HDTenEightyP/NetNews huggingface dataset:
From: jim@blade (Jim Rump)
Newsgroups: sci.electronics
Subject: Microfield T8C questions ???
Summary: X
Keywords: X
Date: 13 Sep 92 21:01:25 GMT
Organization: MCGV Stack, Eindhoven University of Technology, the Netherlands.
X-Newsreader: Tin 1.1 PL4

Hi all,

I'm a student who has a 19" monitor (Unisys)  with a Microfield T8C video-card.
With this card a MS-windows driver was supplied. 
Since I'm running X386 on a BSD based system I really would like to
use the T8C to operate with X386. The following questions also applies to 
X386 on a Linux based system.
The questions I have are:

* Are there drivers for the Microfield T8C-card for X-windows. If this is
  the case, where can I obtain this and at what price? 

* I know there is a manual for programming the T8C-card. The name is:
  `Microprogrammer's reference manual for the T8C Color Graphics Controller`.
  Where can I get this manual?

* Does anyone know the adress of Microfield or perhaps an e-mail adress?

An other question I have is if someone has allready succesfully used a
19" monitor connected to a 1MB vga-card e.g. a et4000 based one.

Thanks,

Jim (jim@stack.urc.tue.nl)



--
   \_  \_  \_\_  \_ \_   Jim@stack.urc.tue.nl
    \_  \_  \_  \_   \_ 
     \_  \_  \_       \_     
  \_\_    \_  \_       \_    I,m always seeing an opinion.
Newsgroups: sci.electronics
From: massoud@chemteca.sdsu.edu (Massoud Ajami)
Subject: Re: AC-DC transformer recommendation
Organization: San Diego State University
Date: Thu, 10 Sep 1992 21:47:54 GMT

In article <RODRIGUE.92Sep10161503@diamond.CS.Yale.Edu> rodrigue@CS.Yale.Edu (Joe Rodrigue) writes:
>From: rodrigue@CS.Yale.Edu (Joe Rodrigue)
>Subject: AC-DC transformer recommendation
>Date: Thu, 10 Sep 1992 16:15:03 GMT
>Really dumb question:
>
>I need a transformer to be able to run a tape recorder from a wall socket.
>The tape recorder runs on 6V, 300 mA DC.  I am tempted to buy one from Radio
>Shack but I am afraid it's a piece of junk (it's only $8).
>
>I will obey the will of the people!  Should I go for it?  Please advise.
>
>-- Uncertain.

Go ahead, be brave, make your day, but watch for polarity!


Peace and Prosperity!
  ---==< 110 >==---
From: rwb@alexander.VI.RI.CMU.EDU (Robert Berger)
Newsgroups: sci.electronics
Subject: Re: Where does snow come from?
Date: 11 Sep 92 17:14:43 GMT
Organization: School of Computer Science, Carnegie Mellon

In article <1022@vk2bea.UUCP> michael@vk2bea.UUCP (Michael G. Katzmann)  
writes:
> Most of it is generated by the active devices in the front-end amplifier
> of the tuner (shot-noise, thermal noise etc..), some is just the  
accumulated
> background noise from all the man made sources (finite probability that
> a photon from even the weakest transmitter will reach your set), and a
> few percent is the remnents of the big-bang. (4K background radiation)
> (probably many other natural sources as well).

For a well designed VHF/UHF receiving system for terrestrial 
applications a major source of noise is the 300K thermal noise
from the earth. A receiver with a noise figure of < 3 dB will have
less noise generated in the front end than that.

If you point an antenna at the ground, you can actually meausure the
ground temperature by the amount of noise received. This is done
by remote sensing satellites.
Xref: sparky sci.electronics:15443 comp.sys.sun.hardware:4316
From: smckinty@sunicnc.France.Sun.COM (Steve McKinty - Sun ICNC)
Newsgroups: sci.electronics,comp.sys.sun.hardware
Subject: Re: Sparcstation serial port
Date: 10 Sep 1992 08:37:54 GMT
Organization: Sun Microsystems Federal, Milpitas, CA.
Distribution: usa
NNTP-Posting-Host: hardy.france.sun.com

In article <1992Sep9.203550.25943@athena.cs.uga.edu>, mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
> Can anyone tell me anything about the internal circuitry of the serial
> port in a Sparcstation?

It uses a Zilog 8530 chip, which can provide both asynchronous and
synchronous comms.
 
> 
> Also, am I right in thinking Sparcstation serial ports output + and - 5 V
> rather than the usual 9 to 12 volts on an RS-232 port?
> 

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.

