HDTenEightyP/NetNews huggingface dataset:
From: sasbge@ant.unx.sas.com (Gantt Edmiston)
Subject: HELP needed on SIMM ID
Originator: sasbge@ant.unx.sas.com
Date: Mon, 14 Sep 1992 13:42:36 GMT
Reply-To: sasbge@ant.unx.sas.com
Organization: SAS Institute Inc.


I picked up eight SIMMs at a Ham Fest a while back and I just
got around to trying to figure out what I might be able to do
with them.  Each SIMM was packaged in it's own static bag and 
they were all boxed in a larger cardboard container with a
few odd numbers some of which contained the numbers:

  "32MB upgrade"

This was what actually intrigued me into buying them for the ridiculous
price of $5.00!  Now I need some help with identifying just what I have.

Each SIMM has 9 chips.  Each chip has 20 SMT (surface mount) "legs".
Each SIMM has 30 "pads" on the front and 30 pads on the back for a
total of 60 edge contacts (pads).  Each chip has the following stuff
printed on it:

  JAPAN A002
  9019 5NNK
  HM511000AJP10

On the back of the SIMM there are no components, but there is a
set of numbers:  HB56A19B-10A
                  9023 XQ

Each SIMM is 3.5 inches X .75 inches.  There is a small hole through
the PCB on each end (I assume for mounting clips).

If anyone recognizes this, please send me more information.  I am 
curious to know the capacity of the SIMM, possible hardware which
might make use of it and current market value.  Thanks and you
may post or E-mail back to me.


-- 
-----------------------------------------------------------------------------
Gantt Edmiston - SysAdmin       |If you always do what you have always done, 
SAS Institute Inc.              |you'll always get what you've always gotten!
Quality Assurance - V416        +--------------------------------------------
Cary NC 27513 919-677-8000 x6091|          sasbge@ant.unx.sas.com
-----------------------------------------------------------------------------
 I admit that back in my college days, I wrote FORTRAN; but I didn't compile!
-----------------------------------------------------------------------------
From: smithj@hpsad.sad.hp.com (Jim Smith)
Date: Tue, 8 Sep 1992 18:15:09 GMT
Subject: Re: TROUBLE TRYING TO FIND A WAY TO DRIVE ALPHA NUMERIC DISPLAYS
Organization: HP Signal Analysis Division - Rohnert Park, CA
Newsgroups: sci.electronics

In sci.electronics, v064mb9k@ubvmsb.cc.buffalo.edu (NEIL GANDLER) writes:

>    I am trying to design a stereo receiver and would like to indicate
>    functions and status using alpha numeric displays. For example for
>    my surround sound processor. When someonechooses matrix. The word
>    matrix appears on the display in alpha numeric characters. Is there
>    a chip that will convert a 4 or 8-bit signal and output an alpha
>    numeric display to the appropriate letter you choose. Then I could multiplex
>    this and have a 6-segment alpha numeric driver. I would appreciate any
>    help.

You can buy an entire alphanumeric display that accepts serial data and
displays ASCII characters.  The Optrex LN2111R-10, for example, is a 
2 line by 16 character display, and is $20 in single quantities from Digikey.
I suggest you call Digikey at 1-800-344-4539 and ask for their latest
catalog.  (No, I don't have anything to do with Digikey.)

Good luck.
	       - jim
From: smckinty@sunicnc.France.Sun.COM (Steve McKinty - Sun ICNC)
Newsgroups: sci.electronics
Subject: Re: AC power inverter questions?
Date: 15 Sep 1992 08:03:51 GMT
Organization: SunConnect
Distribution: world
NNTP-Posting-Host: hardy.france.sun.com

In article <1992Sep14.210900.1@acad2.alaska.edu>, aslt@acad2.alaska.edu writes:
> This is probably a stupid... *ahem*, well, a question that reveals how just how
> much I have forgotten, but it is one that I have thought about frequently
> over the years, and the discussions about power supplies and dynamotors
> and whatnot resurrected it in my mind...
> 
> Many inverters use square waveforms rather than sinusiodal waveforms. 
> Intuitively, though, it seems that significantly less energy will be 
> transferred from the primary to the secondary of the transformer using 
> square waves (input changes at discrete places in the waveform) than 
> would be transferred using sinusoidal waveforms (input continuously changing)
> What am I missing?

