		SECONDARY RD
17		RECEIVER CLOCK (DCE)
18		--
19 		SECONDARY RTS
20 		DTR (DATA TERMINAL READY)
21		SQD (SIGNAL QUALITY DETECTOR)
22		RI (RING INDICATOR)
23		DATA SIGNAL RATE SELECTOR
24		XMIT CLOCK (DTE)
25		--


--
>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>><<>>
|  Respond to any of these adresses:    |   UWM-CSD UNIX/MICRO CONSULTANT    |
|  --------------------------------	|      PHONE # (414) 229-6215        |
|  albrecht@csd4.csd.uwm.edu            |              (414) 229-6151        |
|  albrecht@convex.csd.uwm.edu		|  				     |
|  acct146@carroll1.cc.edu		|       [STANDARD DISCLAIMER]        |
|============================================================================|   The Quote for the day is:

.. Any resemblance between the above views and those of my employer,
my terminal, or the view out my window are purely coincidental.  Any
resemblance between the above and my own views is non-deterministic.
The question of the existence of views in the absence of anyone to hold
them is left as an exercise for the reader.  The question of the
existence of the reader is left as an exercise for the second god
coefficient.  (A discussion of non-orthogonal, non-integral polytheism
is beyond the scope of this article.)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: slmdj@cc.usu.edu
Newsgroups: sci.electronics
Subject: Re: hard disk orientation
Date: 26 Jan 93 09:42:10 MDT
Organization: Utah State University

In article <C1GHnF.DGL@dcs.ed.ac.uk>, gst@dcs.ed.ac.uk (George Taylor) writes:
> Could anyone tell me if running a hard disk vertically instead of horizontally
> (e.g.using a desktop machine on it's side like a 'tower' system)
> is likely to decrease it's lifetime?
> 
> -- 
> George

When my parents purchased their computer 3+ years ago, we had to place it on
its side due to space restrictions... 40MB hard drive is still going strong
today, with frequent (they turn it on/off 3 or more times daily... :-() power
cycling.

For what it's worth
-- 
********************************************************************************
      Paul Cowley      * ..."It's easier said than done."   And if you don't 
   ==EE Undergrad==    * believe it, try proving that it's easier done than
 Utah State University * said and you'll find that 'it's easier said that "it's
  C/A1C  CAP Utah Wing * easier done than said" than it is done.'  Which really
   slmdj@cc.usu.edu    * proves that it's easier said than done.
********************************************************************************
From: svetlich@math.rutgers.edu (George Svetlichny)
Newsgroups: sci.electronics
Subject: How do CD players (audio & CD-ROM) track?
Keywords: CD, tracking
Date: 27 Jan 93 20:21:42 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

The title says it. I would like to know how CD players, the audio variety 
and CD-ROM types track.

Besides plain curiosity there's an ulterior motive for this question. 
I live and work in Brazil (am on leave now) and CD players there have
a problem of skipping which I was told is due to high humidity. Before
bringing a an audio CD player and a CD-ROM reader back to Rio, I would
like to know what to look for in a product that would minimize the
potential for skipping. 

I would also very much appreciate any reference to technical literature
(construction, circuits, maintenance, etc.) concerning CD players and
CD-ROM readers.

Regards
George Svetlichny
-- 
George Svetlichny                    /\      On leave from:
Department of Mathematics          /***|     Departamento de Matematica
Hill Center, Rutgers University   /****|     Pontificia Universidade Catolica
New Brunswick, 08903 NJ          /*****|     Rio de Janeiro, Brazil
Newsgroups: sci.electronics
From: aksarben@athena.mit.edu (Dan McMahill)
Subject: Re: BOOKS NEEDED:  tube primer
Organization: Massachusetts Institute of Technology
Distribution: usa
Date: Fri, 22 Jan 1993 22:23:23 GMT

>In article <C0wnMy.64F@cmcl2.nyu.edu> ali@cns.nyu.edu writes:
>}
>}i'm looking for a good tube electronics book.  something that has application examples/notes/etc...  also, if possible, a book on specifically guitar tube amps (specs/design/schematics (!!))
>}
>}i'm not sure the latter would be made available but basic tube electronics should, eh?

