HDTenEightyP/NetNews huggingface dataset:
From: Jason.Goga@mailbox.bison.mb.ca (Jason Goga)
Newsgroups: sci.electronics
Subject: PIC & DIGIKEY
Date: 01 Oct 92  16:45:21 CST

 > Subject: PIC & DIGIKEY
 > Organization: Lockheed Sanders, Inc.
 > Message-ID: <LLEE.92Sep29123712@joker.sanders.lockheed.com>
 > Date: 29 Sep 92 16:37:12 GMT

 > Netters:

 > I'm letting the net know that DIGI-KEY now stocks the great PIC line of
 > "RISC" microcontrollers! I saw it in their latest catalog. For those
 > who've
 > never heard of the PIC, its similar in spirit to the MC68HC705 and its
 > variants
 > only much faster.

 > I, of course, have no connection with Microchip Technology or
 > DIGI-KEY, other than being a satisfied customer.

 > Len.

I'de be interested in hearing what these DIGI-KEY PICs are like? Are they more comprable the the Motorola 'style' or the Microchip line? I don't see how one can be satisfied with Microchip, however all things are possible.

-Jason

---
 * Origin: C.A. - FrontDoor (1:348/207)
From: Vim.Mahadevan@mailbox.bison.mb.ca (Vim Mahadevan)
Newsgroups: sci.electronics
Subject: data acquisition
Date: 24 Sep 92 23:09:40 CST


i'm looking for a good data acquisition card which can handle sampling
rates of up to 40 khz.  the card must be able to both read and convert
analog data and also be able to send control voltages to the device.
incoming voltages are not ttl compatible so some sort of programmable
amplifier will be needed.  interrupts are not needed.  i'm looking
to pay between 500-750.  

vim

 * Origin: The Electronic Mailbox (1:348/7.0)

Newsgroups: sci.electronics,rec.autos.tech
From: ragee@vdoe386.vak12ed.edu (Randy Agee)
Subject: Re: GM diagnostic harness
Organization: Virginia's Public Education Network (Richmond)
Date: Thu, 01 Oct 92 13:28:01 GMT

I read Joe's request for info with extreme interest.  I also
have a GM car with an ECM.  I know from service manuals and
experience that I can get the "hard" fault codes out of the
computer by placing a jumper over two terminals and reading the
flashes on the Service Engine Soon Light.  I also know that
with the proper SCAN tool that all the sensors can be polled and
the various voltage levels that control the spark advance, fuel
injection, etc. can be be monitored.  I am extremely interested
in pursuing the analysis of this data.  I see no reason why a
portable PC with the proper connector and software could not
analyse the data stream through the RS-232 port, for example.
Is there something already out there?  Does any one have info
or know where to find it to develop the software?  Responses
here or by E-Mail would be greatly appreciated.  My local GM
folks just look at me like I am crazy when I ask about
documentation on the data stream.

ragee@vdoe386.vak12ed.edu
Randy T. Agee (ARS WB4BZX)
-- 
================================
Randy T. Agee                     
Virginia Department of Education
Richmond, VA
Organization: Penn State University
Date: Sun, 27 Sep 1992 23:41:35 EDT
From: Jessica S. Grassmann <JSG2@psuvm.psu.edu>
Newsgroups: sci.electronics
Subject: Speech Synch IC Source

Every book I read on speech synthesis claims the SPO256-AL2 is the
chip to use for phoneme-based synthesis.  The manufacturer is Microchip
according to _Designing with Speech Processing Chips_, by Ricardo Jimenez, 1991
1991.  Note the 1991 copyright!  Microchip says they don't make the
chip anymore.

Does anyone know a supplier of any phoneme-based chip?

Any other suggestions?  Here's some backround on my application:

I'm using a Z8681 micro.  This will be interfaced to a PC through an
I/O port.  Therefore, I could use the PC's disk and transfer data through
the 8681 to the synthesiser at no extra circuit cost.

