audio recording on IC -help wanted

[xray]

On Wed, 7 Jul 2004 02:46:06 -0400, "Bill Garber" <willy46pa@comcast DOT
net> wrote:

And as I must apologize to you, but Halloween has
2 L's, not one. )

Indeed. Sorry.

 

[John Miller]

Hmm. There's an apostrophe, too. Hallowe'en. (Halloweven - All Hallows'
Eve)

So many pagan festivals, too little time....

"xray" <notreally@hotmail.invalid> wrote in message
news:rn7ne09q13sunmdm4lithuom22p88cbh9h@4ax.com...

On Wed, 7 Jul 2004 02:46:06 -0400, "Bill Garber" <willy46pa@comcast DOT
net> wrote:

And as I must apologize to you, but Halloween has
2 L's, not one. )

Indeed. Sorry.

 

[Beginner Student]

On Wed, 14 Jul 2004 12:47:51 GMT, Groan
<shelurched@www.comicsorgy.com> wrote:

Not just that, but do you daydream about tonguing Marge Simpson's......BAHLEEETED..

Yeeeeeeesh! What is wrong with people...

I will admit Marzipan gets me pretty hot though...

http://www.homestarrunner.com/sbemail.html

 

[Ben Simon]

I have actually found a chip which looks like it might work. The
problem with it is the package is different:
Original:
http://www.parl.clemson.edu/~wjones/371/chips/6264a.pdf
Proposed replacement:
http://www.jameco.com/Jameco/Products/ProdDS/85121.pdf

The one I have blown up looks flatter and the leads are bent down and
out so that it sits on top of the board. (What's that called.....soj?)
Thanks!
-ben

Beatachon@yahoo.com (Ben Simon) wrote in message news:<b88acea2.0407160649.5812ae51@posting.google.com>...

Not sure if this is the correct forum. Maybe somebody can help me
figure out a mistake I made in a project that is really bumming me
out. I'm a newbie and trying to get back into electronics.

I recently blew up an SRAM chip on an lcd by plugging in the wrong
voltage to the contrast line. (I think) The spec sheet is very
misleading and I interpreted the contrast voltage to be 15 volts when
really it was Vdd-Vo = 15. And I believe Vdd = +5. So really it was
asking for -10 volts.
(Vdd - Vsb where Vsb is GND).

It was the Hyundai HG25504. ( you can see it at allelectronics.com
LCD-101)
Anyhow, I was wondering if 1) somebody could explain this confusing
terminology and 2) tell me if the SRAM (8k x 8bit Hyundai 6246) is
replaceable with a larger SRAM chip. I have been unable to find the
exact same pinout/size.

Thanks.
-ben

 

[Jack]

I have several (obsolete) copies of a diode/rectifiers and need the specs on
it: SJ304(e-f). I have located it via a few online sellers, however, they
do not have any info on that device ..except that it was made by Marconi.

Appreciate the help,
Jack

 

[Miguel Gimenez]

"www.ChantCd.com" <hormel77@hotmail.com> escribió en el mensaje
news:GqFLc.6603$8_6.1780@attbi_s04...

It says

TESLA A18
MH74755

But there doesn't seem to be a manufacturer by that name on most of the IC
databases around. Are they obsolete?

Matthew

Tesla made the worst 7805 regulators I have ever seen, both physically and
electrically. About 20% of the regulators gave less than 4.75 Volts. I think
they were russian, and possibly they are not in business today.

Regards
Miguel Giménez

 

In sci.electronics.design Miguel Gimenez <me@privacy.net> wrote:

"www.ChantCd.com" <hormel77@hotmail.com> escribió en el mensaje
news:GqFLc.6603$8_6.1780@attbi_s04...
It says

TESLA A18
MH74755

But there doesn't seem to be a manufacturer by that name on most of the IC
databases around. Are they obsolete?

Matthew


Tesla made the worst 7805 regulators I have ever seen, both physically and
electrically. About 20% of the regulators gave less than 4.75 Volts.

Tesla TTL's were even worse - sometimes only 20% of parst were usable

I think
they were russian, and possibly they are not in business today.