I don't think you're missing anything, square waves are used simply because
they're easier & cheaper to create. As far as efficiency goes, an oscillator
producing square waves will have switching elements (usually transistors)
either on or off, so they run cool. Generating sine waves requires the
transistors to operate in a linear fashion, and for most of the cycle they
will be only partially on. As a result they will dissipate a lot of heat
which calls for big transistors, and also a lot of wasted (and precious if
coming from a battery) power. 

As a thought, could you do do something creative with pulse-width-modulation
to create pseudo sinewaves, with only switching transistors? Integrate them
in the transformer?


> 
> Along the same lines, presumably the outputs of inverters are square waves
> rather than sinusoids (I'm speculating, I don't know).  It seems you could 
> do some serious damage to the motors in some devices, drills, margarita 
> blenders, refrigerators, freezers, and such.  Any comments?

I'd expect motors to be OK, they have enough inertia to ride out the
square ends of the waveform. Anything which relied on sinewave input
for phase-control of voltage (drill controllers, light dimmers, some TV's)
would have problems.


Steve

-- 
Steve McKinty
SUN Microsystems ICNC
38240 Meylan, France
email: smckinty@france.sun.com	   BIX: smckinty
From: rmf@bpdsun1.uucp (Rob Finley)
Newsgroups: sci.electronics
Subject: Re: bnc connector
Date: 10 Sep 92 04:01:15 GMT
Organization: Harris Allied Broadcast Div., Quincy, IL


Here is a blast from the last time this was answered:


>It's Bayonet Neill-Concelman, after the two engineers that designed
>it.
>
>`TNC', by the way, is Threaded Neill-Concelman.
>
>The idea that it's `Berkeley Nucleonics Corporation' is an urban legend.
>
>73 de ke9tv/6, Kevin



Here, at the big-H, we use BNC for video applications (75ohm), and for
applications 5KW and under, we use the N type of threaded connector (50 ohm).


N-type connectors are about 3/4" dia.



-----
"We know what the reponse of the American people will be, and it's not
attractive.  They really do believe the Bill of Rights gave them unleaded
regular for $1.06 a gallon, and they better get it or, by God, they'll get
the bums out of Office."  -- Energy Secretary James Watkins on taxing energy.

quintro!bpdsun1!rmf@lll-winken.llnl.gov or uunet!tiamat!quintro!bpdsun1!rmf
From: moisan@silver.lcs.mit.edu (David Moisan)
Newsgroups: sci.electronics
Subject: Gear needed for Realistic 16-518 VCR
Summary: Need sources for loading-motor gear
Date: 15 Sep 92 16:55:51 GMT
Followup-To: poster
Organization: MIT Laboratory for Computer Science

I've a problem with a Realistic 16-518 VCR.  The cassette does not load 
properly, sometimes trying to thread the tape before the cassette is fully 
inserted.  I've found a broken gear in the loading motor mechanism.  

Is it feasible to repair, or shall I farm it out?  It's a bit over a year old.
If it's fixable by me, where can I get the parts?  I've fixed VCR's before, 
but never have I had to change out gears. 

Thanks in advance.

-- 
| David Moisan, N1KGH    /^\_/^\   dmoisan@pro-angmar.alfalfa.com |
| 86 Essex St. Apt #204 ( o ^ o )  moisan@silver.lcs.mit.edu      |
| Salem. MA 01970-5225     | |                                    |
\-----------------------------------------------------------------/
From: killeen@spcvxb.spc.edu (Jeff Killeen)
Newsgroups: sci.electronics
Subject: Re: Macrovision
Date: 15 Sep 92 02:28:02 GMT
Followup-To: sci.electronics
Organization: SPC Community Access System