Another twist.  The 8681 and speech IC must work in a stand alone mode
to output 2 short msgs.    If you guessed that this will be a watchdog
timer for my PC your right.

Speech quality does not have to be that good, but defineately understandable.
Unlimited vocabulary would be really great, but at the very least I need
to be able to program my own vocabulary at a low cost.   This is the main
reason I feel that the phoneme-based chip is the way to go.

Above, low chip count, low cost and simplicity is my goal, but if I can
hack out some solution with the micro which would simplify the hardware,
I'm more than willing.

Thanks in advance.
From: jfw@ksr.com (John F. Woods)
Newsgroups: sci.electronics
Subject: Re: Continuous Power
Date: 6 Oct 92 13:13:28 EDT

george@mech.seas.upenn.edu writes:
>:  The CRT is the shortest-lived part in the display by a wide margin,
>maybe at HP :-)
>most of the 'display' failures i've seen have been power supply related.
>we are 'nursing' our last-surviving DEC regis-capable terminal
>by leaving it on all the time

My Heathkit H29 terminal also had power supply problems that I "cured" by
not turning it off.  The filament is powered by the master 12V regulator (an
LM350T), and though it is supposed to be short-circuit proof, I think the
cold-filament inrush current three or four times a day was cooking the
regulator, since I was replacing the LM350T every three months or so until
I stared at the circuit diagram for hints about overloads.  Probably I ought
to give the filament its own 12V transformer, but at this point it's not clear
that the value of an H29 terminal exceeds the cost of a Radio Shack 12V
transformer... ;-)
Newsgroups: sci.electronics,comp.robotics
From: luckey@rtfm.mlb.fl.us (Jon Luckey)
Subject: Re: what is a MC68HC11EVBU
Organization: We don't need no stinkin' batches!
Date: Wed, 30 Sep 1992 01:51:45 GMT

martinez@rodan.acs.syr.edu (Kenneth Mtz. (YONIX)) writes:

> Any information on the above subject would be of great help. What are
>they usually used for? Dimensions ? 

>Thanx,
>Kenn

Motorola had a contest that closed on Nov 15,1986 for uses for their
single chip micro, the 68HC11.

For $68.11 they sent you a kit containing a 68HC11EVB evaluation
board, along with other valuable documents, all in a nice plastic
kit.  Also included were details on where to get FORTH in ROM for
this board.

Perhaps this is what you are looking for.  I have a contest kit.
A
The manual gives the following dimensions:

   Height: 4.625 inches (117.475 mm)
    Width: 6.0   inches (152.400 mm)
Thickness: 1.0   inches (25.400 mm)  (with components)

A
than this?
From: lordSnooty@cup.portal.com (Andrew - Palfreyman)
Newsgroups: sci.electronics
Subject: FM Subband Digital Encoding
Date: Tue,  6 Oct 92 12:21:33 PDT
Organization: The Portal System (TM)
Distribution: world
  <1992Oct05.172142.5600@ssc.com> <1992Oct6.171812.7036@b30.ingr.com>

How is this done? - is there a variety of methods, or just one?

Andrew Palfreyman
Organization: The American University - University Computing Center
Date: Thu, 1 Oct 1992 00:26:01 EDT
From: <ZHAO@auvm.american.edu>
Newsgroups: sci.electronics
Subject: Need 16450 for serial port.

Does anyone know where I can find a 16450 for serial port. My 386 needs
another port. Maybe soneone has abandent I/O cards and willing to sell
for $$$.  Please E-mail to me.

Thanks in advance.
                                   Ching-Wa
Newsgroups: sci.electronics
From: dale@ldgo.columbia.edu (dale chayes)
Subject: Re: Need small tool to cut pcb board
Summary: reall small: razor blade
Organization: Lamont-Doherty Geological Observatory
Date: Tue, 6 Oct 1992 14:03:16 GMT


> In <Bvnv3y.89B@acsu.buffalo.edu> v064mb9k@ubvmsb.cc.buffalo.edu (HELLO) writes:
> 
> 
>  I am working on a device that I want to manufacture in short numbers.
> The pc board dimensions are roughly 3*3 inches. Its much easier
> to cut my own from stock. Is there a cheap or inexpensive tools that
> could cut 1/16th inch double sided clad board neatly?