Tesla parts were Czech

MH74755 - I can't find in it Tesla catalog on net (http://www.io.freehosting.cz/).

If it isn't a special product look again on it.
It can be one of MH74155 = SN74155 or MH7475S = SN74S75

Mirek

 

[JeffM]

..

 

[John Woodgate]

I read in sci.electronics.design that JeffM <jeffm_@email.com> wrote (in
<f8b945bc.0407240955.20ed1238@posting.google.com&gt about 'Who made this
IC?', on Sat, 24 Jul 2004:

.

It's a bit difficult to tell; it's too small to read the type number.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk

 

[John Miller]

I'm real, too!

So is the guy at work with the same name and middle initial!

But you were here first!!

"John Miller" <me@privacy.net> wrote in message
news:ce6pr8$rui$1@n4vu.com...

The *other* John Miller wrote:

I've heard this $2000 bit before....

You probably heard it here, from someone who was looking at prices in the
"components on reels" section instead of the individual parts.

--
The real John Miller
Email address: domain, n4vu.com; username, jsm

"Send lawyers, guns and money..."
-Lyrics from a Warren Zevon song

 

[Alan]

On Thu, 29 Jul 2004 12:28:39 +0100, Paul Burridge
<pb@notthisbit.osiris1.co.uk> wrote:

On Wed, 28 Jul 2004 21:22:44 -0500, "Poker Joker" <Poker@wi.rr.com
wrote:

Here is where your problem lies. You need to give up hope and completely
loose heart. It saves you alot of energy and us alot of money. I'm sure
there is plenty of work collecting garbage or cleaning sewers, so you
should be able to get by just fine.

Plus McDonalds always need more burger flippers. He could maybe clean
the sewers in the daytime and serve at Mac's in the evenings to make
some extra cash. He should remember to thoroughly wash his hands, of
course, every night after clocking-off.

Yeah! Wouldn't want to contaminate the sewers with the stuff from
Mac's
++++++++++++++++++++++++++++++++++++++++++
Jenal Communications
Manufacturers and Suppliers of HF Selcall
P O Box 1108, Morley, WA, 6943
Tel: +61 8 9370 5533 Fax +61 8 9467 6146
Web Site: http://www.jenal.com
e-mail: http://www.jenal.com/?p=1
++++++++++++++++++++++++++++++++++++++++++

 

[John Robertson]

Canada used to have a law that manufacturers were required to produce
schematics on the request of the consumer or repair shop...I wonder if
it is still in force - haven't thought of it for years....

John :-#)#

On Tue, 10 Aug 2004 11:18:21 -0400, "Michael A. Covington"
<look@ai.uga.edu.for.address> wrote:

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:mcugh0t0suen4qetn2ap442lpc1lq0m6fr@4ax.com...

Yeah, that's what happens over here as well. It's about time the
useless Greenies got off their backsides and pushed for legislation in
this area. IMO, there should be no excuse for any manufacturer not to
make service manuals available in paperless format via the Internet.
And that means making them available to everybody, not just their
business partners. I detest the condescending, patronising attitude of
manufacturers who pretend that by withholding technical information
they are protecting unqualified consumers from themselves. That should
not be their choice, nor their responsibility, it should be mine.

VERY GOOD POINT about it being a "green" (environmental) issue -- the best
way to keep stuff out of landfills is to fix it! The manufacturers don't
necessarily have service manuals, but they have *some* documentation, which
could be made available. Something about clearing up the safety liability
is another thing such legislation could accomplish.

(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

 

[Watson A.Name - \"Watt Su]

"John Robertson" <spam@flippers.com> wrote in message
news:2arih05mrefi80cfb4nh2o0eqnrkvtnh1k@4ax.com...

Canada used to have a law that manufacturers were required to produce
schematics on the request of the consumer or repair shop...I wonder if
it is still in force - haven't thought of it for years....