In article <8070@lee.SEAS.UCLA.EDU>, chang@edison.seas.ucla.edu (Fengteng Chang) writes:
> In article <1992Sep13.180739.25369@steam.rome.ny.us> strike@steam.rome.ny.us (Strikemaster) writes:
>>killeen@spcvxb.spc.edu (Jeff Killeen) writes:
>>>Keep in mind 8mm and Hi8mm units are _not_ effected by Macrovision.  Owners of 
>>>Sony GV-8/200/300/500's have long ago discovered this happy fact.  Also I 
>>>believe all Beta units are safe from Macrovision.
>>Hmmm.  If "The Addams Family" is Macrovision encoded, then I beg to differ
>>with you.  Recorded from a JVC S-VHS deck to the CCD-V700 camcorder, I get
>>the same brightness/contrast changes I expect from a VHS tape.
> 
> I tried to record "Lady and Tramp" from JVC6700 to Sony TR81.
> I also get the brightness/contrast changes.

Was the TR81 connected to the TV or the JVC6700?  If there is a VHS VCR any 
place in the playback path the Macrovision will cause this problem.  Everytime 
I have tracked this down the person had plugged the 8mm unit into to VHS unit.
From: Ted_Eugene_Viens@cup.portal.com
Newsgroups: sci.electronics
Subject: Re: Phone circuit projects...
Date: Sun,  6 Sep 92 15:53:31 PDT
Organization: The Portal System (TM)

>I'm trying to find a book or books or just schematics from some kind soul,
>that would enable to me to have a 2-line system (modifying a 1-line phone)
>that would have a light for the ringer (on each line), and same light
>would light (and stay lit) while that line was in use. So, I need plans
>for a 2-line HOLD circuit, and plans to light da light of a line in-use. BTW,
>the in-use light should work if an extension phone is in use also, not just
>the attached phone to said circuit.
>
>----------------------------------------------------------------------
>Dan Keldsen                     Working on a Brain-to-
>djk@world.std.com               MIDI convertor...
>Somerville, MA                  Anybody willing to sport
>BERKLEE College of Music        the necessary "elective surgery" ??
>----------------------------------------------------------------------
>

Hello, Dan.
Golly, Radio Shack sells a two line phone just like that.
Part number 43-373.  It list for $59.95 and is on sale this month for
$39.95.  (At least in Houston, TX.)  This must be cheaper than any 
combination of parts and time would cost you.
Good luck...  Ted..

Ted Viens.
From: pcl@engr.uark.edu (Peter Laws)
Newsgroups: sci.electronics
Subject: Re: Question about origin of name of BNC connector
Keywords: BCN connector, name origin
Date: 9 Sep 92 01:31:36 GMT
Organization: University of Arkansas

das50852@uxa.cso.uiuc.edu (dan) writes:

>lmbrown@vela.acs.oakland.edu (lmbrown) writes:
>
>>I think that the BNC stands for Bayonet Connector.  Can anyone confirm or
>>disprove this?
>
>I think so too.  I have a lab manual that uses the two terms 
>interchangeably.  Whether or not BNC stands for BayoNet Connector,
>is something I don't know.
>
>
>				dan
>
>-----
>artie@uiuc.edu

Oh Yeah?  What about the TNC connectors on Cellular fones?  They are
*almost* the same as BNC, but are *T*hreaded.  Could the 'N' mean
something else?

Peter Laws            |"The '90s are gonna make the '60s|    pcl@engr.uark.edu
n5uwy@ka5bml.ar.usa.na| look like the '50s"--D. Hopper  | plaws@uafsysb.bitnet
Newsgroups: sci.electronics
From: geb1@ra.msstate.edu (Granville Barker)
Subject: Re: 3rd Party PADS Manuals?
Keywords: PADS schematics
Organization: Mississippi State University
Date: Sat, 12 Sep 1992 07:57:30 GMT

If you place 2 14-pin IC's side by side, in line with each other using PADS,
then you tell it to connect Pin 3 of the first IC to Pin 3 of the second IC,
will PADS (REAL or SHAREWARE) find a route to connect those two pins???

I have tested this on serveral of the Shareware AUTO-Router packages, and most
of them have choked!

If a package can't do a simple route like that, what can it do???