	A shear is best, but expensive and not commonly found in home or
basement shops. Any tin knocker's (affectionate term for sheet metal
worker) shop can do the job cheaply (as already mentioned.)
(Fiberglass is tough on shear blades too.)

	A band saw with a fine tooth blade will work, but not for
long. The (fiber)glass boards are very abrasive and dull the blade
quickly. Same for hacksaw blades. Carbide blades are avaiable for
bandsaws, but I've never used one on glass board stock. I just use an
old worn out blade to avoid upsetting our machinist's.

	You can put a fine tooth carbide blade in an ordinary table
saw and it will work fine. The rip fence will aid in gettting square
corners. 

	I recently had to make a "Frankenstien" (scab two pieces of
prototype board together) without benefit of power tools. I scribed
both sides of the board using a razor knife using a steel machinists
scale (ruler) for a guide and then broke the board along the (deep)
scribe lines. Flexing the board a few times helped it part cleanly.
This technicque is definitely not recommened for production  use,
but it worked in a pinch. 

	However you cut the boards, you can clean up the cut edge with
an ordinary hand file. This has at least two benefits: breaking the
sharp (and or slightly rough) edge will reduce the possibility of
getting cut, and it will recess the plated surface a tiny bit from the
edge which can help avoid grounding against the chassis in some
mounting arangements.

Have fun,
-Dale
-- 
Dale Chayes Lamont-Doherty Geological Observatory of Columbia University
Route 9W, Palisades, N.Y.  10964	dale@lamont.ldgo.columbia.edu
voice:	(914) 359-2900 extension 434	fax: (914) 359-6940
From: Duke.of.Canterbury@mailbox.bison.mb.ca (Duke of Canterbury)
Newsgroups: sci.electronics
Subject: Re: Cable TV bill (was Re: Cable "silver bullets")
Date: 24 Sep 92 23:53:09 CST

Organization: SPARK's R US
Reply-To: bender@oobleck.eng.sun.com

sorgatz@avatar.tti.com (sorgatz) writes:

: They are responsible for the whole 'Norman Lear' etal style of crap
: sitcoms and they pretend that the stuff is "art". My answer: CANCEL THE
: CABLE! REFUSE TO WATCH THE SHOWS OFF THE AIR! WRITE THE SPONSORS and remind
: them that you will NOT BUY their products because they are sponsoring such
: garbage!

read a book...

mike

 * Origin: The Electronic Mailbox (1:348/7.0)

Newsgroups: sci.electronics,rec.audio
From: ragee@vdoe386.vak12ed.edu (Randy Agee)
Subject: Re: decals
Organization: Virginia's Public Education Network (Richmond)
Date: Thu, 01 Oct 92 14:09:01 GMT

LABELON, 10 Chapin Street, Canandaigua, NY 14424-1589,
1-800-428-5566 makes a
Laser Film Self Adhesive Sheet that you can run through a laser
printer.  The product number is CG-430 and may be carried in
many printer supply stores.  I stumbled on it by accident and
found that I could make all the chassi labels and designs I
wanted very easily using my PC, graphics software and fonts.  
-- 
================================
Randy T. Agee                     
Virginia Department of Education
Richmond, VA
Newsgroups: sci.electronics
From: heyes@dadev.cebaf.gov (Graham Heyes)
Subject: Flyback transformers...
Organization: Continuous Electron Beam Accelerator Facility
Distribution: sci.electronics
Date: Mon, 5 Oct 1992 15:44:37 GMT

I have a monitor which is emitting an annoynig high pitch
squeel. I guess htat the flyback transformer is causing 
this. Is there any quick and easy way to fix the problem 
short of replacing the transformer? I can see a bolt which
holds the transformer together but I can't get to it 
without unsoldering the transformer from the board.