Various models of Sparcstation can be adjusted between RS-423 and RS-232
(using 12v). I don't know exactly how the adjustment is made, you'd need
to ask your local field service office.

Steve

Newsgroups: sci.electronics
From: despair@netcom.com (Scott Hanson)
Subject: Re: Filtering TV Commercials
Date: Mon, 07 Sep 92 22:06:28 GMT
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 

I have a simple and extremely effective method to filter commercials.  I have
not seen a single one in over four years.  The method is defenestration.
Regards.
-- 
Scott Hanson		This has been a recording.
despair@netcom.com
Newsgroups: sci.electronics
From: larryd@milton.u.washington.edu (Larry Desoto)
Subject: Re: 120 HZ oscillator query
Organization: University of Washington
Date: Tue, 15 Sep 1992 15:51:57 GMT

In article <1992Sep11.233617.12368@seanews.akita.com> finneyk@seanews.akita.com (Ken Finney) writes:
>From: finneyk@seanews.akita.com (Ken Finney)
>Subject: 120 HZ oscillator query
>Date: Fri, 11 Sep 1992 23:36:17 GMT
>
>I'm in need of an oscillator that puts out two square waves, 
>180 degrees out of phase, each one 60 Hz and 50% duty cycle.  
>My original idea was to use a MM5369 17 stage divider (with a
>7.15 MHz crystal it would generate a 120 Hz output) to drive
>a flip-flop to generate the two 60 Hz wave forms.  Unfortunately,
>the MM5369 doesn't produce a 50% duty cycle output.  So, does
>anyone know of a IC (or simple (ie: cheap) circuit) that is 
>designed to produce the signals I'm looking for?
> 
>Wave form A
>      |------|      |------|      |------|      |------|
>------|      |------|      |------|      |------|      |------
> 
>Wave form B
>------|      |------|      |------|      |------|
>      |------|      |------|      |------|      |------
> 
>Note: The "High" times of the two waveforms must not overlap,
>and it would be even nicer if they have a "break before make"
>characteristic.
> 
> 

Generate your clock at 240 Hz and run it through an edge triggered
D-type flipflop.  There is no way to guarantee simultaneous transition
though and Break before make means you don't really want a 50% duty cycle
anyway.  If you really want break before make, you can either use a
one-shot on each output (bad practice) or you can control the time when
each output is high and both are low by counting them in two counter
chains from the master clock.

--
Larry                                   |   Thunder makes all the noise;
                                        |   lightning gets the job done.
larryd@milton.washington.edu
I have my opinion; the university has its own.

Newsgroups: sci.electronics
From: edg@ecs.comm.mot.com (Ed Gonzalez)
Subject: Leitch decoder
Organization: trunking_terms
Distribution: usa
Date: Wed, 9 Sep 1992 16:19:23 GMT
Keywords: Leitch decoder

Everybody knows that RE publishes many schematics for many
projects, some of which are handy.  Back in 90 they even 
did the universal decoder schematic (including errors ).
One thing I noticed is that nobody talks about the Leitch
decoder.  What does it do? How? etc., etc.,

Many of you might be saying "go to the library !! grab a book!!"
Well, I DID! and I did not find anything.  Maybe someone has
seen some popular magazine or book that describes how this
works, maybe even has schematics.  Any help is appreciated.  Thanks.

edg.
Newsgroups: sci.electronics
Subject: Re: Filtering TV Commercials
From: rmintz@ecst.csuchico.edu (Rich Mintz)
Date: Sat, 05 Sep 1992 03:06:55 GMT
Organization: California State University, Chico

==> Hire someone to push the mute button for you.
 
And hold a sheet in front of the video too, while he's at 
it 8-)
 
And just for the record, I wasn't asking for info on this 
because I had any interest in marketing such a device... 
if I did figure a way to do it it would stay my secret!
 
    Rich -> rmintz@cscihp.ecst.csuchico.edu
From: sknapp@iastate.edu (Steven M. Knapp)
Newsgroups: sci.electronics
Subject: Re: VERY small Sony Walkman design: 1MB buffering CD player
Date: 14 Sep 92 06:35:09 GMT
Distribution: usa
Organization: Iowa State University, Ames, IA

In article <1992Sep13.150818.17478@doug.cae.wisc.edu> kolstad@cae.wisc.edu (Joel Kolstad) writes:

>
>Sure was.  It's too bad that there are very few neat things on the
>market anymore... walkmen these days seem to be so... boring!  At
>least there are some neat portable CD players out there.... Sony's
>"buffer 1 megabyte of music so you won't hear skips" is pretty neat.