Thanks,

Granville Barker
geb1@isis.msstate.edu
From: gude@uniwa.uwa.edu.au (David J W Emrich)
Newsgroups: sci.electronics
Subject: multiplying analog signals
Date: 7 Sep 1992 23:01:45 +0800
Organization: The University of Westrn Australia
NNTP-Posting-Host: uniwa.uwa.edu.au

Just a note to say thanks to the people who have responded to my post
a couple of days ago.  The idea seems to be to go 4quad multipliers,
which I now remember reading about, it must have been them that I was
thinking of when I thought op-amps.

Thanks to (in no particular order) Eric Smith, Greg Burley, Don Taylor,
Mark Zenier, Dave Bell.


[dav]    aka
David Emrich
gude@uniwa.uwa.edu.au

Newsgroups: sci.electronics
From: pierson@empror.enet.dec.com (dave pierson)
Subject: Re: Dynamotors;
Organization: Digital Equipment Corporation
Date: Mon, 14 Sep 1992 14:53:57 GMT

In article <xdwn!8m@dixie.com>, jgd@dixie.com (John De Armond) writes...
>In article <larryd.716229475@milton> larryd@milton.u.washington.edu (Larry
>Desoto) writes:
> 
>>Dynamoters...you forgot the true dinosaurs of High Voltage.  The proper
>>technique when using dynamotor powered ARC-5 transmitters was to press
>>the mike key and wait a second or so until the motor was up to speed.
>>It really brings back memories of adding another battery to the car's
>>electrical system to bring the voltage up to 24 volts for the dynamoters.
> 
>I have the Mother of all dynamotors.  About 1200 volts at an amp or so.
>No idea what it came off of.


	Ahemmmmmmmm.  Chicago, Milwaukee, St Paul & Pacific RR.  Electric
	Zone, Harlowton, Mt to Avery, ID.  At 30 mile intervals, rotary
	convertor substations, 2400 VAC 3 phase in, 3,000Vdc out.  (I
	disremember the ratings, but think of kiloamps....).  All torn out now.
	Or any transit system, til recently 600 VDC at thousands of amps, from
	the same sort of rigs.  Stood 15 feet high.

	In these sizes, efficiencies could approach 90%.

thanks
dave pierson			|the facts, as accurately as i can manage,
Digital Equipment Corporation	|the opinions, my own.
146 Main St			|I am the NRA.
Maynard, Mass	
01754				pierson@majsty.enet.dec.com
"He has read everything, and, to his credit, written nothing."  A J Raffles
From: titus@calvin.phys.ucalgary.ca (Titus Mathews)
Newsgroups: sci.electronics
Subject: HELP!! NEED PC WATCHDOG TIMER
Date: 14 Sep 92 21:50:24 GMT
Organization: Institute for Space Research

Hi!  We are in great need of a plug-in board that will reset our 386 
based PC if the PC hangs.  I imagine that this board would work by 
having the PC continually access it in some way, and if it hasn't been 
accessed in some defined period of time, it resets the computer.  It also
should have a serial port on it.

This is for an instrument that will run unattended in the high arctic.  
Deadlines are fast approaching, and I've only received one reply from my 
previous posting (it wasn't quite what we needed).  Any help would be
greatly appreciated!  Please email me at titus@phys.ucalgary.ca or post to
this group.  Thanks!!


T.  =8)
From: warren@CAM.ORG (Robert Warren)
Newsgroups: sci.electronics
Subject: NTSC transmission over phone lines?
Date: 5 Sep 92 01:53:51 GMT
Organization: Communications Accessibles Montreal, Quebec Canada

Howdy all,
	I've been trying to work out a way to send a NTSC signal via phone
lines. I have been so far succesfull in transmitting it via a twisted pair,
but a phone line is a new ball game. Is there any way I can send video using a
transformer to isolate the DC from the line?

What would be the easiest way to do it? Would it be easier to run it over a 4
wire telco hybrid?

Answer (news/email) are welcome. I'll summerise if intrest is shown.