	Graham Heyes
From: dino@inqmind.bison.mb.ca (Tony stewart)
Newsgroups: sci.electronics
Subject: Electron Microscope for sale
Date: Thu, 01 Oct 92 00:47:23 CDT
Organization: The Inquiring Mind BBS  1 204 488-1607

We have an elctron microscope for sale that has been unsed for the last 
4yrs  of its 10yr life. It was used for examining parts 5k to 10Kx power 
magnification. It has zoom control, a BW monitor aand a camera 
attachment.  Any University's or company with a reasonable offer (>10K) 
for a $.5m machine can get it by replying to me.

dino@inqmind.bison.mb.ca
The Inquiring Mind BBS, Winnipeg, Manitoba  204 488-1607
From: mcovingt@aisun3.ai.uga.edu (Michael Covington)
Newsgroups: sci.electronics
Subject: Re: Stumped by op-amps
Date: 7 Oct 92 00:23:34 GMT
Organization: AI Programs, University of Georgia, Athens

Might be a good idea to read H&H from the beginning.  You want an AC
amplifier with a gain of about 50.  (Remember that dBm compares power,
but amplifier gain is normally given as voltage gain, and if input
and output impedances are equal, dB power gain = 20 log[10] voltage gain.

The capacitors in the AC amplifier must be large enough to handle audio
frequencies.  That means that their reactance at the lowest frequency of
interest (maybe 50 Hz) must be appreciably lower than the resistance of
the resistors that are in series with them.

You will either need split power supplies (e.g., two 9-volt batteries),
or need to bias the op-amp for single supply operation.

Finally, when dealing with millivolt-level signals, use a low-noise
opamp, such as the TL081/2/4 family (available at Radio Shack).

-- 
:- Michael A. Covington     internet mcovingt@uga.cc.uga.edu 
:- Artificial Intelligence Programs       phone 706 542-0359
:- The University of Georgia                fax 706 542-0349
:- Athens, Georgia 30602 U.S.A.          amateur radio N4TMI
Newsgroups: sci.electronics
From: root@torinet.com (Superuser)
Subject: Tektronix 2235 100 MHz Dual Trace Scope for sale
Organization: Torinet Systems, Inc.
Distribution: misc.forsale,misc.forsale.computers,misc.forsale.wanted,sci.electronics,sci.physics
Date: Sun, 27 Sep 1992 20:13:43 GMT
Keywords: Tektronix

Just as stated above:

Tektronix 2235 Oscilloscope

- 100 MHz
- Dual Trace
- Calibrated on Sept 90
- Two 1x,10x probes included
- Front Clip-On Panel Cover
- Tektronix equipment has the HIGHEST resale value in the industry.

This is an excellent scope. It has been well taken care of and functions
perfectly. The retail value of this scope (new) is around $ 1950 US. It was 
purchased used for just over $ 1700.00 CDN. 

$ 1500 CDN + Shipping or Best Offer. 
It MUST sell. I will concider all offers: Best one takes it with them.
--
Torin Walker (Super)         root@torinet.com           Voice (416) 886-8054
Torinet Systems, Inc.       uunet!torinet!root          Fax   (416) 756-0720
Newsgroups: sci.electronics
From: nduong@rhea.trl.OZ.AU (Nguyen Duong - Integrated Communication Services)
Subject: Re: 8051 multitasking kernel, comments please
Keywords: 8051 real-time multitasking kernel
Organization: Telecom Research Labs, Melbourne, Australia
Date: Mon, 5 Oct 1992 00:04:18 GMT


>UCOS is implemented on the 80188, but full source is provided and it
>should be portable to other architectures.  You can get UCOS from the
>Embedded Systems BBS at 1 (415) 905-2689 or in library 12 of CLMFORUM
>on CI$.