Which discman is this? D-? How much can one be had for...that sounds GREAT!
________________________________________________________________________ 
Steven M. Knapp		                    Computer Engineering Student
sknapp@iastate.edu	            President Cyclone Amateur Radio Club
Iowa State University; Ames, IA           Durham Center Operations Staff
Newsgroups: sci.electronics
From: pngai@adobe.com (Phil Ngai)
Subject: Re: GAL LOGIC
Organization: Adobe Systems Incorporated
Date: Mon, 14 Sep 1992 04:18:00 GMT

In article <92254.103444LEEK@QUCDN.QueensU.CA> <LEEK@QUCDN.QueensU.CA> writes:
>A trademark identifies a line of products so that it won't be confused
>with something similar.  I mean is there any difference between
>
>  PAL16V8     (one-time programmable, fuse based, AMD)
>  GAL16V8     (EEPROM based, erasable, Lattice)

Can I use a PAL16R4 in place of a PAL16R8 because they both go by the
trademark PAL and so I don't have to worry about confusing one product
with a similar product?

You are making unwarranted assumptions. PALs do not have to be one time
programmable. Two counter examples are the AMD PAL CE and the Lattice
GAL devices. Yes, a GAL is a PAL, although not all PALs are GALs.
Another counter example is the UV erasable PALs.

Nor does a GAL have to come from Lattice. GAL simply means generic
array logic, that is, a 16V8 can replace any of 16R4, 16R6, or 16R8.
THAT is what the GENERIC means.

It so happens that Lattice invented the concept (and they deserve
kudos for their cleverness) but the programming algorithm is no
more related to whether a device is a GAL than to whether a device
is an EPROM or FLASH or EEPROM etc.

If you ask for a GAL 16V8 and don't specify which vendor, then you have
no cause to complain if you don't get the vendor you wanted (but didn't
ask for).

-- 
My opinions are my own.

Newsgroups: sci.electronics,alt.guitar
From: insomnia@carson.u.washington.edu (Ryan Klemmer)
Subject: Re: Building effects units for guitars
Organization: University of Washington
Distribution: na
Date: Wed, 9 Sep 1992 02:15:13 GMT

While not any expert, I have a few observations.

Ask any guitar player what kind of amplifier they would use and most would
say tube.  Why?  Because they have a certain sound that semiconductor
devices just can't produce.

Moving on to effect devices.  Why analog?  Same reason.  Just off hand,
a recent Guitar Player interview with The Cure asked why analog pedals.
The answer was that they were just too mechanical, and not very good
when going live.  They just didn't have the same feel, tonality, etc.

Just Opinions.

Ryan

Newsgroups: sci.electronics,alt.guitar
From: till@acid-rain.lucid.com (Don Tillman)
Subject: Re: Building effects units for guitars
Reply-To: till@lucid.com
Organization: Lucid, Inc.
	<Bu1318.2B8@comp.vuw.ac.nz> <1882d2INNov1@matt.ksu.ksu.edu>
	<1992Sep4.164544.1779@pony.Ingres.COM>
	<TJS.92Sep4144545@godzilla.eecs.umich.edu>
	<TILL.92Sep8132433@acid-rain.lucid.com>
	<1992Sep9.021513.23393@u.washington.edu>
Distribution: na
Date: 9 Sep 92 10:46:13

   Date: Wed, 9 Sep 1992 02:15:13 GMT
   From: insomnia@carson.u.washington.edu (Ryan Klemmer)
   Organization: University of Washington

   Ask any guitar player what kind of amplifier they would use and most would
   say tube.  Why?  Because they have a certain sound that semiconductor
   devices just can't produce.

Not true; tube amplifiers sound like they do because of the specific
circuit topology used, the overdrive characteristics, and the low use of
feedback -- not because they use tubes.  (I described this more completely
in an earlier post.)

On the market however, you'll find that all the available tube amps are
subtle variations variations on one design and all transistor amps are
subtle variations on maybe three designs, so yeah, the generalization holds
in that respect.  But note the distinction between what's available on the
market and what's technically possible!  Besides being inaccurate, you're
making an extremely rude insult to the field of electrical engineering when
you say that an amplifier built with a certain active device has to (or
can't) sound a certain way.

   Moving on to effect devices.  Why analog?  Same reason.  

In case it wasn't clear, my comments about the musical quality of analog
vs. digital effects were specifically about what's available on the market,
not what's technically possible.

  -- Don
From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
Newsgroups: sci.electronics
Subject: Re: Lo-voltage florescent bulbs?
Date: 14 Sep 92 05:24:40 GMT
Article-I.D.: athena.1992Sep14.052440.4138
Organization: University of Georgia, Athens

In article <BuJIMH.8Kn@news.cso.uiuc.edu> pdg@math.uiuc.edu (Paul Grayson) writes:

>  I've seen lots of flashlights with what looked like florescent bulbs in them.  The flashlights ran at <10Volts.  Does anyone know where I could get the bulbs??