Regards,
	Robert Warren
	warren@cam.org
Newsgroups: sci.electronics,comp.sys.sun.hardware
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: Sparcstation serial port
Date: Sun, 13 Sep 1992 00:53:25 GMT
Organization: U of Toronto Zoology

In article <18n1h2INNa88@grapevine.EBay.Sun.COM> smckinty@sunicnc.France.Sun.COM (Steve McKinty - Sun ICNC) writes:
>That depends. RS-423 uses +/- 5v and RS-232 uses +/- 15v, although most
>RS-232 implementations seem to use +/- 12v because they're already available
>on the board.

Not quite right.  RS-423 does indeed use +-5, with enough tolerance on
those values that it can run from +-5 power supplies.  The RS-232C specs
allow quite a wide range.  The most usual 232 voltage is +-12, because
those voltages are traditional power-supply voltages and are within the
232 specs.  However, you do *not* need to go that high.  The 232C
spec only demands that the outputs be between +-5 and +-15 under normal
load.  (The receivers are required to tolerate anything between +-3
and +-25; it's 3 not 5 for noise margin, and 25 not 15 for compatibility
with 232B, which let drivers send up to +-25.)  +-12 is perfectly
legal.  So is +-9, which has gained popularity because it's about what
you get by doubling and inverting +5, which most modern 232 drivers do.
Note that you generally *cannot* meet the spec from +-5 supplies --
although some scummy manufacturers did it that way anyhow -- because of
power-supply tolerances and voltage drop in the drivers.  You can actually
get away with a lot in 232, because the receivers are very tolerant.

Old Suns spoke only 423, which is interoperable with 232C *provided* that
the 232C implementation really does follow the rules.  The new ones can
be switched between 423 and 232C.
-- 
There is nothing wrong with making      | Henry Spencer @ U of Toronto Zoology
mistakes, but... make *new* ones. -D.Sim|  henry@zoo.toronto.edu  utzoo!henry
From: wb8foz@skybridge.SCL.CWRU.Edu (David Lesher)
Newsgroups: sci.electronics
Subject: Re: A much better power inverter design
Date: 12 Sep 1992 19:37:48 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

# So I tried a mechanical method using 2 high
# >speed quality relays. 

# Once again, we've gone 'round the full circle.

# Back in olden days, when dinosaurs roamed the earth, yea, even before
{}
# generally where larger ammounts of "B+" were required, things called
# "Vibrators" or "Vibrapacks" were used.


Hey,
Now don't be so hard on the guy. .

How could *he* know that what he REALLY wants

is a dynamotor!

--
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
From: klimasewski@fccvde.enet.dec.com (My name is...)
Newsgroups: sci.electronics
Subject: What is this 40pin chip?
Date: 13 Sep 92 15:46:21 GMT
Organization: Digital Equipment Corporation

What type of 40pin chip is this?

D8749H 3006
207041-001B
INTEL 80

The chip has a window so I assume it can be programed/erased.
Can I copy this chip?
                                                  thanks,
                                                      Ken
From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: sci.electronics
Subject: Dynamotors; was: Re: A much better power inverter design
Date: 11 Sep 92 19:31:52 GMT
Organization: University of Georgia, Athens

In article <larryd.716229475@milton> larryd@milton.u.washington.edu (Larry Desoto) writes:

>Dynamoters...you forgot the true dinosaurs of High Voltage.  The proper
>technique when using dynamotor powered ARC-5 transmitters was to press
>the mike key and wait a second or so until the motor was up to speed.
>It really brings back memories of adding another battery to the car's
>electrical system to bring the voltage up to 24 volts for the dynamoters.

That, I'm told, is why police code numbers for messages begin with
"10-" (as in 10-4, 10-8, etc.).  The first syllable has to be
uninformative because it might get clipped off.

My sources also tell me that "10-666" is a CB curse word.
-- 
+ Michael Covington - Artificial Intelligence Programs - U of Georgia - USA 
+ Unless otherwise noted, these are private opinions, not official statements.
Newsgroups: sci.electronics
From: jacobsen@itexjct.jct.ac.il (Joel Jacobsen)
Subject: BR1616 in place of CR1616 ?
Organization: ITEX, Jerusalem, Israel
Date: 8 Sep 92 16:00:14 GMT


 Can I replace the battery in a CASIO DBC-61 ( 50 databank watch/calc. )
from CR1616 to BR1616  for longer battery life?