Do you know if ftp is available also?
From: mcs@wet.UUCP (Gil Nardo)
Newsgroups: sci.electronics
Subject: Re: Any reason for GND around perimeter of PC Board?
Date: 4 Oct 92 06:44:33 GMT
Organization: Wetware Diversions, San Francisco

jeremym@fraser.sfu.ca (Jeremy Thomas McDonald) writes:
> I have looked at a some examples PC boards and have noticed that some
> have a thick ground trace around the perimeter of the board.  Any
> reason for this?

If you look carefully, you will also notice a capacitor
attached between the Vcc of the chips and to the grounding
perimeter.  The idea is to shunt unwanted high frequencies
to ground ASAP.  These are signals that would otherwise
interfere with digital operations.
-- 
Gil Nardo                  | mcs@wet.com
Migrant Computing Services | (415)664-1032
1032 Irving Street, #435   |-----------------
San Francisco, 94122       | Supernova = *!
Xref: sparky sci.electronics:16618 alt.sci.physics.acoustics:273
From: kdrolt@athena.mit.edu (Kenneth D Rolt)
Newsgroups: sci.electronics,alt.sci.physics.acoustics
Subject: Re: Audio + Speaker Design References
Summary: speaker stuff
Keywords: loudspeakers    designing    useful books
Date: 6 Oct 92 12:37:36 GMT
Article-I.D.: athena.1992Oct6.123736.16328
Organization: Massachusetts Institute of Technology

in a previous article <1992Oct5.232918.24805@megadata.mega.oz\
.au> writes about a useful book ["... Otherwise look
out for a book (audio engineer's bible) by Berenak (I can't remember
the exact title)."   the author is Leo L. Beranek, and the original
hardcover has been out of print for over 10 years (publ. by McGraw-Hill,
1954).  however, the book is reprinted now by the American Institute of
Physics for the Acoustical Society of America, in paperback i think.
the book costs less than $20....ahhh it's exactly US $20 for one, and
$17.50 each for 5 or more to one address.  reprinted in 1986, 491 pp.
the AIP/ASA also reprint a number of notable other books.  write to:
Acoustical Society of America, c/o: Elaine Moran, 500 Sunnyside Blvd.
Woodbury NY  11797.  "All orders must be in US funds.  checks of money
orders must be drawn on US banks."

another good resource for loudspeaker projects is the SpeakerBuilder
magazine, in Peterborough NH.  i posted in rec.audio a while ago, and
i still have the address/info somewhere in my .files.  email me and
i'll send it or repost it.

*****************************************************************
	|\   /|   |  ```|```    Underwater Acoustics
	| \ / |   |     |
	|  '  |   |     |	kdrolt@athena.mit.edu
*****************************************************************
From: mycal@netronix.com (Mycal Johnson)
Newsgroups: sci.electronics
Subject: Ultra-stable FM transmitter? 
Distribution: world
Date: Thu, 01 Oct 92 16:27:44 GMT
Organization: Netronix, Inc.


In article <1992Sep30.125521.1@acad2.alaska.edu> aslt@acad2.alaska.edu writes:

  > 
  > In article <1992Sep30.050919.18881@gagme.chi.il.us>, wdp@gagme.chi.il.us (Bill  >  Pfeiffer) writes:
  > > 
  > > The Ramsey Electronics FM-10 kit is said to be the absolute
  > > best available.  It is stereo, but can be made mono for
  > > slightly better s/n ratio.  Very good audio quality and
  > > operates on a couple of AA penlight batteries.
  > > 
  > > Said to transmit a stable FM carrier for several hundred feet w/builtin 
  > > antenna whip.  Dont have address handy, maybe someone else does.  Good Luck
  > 
  > I have tried using the FM-10, and it is not very stable.  It cannot be used 
  > with 'digitally' tuned receivers over a long period.
  > 

The FM-10 can be made much more stable by replacing the osc capacitor with
with a more stable one.  I have had no problems listening to my FM-10
with my sony digital headphones for hours.

read the FM-10 info sheet for more info.