Groove Tubes publishes a book called "The Tube Amp Book".  It has schematics for tons of
commercial tube amps (Marshall, Fender...)  It should be available from your local music
store. 

Hope that helps


Dan McMahill
From: miles@emx.cc.utexas.edu (Miles Abernathy)
Newsgroups: sci.electronics
Subject: Color Camera Wanted, Cheap&Light-Defects OK, Suggestions Requested
Date: 21 Jan 93 22:00:29 GMT
Organization: University of Texas
X-UserAgent: Nuntius v1.1.1d17
X-XXMessage-ID: <A78478C3D3049F2B@mac33.util.utexas.edu>
X-XXDate: Thu, 21 Jan 93 15:58:59 GMT

I am looking for a very small, lightweight  color TV camera, to send up
suspended from a kite. I know that low-cost high-quality midget b&w
cameras are readily available ($204.50, tel. 800-221-2240, as per January
73 magazine), but am hoping to find a cheap color one.

I don!t mind if it has defects, like a burned spot or two. Don!t need a
camcorder, just a camera.

Does anyone know where to find such a device? Any ideas on how to find
units rejected by the manufacturer due to a bad pixel or two?
= = = = = = = = = = = = = = = = = = = =
  _     Miles Abernathy, N5KOB        =
 | |__  miles@emx.cc.utexas.edu       =
_|    | POB 7580, Austin TX 78713     =
\  * /  University of Texas @ Austin  =
  \/    tel. (512) 471-6521           =
= = = = = = = = = = = = = = = = = = = =
Newsgroups: sci.electronics
From: len@zipacna.uucp
Subject: Plated through holes ?
Organization: Zipicna - Salt Lake City Utah, USA
Date: Thu, 21 Jan 1993 22:09:19 GMT

	A while ago I saw a post that gave an address of a company that sells
a rivet kit or something else to do plated through holes ???


					Thanks
							Len

-- 
	  ***********************************************************
	  *                       Len Bayles                        *
	  *		   Innovative Systems Design                *
	  *                  Salt Lake City,  Utah                  *
	  *  uucp:  ..!uunet!caeco.slc.mentorg.com!neb!zipacna!len  *
	  ***********************************************************
Newsgroups: sci.electronics
From: Mike Diack <mike-d@staff.tc.umn.edu>
Subject: Re: Recording sound on chip
X-Xxdate: Tue, 26 Jan 93 15:50:15 GMT
Organization: persian cat & carpet co.
X-Useragent: Nuntius v1.1.1d7
Date: Tue, 26 Jan 1993 02:41:37 GMT

In article <1993Jan25.214046.9622@hplabsz.hpl.hp.com> S.
Sivaramakrishnan, sivaram@hplabsz.hpl.hp.com writes:

>I am looking for a cheap method to record and playback about 15 seconds
of sound on a chip.
>
>The whole setup, I GUESS, will comprise:
>1) A microphone
>2) An A/D converter that digitizes the sound
>3) A unit that accepts the commands "record" and "playback"
>4) Some memory that holds the sound image
>5) A D/A converter to generate an analog signal
>6) A speaker for playback
>7) Power supply
>
>Does a chip that has most/all the features except the power supply exist?
>
Items 1 and 6 (&7 of course) are a bit tricky, but most of the rest is
achieved by a whole bunch of chips from OKI. Some examples :
MSM6308 : A/D,D/A + control circuitry for a 256k DRAM
MSM6309 : A/D,D/A + control circuitry for a 256k SRAM
MSM6322 : All the above + pitch change as well !
There are dozens of them , of varying capabilities
You may also consider the ISD analog storage devices
OKI : 1-800-TEAM-OKI (lotsa colour glossies)
cheers
Mike
From: st1my@rosie.uh.edu (Stich, Christian E.)
Newsgroups: sci.electronics
Subject: Re: Voltage drop across 1N4148 diode?
Date: 24 Jan 1993 00:06 CST
Organization: University of Houston
Distribution: world
NNTP-Posting-Host: rosie.uh.edu
News-Software: VAX/VMS VNEWS 1.41    