      Joel

Xref: sparky sci.electronics:15244 comp.dsp:2089
From: batavia@aludra.usc.edu (Parag Batavia)
Newsgroups: sci.electronics,comp.dsp
Subject: Video digitizer submodule
Date: 4 Sep 1992 15:43:03 -0700
Organization: University of Southern California, Los Angeles, CA
Distribution: usa
NNTP-Posting-Host: aludra.usc.edu

Hi...Does anyone know of any companies which make a hybrid style RS-170 
video digitizer module? I'm looking for something which can provide 8-bit
video data, and preferably a pixel clock and start of frame signal...Know of
any manufacturers of such devices or even related products? Thanks much...

Parag Batavia
USC Robotics Lab

parag@mensa.usc.edu
batavia@usc.edu
From: stuartw@ccu1.aukuni.ac.nz (Stuart Woolford)
Newsgroups: sci.electronics
Subject: Re: Need help to build an Audio Amplifier
Date: 14 Sep 92 00:07:51 GMT
Organization: University of Auckland, New Zealand.

pandey+@cs.cmu.edu (Manish Pandey) writes:


> I am interested in constructing an audio amplifier and I need some
>help from fellow-netters who may have some experience building one.

> My specifications include the following:

__Spec's deleted__

> Among the options I am exploring are the following

>     1. Using LM12, the power OP AMP manufactured by National Semiconductor.
>        It can deliver upto 150 W of power ( of course limited by pwr supplies)

>     2. Using TDA1514 manufactured by signetics. 
>        Powerout Max = 40W into 8ohms.

try a discrete design, it will be cheaper, better quality, more powerfull,
and they are not too hard to build ( read:easy.. ), look in electronics
mags for some reasonable designs ( I have a very nice mosfet design that is
just what you want, but it's a little hard to send, mail me for more info ).

--------------------------------------------------------------------------
stuartw@ccu1.aukuni.ac.nz


			>>>>In VI Where Available<<<<
--------------------------------------------------------------------------
From: raoul@eplunix.UUCP (Nico Garcia)
Newsgroups: sci.electronics
Subject: BCD-binary conversion
Keywords: BCD, binary
Date: 11 Sep 92 17:40:30 GMT
Organization: Eaton-Peabody Lab, Boston, MA

Hi. I have a panel display of BCD thumbwheels I'd like to decipher into
binary: 4 or 5 decades of BCD to 12 or 16 bits of binary.  TI used to make
some ROM based parts for this, the '484 and '184 parts, but they're out of
production. They also took something like 11 parts for 4 decades, by
cascading a lot of 6 bit to 6 bit decoders.

Does anyone have either the Jedec files for a reasonably sized EPROM decoder
for 4 decades, or a clever implementation of a several decade decoder in a
PAL? I don't have the board space for ~11 chips for a set of one decade
decoders wired up for decoding 4 decades.

But I could fit ~5 2 decade decoders to get the 4 decades. I'd really prefer
to wire up ~5 and get *5* decades, though.

In addition: has anyone got a decent PAL setup for controlling and
pre-loading the Harris 82C52 UART? It would save me board space and power
over the 6402 I'm using now: the PAL's I'm using are GAL22V10's.

Thanks for the help....
-- 
			Nico Garcia
			CIRL/MEEI
			eddie.mit.edu!eplunix!raoul
Newsgroups: sci.electronics
From: sakaria@vipunen.hut.fi (Sakari Aaltonen)
Subject: What Steve Wants
Reply-To: sakaria@vipunen.hut.fi (Sakari Aaltonen)
Organization: Helsinki University of Technology
Date: Sun, 13 Sep 1992 08:48:14 GMT

Steve Ciarcia wants me to subscribe to Circuit Cellar Ink - The Computer
Applications Journal.

What do YOU think?
-- 
-----------------------------------------------------------------------------
Sakari Aaltonen                             Helsinki University of Technology
Email: sakaria@vipunen.hut.fi
---  You can't keep a Finn down without him getting all red in the face  ----