mycal


-----------------------------------------------------------------------------
                                     ?
Pirate Radio?  Whats that?        @ o o @                mycal@netronix.com
                                     O

                            Just Say Know to Drugs.
From: lihan@ccwf.cc.utexas.edu (Bruce G. Bostwick)
Newsgroups: sci.electronics
Subject: Re: VCR rewind and tape head question
Date: 29 Sep 92 00:58:24 GMT
Organization: The University of Texas at Austin, Austin TX

In article <1992Sep24.031152.20380@nmsu.edu>, rscott@spock.NMSU.Edu (Joseph Good) wrote:
> 
> Please settle this argument for me....
> 
> My room-mate and I are arguing over a very silly matter here.
> He refuses to let anybody rewind on his VCR because he insists
> that the tape head never retracts from the tape.  Because of this,
> when you are rewinding, the tape is wearing down the head all the time.

Well, most VCR's are even more paranoid about tape and their heads
than your friend.  In the original VHS system, the tape is retracted
completely into the cassette at all times unless the VCR is actually
PLAYING or RECORDING the tape.  You can hear it loading the tape onto
the heads (the whirring and clunking right after you press PLAY or
REC) and unloading it (more whirring and clunking after you press
STOP) every time you start and stop the tape.  It will also
automatically stop and unload the tape if left in PAUSE/STILL for more
than 5 minutes -- try this as an experiment.

Some of the newer VCR's engage the tape to the heads immediately upon
loading the cassette, in order to reduce the delay between pressing
PLAY and seeing recorded video, but otherwise they are the same -- and
they do disengage the tape if you don't do anything within 5 minutes
of inserting the cassette.

VCR's ALWAYS rewind and fast-forward with the tape retracted into the
cassette -- the guideposts and head surfaces are highly polished and
would be damaged very quickly if this were not done.  (Also, the
loaded tape path is rather convoluted and friction would be
excessive.)  Even if they did not, the tape would be rendered
unplayable long before the heads were damaged.

-- 
<BGB>
lihan@ccwf.cc.utexas.edu        /     "I can't complain,
(really Bruce Bostwick)        /   but sometimes I still do"
from the great state of TEXAS /         --Joe Walsh--
From: geb@cs.pitt.edu (Gordon Banks)
Newsgroups: sci.med
Subject: Re: Arrogance, arthritis, & Banks
Date: 28 Sep 92 15:07:02 GMT
Reply-To: geb@cs.pitt.edu (Gordon Banks)
Organization: Univ. of Pittsburgh Computer Science

In article <8ekbD5q00WCGAK6Y51@andrew.cmu.edu> moose+@CMU.EDU (Esther Filderman) writes:
>
>> >>I try to work with Doctors, I'm just sick of the 'ones' who
>> >>say they can't help you then charge you $75 or $150 just to
>> >>tell you this.

>completely unreasonable.  I believe that, should the doctor be unable to
>help the patient, an attempt should be made to refer the patient to
>someone who -can- help.  While I feel that the doctor should do this out
>of his or her own sense of duty (to see that a patient gets better), I
>also believe it's the patients responsibility to ask for a referral (to
>a specialist, or someone for a second opinion) if the doctor seems to
>shrug off their problem.
>

I certainly agree with you.  But there are many patients for which
medicine can not help.  It can become clear after a while when this
seems to be the case.  Simply continuing an endless chain of specialists
is not the answer and will eat up all the patient's money as well
as running the risk of someone hurting the patient.  If you keep
going to surgeons, eventually you'll find one that will "try to
help" when he shouldn't, and the patient will be worse off.  I've
seen this time and time again with patients who have back pain
and nothing shows up on myelogram or MRI.  9 times out of 10 if
they get operated on anyway, they will be worse off.


-- 
----------------------------------------------------------------------------
Gordon Banks  N3JXP      | "I have given you an argument; I am not obliged
geb@cadre.dsl.pitt.edu   |  to supply you with an understanding." -S.Johnson
----------------------------------------------------------------------------