In article <1jq3dlINNp2f@shelley.u.washington.edu>, whit@carson.u.washington.edu (John Whitmore) writes...
>In article <1993Jan21.101200.8651@mr.med.ge.com> szopinsk@picard.med.ge.com (Jerry Szopinski Mfg 4-6983) writes:
> 
>>The voltage drop across the 1N4148 diode depends on what type of
>>semiconductor material it is made of.  If the diode is made of
>>germanium (no, not the flowers) the drop is around 0.7V; if it
>>is made of silicon then the drop is around 0.5V.
> 
>	Nope; for Ge diodes 0.2-0.3V is typical.  Silicon is nominally
>0.6-0.7 (but this ignores resistance, which can drive either Si or
>Ge devices to 1V or more).  There are, for applications where this
>voltage drop is inconvenient, Schottky rectifiers that use Si and
>metal (Pt is typical) instead of N-Si and P-Si, and the forward
>voltage drop of these Schottky devices is usually considerably
>lower (0.3V or so).  Reverse holdoff voltages for Schottky diodes
>are usually modest (35V or so), which limits their application.
> 
>	LEDs are made of materials that have forward drops ranging
>from 1.2V (for IR) to 2.4V (the blue LEDs).
> 
>	John Whitmore

Since I started this thread I got a sizable number of responses (I haven't
sent any replies yet, since I am really busy - exams).  The idea of using
a Schottky diode has been mentioned several times so I am looking into
replacing the 1N4148 (which is too small, that's why I asked) with another
diode is rated at up to 1A and has an as small as possible forward voltage
drop as possible.  The max. reverse voltage is 5V so this should be no
problem, but I'd like to find a Schottky diode that has a max. reverse
current in the micro Ampere instead of mA range.
This diode is used on the TERMPWR (SCSI-bus) line to prevent an external
device from powering the computer (5-10A through the thin trace -> maybe 
copper vapor).
					Christian
Newsgroups: sci.electronics
From: tedwards@wam.umd.edu (technopagan priest)
Subject: Re: HC11 EVB MC68HC24 PRU
Organization: University of Maryland, College Park
Date: Sat, 23 Jan 1993 19:47:47 GMT

In article <laird.727798045@pasture.ecn.purdue.edu> laird@pasture.ecn.purdue.edu (Kyler Laird) writes:
>tedwards@wam.umd.edu (technopagan priest) writes:
>>Hi!  I think I just toasted the MC68HC24 PRU (port replacement

>You idiot!  What'd you do?  Lay an input line across one of the
>12V rails?  (Gee, that's what I did...)

>University Sales (Relations/.../?) at Motorola sent me a new one
>when I told them I toasted mine.  I almost ordered one from Digi-
>Key or someone like that, but they wanted on the order of $35 for
>the chip!

Yeah, I think I probably dropped an input line on one of the
power rails (DOH!).  Unfortunately, I am not associated with the
fine learning institution where I got it from, and also it is
the old bigger EVB.  I assume the new EVBs use the same PRU,
am I right?  

What am I using it for?  Well, I have a quad D/A converter, and I
am using the HC11 to output digital X,Y positions for two galvometers
to move a laser beam around to do some animation.  Last night I
was using the A/D converter on the HC11 to read an analog joystick
for use in inputing the point positions, but somehere along the line,
I messed up, the output ports went into multiplexed mode, and 
the PRU got too hot to touch...