They are ordinary bulbs with a special circuit that chops the DC into AC
and steps it up to a high voltage.  If I'm not mistaken, they never use the
filaments in the bulbs -- instead, they rely on a much higher voltage to
generate the arc discharge.



-- 
+ Michael Covington - Artificial Intelligence Programs - U of Georgia - USA 
+ Unless otherwise noted, these are private opinions, not official statements.
From: gkwan@balboa.eng.uci.edu (Greg Kwan)
Subject: Re: Is this legislation for real?
Newsgroups: sci.electronics
Organization: University of California, Irvine
Date: 8 Sep 92 23:43:16 GMT
Distribution: usa

In article <1992Sep5.044504.20441@athena.cs.uga.edu> mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
>(1) A bill to abolish private consulting, "Senate 1706", mentioned by
>a correspondent to Robert Pease in a recent issue of _Electronic Design_.
>(There _is_ a Senate 1706, but it has to do with import duties on some
>industrial chemicals.)

[For those who wish to ref. the article, it is the Aug. 6, 1992 issue of
_Electronic Design_, page 73.]

I just spent about 2 hours with the government publications librarians
(at UCI) and we couldn't come up with anything at all. S1706 is not
the correct bill; neither is H1706 nor anything close (i.e. 706, 1607,
etc...). They also tried searching a new database, but it didn't turn
up much that appeared related. There was mention of an _LA Times_ arti-
cle concerning defense related contracting (26.JAN.89, Sec IV, p.2,col.
3), but I haven't looked it up as yet (microfilm). After conceding de-
feat, they suggested calling the AACE & tried to get me its phone num-
ber. There was no American Association of Concerned Engineers listed in
the association index. There's an American Consulting Engineering Council.

Is there anything correct in that person's letter? Would a company really
shift a position from full-time to contract just because a person is over
40? That's very scary. The more I find out about EE, the less impressed
I am over my career choice...

greg

gkwan@balboa.eng.uci.edu
Newsgroups: sci.electronics,alt.guitar
From: till@acid-rain.lucid.com (Don Tillman)
Subject: Re: Building effects units for guitars
Reply-To: till@lucid.com
Organization: Lucid, Inc.
	<Bu1318.2B8@comp.vuw.ac.nz> <1882d2INNov1@matt.ksu.ksu.edu>
	<1992Sep4.164544.1779@pony.Ingres.COM>
	<TJS.92Sep4144545@godzilla.eecs.umich.edu>
Distribution: na
Date: 8 Sep 92 13:24:33

   Date: 4 Sep 92 19:45:45 GMT
   From: tjs@eecs.umich.edu (tim stanley)
   Organization: University of Michigan

   Regarding writing a new book...  Some of those projects are from a
   book that he wrote, with which I learned basic electronics, in about
   1975-1976, so that predates the latest (10 year old) edition.  So, yes
   they are old, and yes, 10 years is a long time in consumer
   electronics.  

I disagree.  Maybe for a cabbage patch doll, but ten years is nuthin' for a
truly well-engineered product.  The Fender Telecaster is 44 years old and
still going strong, the Klipschorn loudspeaker is forty-something, the
Volkswagen bug is maybe 50 years, the Hammond B3 organ, Levis jeans, Radio
Flyer wagons, and so on; they have all lasted a good long time, even in
trendy markets.

Also building and customizing these projects are an incredibly good way to
learn electronics, creating an intuitive link between circuit functions and
signal processing qualities, cause and effect, and all that, the stuff
that's largely unavailable otherwise.  (I get the feeling from some of the
traffic on Usenet lately that serious analog electronics isn't being taught
in schools anymore.  I sure hope this isn't true.)
		 
		 But there is a more telling point to be made.  Craig now
   does mostly synth/computer/MIDI stuff I believe.  "Guitar effects"
   have moved to these guitar effects processors now.  Same effects as
   always - just done digitally now.  So I am not sure if that makes the
   analog effects obsolete exactly; it may have made them cheaper.  

While many effects are implemented digitally these days, they aren't
implemented all that well.  I don't know why, it could be the ADCs, the
DACs, goofy algorithms, roundoff error... who can tell, it's all completely
inaccessable.  But I don't know of a digital phase shifter patch that
sounds anywhere as good as some of the old analog ones, or a digital reverb
with the "splunk" of real springs.