-Thomas


Newsgroups: sci.electronics
From: kees@ee.ualberta.ca (Kees denHartigh)
Subject: Unix based Boolean->JDEC conversion package required
Organization: University Of Alberta, Edmonton Canada
Date: Fri, 22 Jan 1993 21:13:37 GMT

I am interested in aquiring a Unix based software package that would
take an ascii test file containing boolean expressions and convert
it JDEC format so I can burn PLD's . We have an HP9000-835 running
hp-ux 9.0 and a few 386's attached via serial lines.
The idea is for a number of students to be able to develop boolean
equations on the UNIX host using some editor and run it through this
conversion utility to generate the JDEC file. Hopefully the software
would also contain some error checking etc. The student could then 
go into the lab and download the JDEC to the pc hosted PLD burner
and burn thier chip and continue on to test it out in vector boards.
There are utilities provided by the the pld/gal/eprom burners
but we only have 3 of these machines and 50+ students.
We don't really want them hanging around on the pc to do all of 
their developement.
Any info on such a package would be greatly appreciated.
He have a bit of a budget for this if need be but PD would be
desirable.
Please e-mail any response to kees@ee.ualberta.ca
Thanks in advance.
-- 
Kees denHartigh                         kees@ee.ualberta.ca 
Electrical Engineering Digital Labs     alberta!bode!kees
University of Alberta 238 Civil Elect   Voice (403)492-5421
Edmonton, Alberta Canada                Fax   (403)492-1811
Newsgroups: sci.electronics
From: Dmerrill@bnr.ca (Dana Merrill)
Subject: Re: caller id block
Followup-To: sci.electronics
Organization: BNR
Date: Tue, 26 Jan 1993 19:09:59 GMT

In article <1993Jan25.203845.8439@mav.com>, toddi@mav.com (Todd Inch)
wrote:
> 
> In article <betel.727244356@camelot> betel@camelot.bradley.edu (Robert Crawford) writes:
> 
> >	A more interesting (to me) question: How could someone _with_
> >caller ID screen calls that do not include the information? My idea is
> >for the "black box" to sit between an answering machine and the
> >telephone, and to not pass the ring signal unless the caller ID
> >information comes along...
> 
> Great - if you don't want to receive any long-distance calls.  Calls
> from other exchanges, especially in distant places, may not contain the
> CID info because the necessary SS-7 protocal has not be implemented
> everywhere yet.
> 
> Now if you can distinguish between "blocked" and "not available", that
> would work fine.  This is probably dependant upon your hardware, but
> may also be dependant upon how your local telco has things set up -
> they may send one message for both conditions (although hopefully not!)

There is a parameter that can be included in the CLID message that
identifies the reason for absence of the DDN.  The paremeter can be set to
one of two values, indicating either that a) the information has been
suppressed (blocked) or b) the number is not available.

The problem is knowing whether or not the phone company will choose to
include this information parameter when the DDN is unavailable.  I do not
know whether or not they will, I don't think that there is any requirement
to do so.

It should be easy enough run a little test to find out, assuming that your
CLID phone displays messages such as "Private" and "Out of Area" when
appropriate.  These messages are based on receipt of this parameter.

dam

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

Dana Merrill                                Bell Northern Research
DMerrill@BNR.CA                         Research Triangle Park, NC
==================================================================
Newsgroups: sci.electronics
Subject: Uneven microwave cooking ... why?
From: ryu@husc8.harvard.edu (William Ryu)
Date: 26 Jan 93 17:50:49 GMT
Keywords: microwave

	I was wondering what was the major cause of uneven microwave
cooking.  Is it a hardware problem or is it simply because most foods are
inhomogenous and absorb the microwaves unevenly.  Also why do many frozen
instructions ask you to turn the food or use one of those food spinners? 
Is the distrubution of the microwaves that uneven.  Last question.  My
G.E. microwave has a antenna that spins right below the microwave top and
is encased behind a plastic enclosure.  What does that do?

Please email replies,

Will Ryu
husc.harvard.edu

Newsgroups: sci.electronics