So the analog stuff is certainly not out of date.  I'd even venture to say
that there might be a huge market for it in a couple years.

Sooner, if those annoying little Zoom boxes get any more popular.  :-)

  -- Don
Newsgroups: sci.electronics
From: johnh@macadam.NoSubdomain.NoDomain (John Haddy)
Subject: Re: Question about origin of name of BNC connector
Keywords: BCN connector, name origin
Organization: Macquarie University
Date: Wed, 9 Sep 1992 07:04:36 GMT

In article <BuA98x.A7s@news.cso.uiuc.edu>, 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.
|> 
The last time this was discussed at this forum, the most reliable response said
that BNC stands for BAYONET - NEILL - CONCELMAN (the last two being the
designers (?).

By the way, if anybody Stateside or in Europe reads this, would you mind dropping
me a note via email? I've posted a request to this group (a total of three times)
recently, and haven't had any response (possibly due to it never having got past
Sydney).

p.s. don't use the header address, use the one below

----------------------------------------------------------------------------

      |  _  |_   _   |_|  _   _|  _|              Electronics Department
    |_| (_) | | | |  | | (_| (_| (_| \/           School of MPCE
    ---------------------------------/-           Macquarie University
                                                  Sydney, AUSTRALIA 2109

    Email: johnh@mpce.mq.edu.au, Ph: +61 2 805 8959, Fax: +61 2 805 8983

----------------------------------------------------------------------------
From: laird@stable.ecn.purdue.edu (Kyler Laird)
Newsgroups: sci.electronics
Subject: 19" rack rail sellers
Date: 14 Sep 92 02:17:05 GMT
Organization: Purdue University Engineering Computer Network

I'm looking for some rack rails to install in a new house for
a computer system.  I have some old photo copies from Middle
Atlantic (?), but I don't have their phone number.

I need rails, blank plates, and drawers.

Also, I'm looking for rack mount monitors, passive backplanes
and keyboards.

Thanks!

--kyler
Newsgroups: sci.electronics,rec.radio.amateur.policy,alt.folklore.urban
From: mat@mole-end.matawan.nj.us
Subject: Re: Is this legislation for real?
Summary: Section 1706
Organization: :
Distribution: usa
Date: Fri, 11 Sep 1992 00:31:21 GMT

In article <1992Sep6.070933.16476@porthos.cc.bellcore.com>, whs70@dancer.uucp (22501-sohl) writes:
> In article <1992Sep5.044504.20441@athena.cs.uga.edu> mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
> >I have been told that the following 2 things are before the Senate, but
> >cannot locate them in Congressional Record and similar sources.  Can
> >anyone elucidate?
> >
> >(1) A bill to abolish private consulting, "Senate 1706", mentioned by
> >a correspondent to Robert Pease in a recent issue of _Electronic Design_.
> >(There _is_ a Senate 1706, but it has to do with import duties on some
> >industrial chemicals.)

(Flame on!)
Section 1706 of the 1987 (86?) Tax Reform Act was pushed through by
`Bedfellow' Moynihan, who (IMO) deserves to rot for making it hard
for people to earn a living without submitting to the umbrella of an
employer.  He pushed this bill through committee after midnight when
there was almost nobody in the chamber, and (by some reports) several
of those who were there were asleep.

Prior to 1706, the rules for whether you could call yourself an independent
(rather than an employee) depended upon `industry practice'; if the industry
in which you worked had many people who worked as independents, even if they
had only one client, you could call yourself an independent.

1706 repealed this provision of the tax code (called the `Safe Harbor'
provision) for technical workers, forcing programmers, engineers, technicians
and draughters who work for one client for extended periods to become
employees, with all the attendent tax disadvantages *AND CAREER
DISADVANTAGES* (IRA/401K instead of Keogh, for example, and non-portable
pension plans).  The purported purpose of the bill was protect the
revenue by preventing abuse of the Safe Harbor provision; the effect was
to make it illegal for an individual to maintain a long-term relationship
with a customer without sacrificing his pension savings and his independence.

It is commonly observed that this denies technical employees a professional
status extended to hairdressers.  It is also commonly observed that Bedfellow
Moynihan received a large donation that year from an association of large
`consulting industry' (body shop) companies.  (I have not enough bad words
to spend on this sleazeball of Congress-scum.)

Many talented people responded by withdrawing their services from the firm
for which they had worked and consulting in smaller jobs, or writing software
for sale, competing with others who were in that market by preference.
(Flame off.)
-- 
 (This man's opinions are his own.)
 From mole-end				Mark Terribile

 mat@mole-end.matawan.nj.us, Somewhere in Matawan, NJ