John :-#)#

California has consumer lemon laws that require the makers to supply
repair parts for 3 or 7 years, depending on the cost of the appliance.
Trouble is, the makers keep one part in some warehouse somewhere, to
meet the legal requirements, and then price it so high that it's more
expensive than buying a replacement appliance!

Like, I'm gonna pay $200 for a replacement flyback transformer, when the
monitor was only a hundred and fifty new? Come ON! >:-(

On Tue, 10 Aug 2004 11:18:21 -0400, "Michael A. Covington"
look@ai.uga.edu.for.address> wrote:

"Franc Zabkar" <fzabkar@optussnet.com.au> wrote in message
news:mcugh0t0suen4qetn2ap442lpc1lq0m6fr@4ax.com...

Yeah, that's what happens over here as well. It's about time the
useless Greenies got off their backsides and pushed for legislation
in
this area. IMO, there should be no excuse for any manufacturer not
to
make service manuals available in paperless format via the
Internet.
And that means making them available to everybody, not just their
business partners. I detest the condescending, patronising attitude
of
manufacturers who pretend that by withholding technical information
they are protecting unqualified consumers from themselves. That
should
not be their choice, nor their responsibility, it should be mine.

VERY GOOD POINT about it being a "green" (environmental) issue -- the
best
way to keep stuff out of landfills is to fix it! The manufacturers
don't
necessarily have service manuals, but they have *some* documentation,
which
could be made available. Something about clearing up the safety
liability
is another thing such legislation could accomplish.


(Please post followups or tech enquires to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

 

[Michael A. Covington]

"John Miller" <me@privacy.net> wrote in message
news:cfu2r4$7rh$1@n4vu.com...

Michael A. Covington wrote:
So it's a sealed-bid auction disguised as an open-bid auction. eBay
should make up their mind.

But how could sniping be eliminated?

As I said a while back, do what www.astromart.com does and do what real
auctioneers do: Extend the bidding as long as the bids are still going up by
more than a specified small percentage. Instead of stopping at a
prearranged time, you stop as soon after that time as the bidding actually
stops.

 

[John Miller]

Michael A. Covington wrote:

As I said a while back, do what www.astromart.com does and do what real
auctioneers do: Extend the bidding as long as the bids are still going up
by
more than a specified small percentage. Instead of stopping at a
prearranged time, you stop as soon after that time as the bidding actually
stops.

Yeah! I get it. Not completely unlike knowing when to stop popping the
corn.

--
John Miller
Email address: domain, n4vu.com; username, jsm

Predestination was doomed from the start.

 

[Watson A.Name - \"Watt Su]

"John Miller" <me@privacy.net> wrote in message
news:cfu2r4$7rh$1@n4vu.com...

Michael A. Covington wrote:
So it's a sealed-bid auction disguised as an open-bid auction. eBay
should make up their mind.

But how could sniping be eliminated?

Why should it be? You place your maximum (sensible, informed) bid, come
back after the auction has ended, and find out if you won. What diff
does it make if bidders wait to the last millisecond to bid?

--
John Miller

 

[Watson A.Name - \"Watt Su]

"Michael A. Covington" <look@ai.uga.edu.for.address> wrote in message
news:41229583@mustang.speedfactory.net...

"John Miller" <me@privacy.net> wrote in message
news:cfu2r4$7rh$1@n4vu.com...
Michael A. Covington wrote:
So it's a sealed-bid auction disguised as an open-bid auction.
eBay
should make up their mind.

But how could sniping be eliminated?

As I said a while back, do what www.astromart.com does and do what
real
auctioneers do: Extend the bidding as long as the bids are still going
up by
more than a specified small percentage. Instead of stopping at a
prearranged time, you stop as soon after that time as the bidding
actually
stops.

But what is this supposed to accomplish? Take away the advantage of
sniping? Looks to me that they don't really have that much of an
advantage, because they still have to do what the other bidders to, bid
a maximum amount they're willing to pay. They, too, must wait until the
auction is over to find out who won.

 

[Peter A Forbes]

On Tue, 17 Aug 2004 14:46:09 -0700, John Miles
<jmiles@pop.removethistomailme.net> wrote:

In article <4121fadc$1@mustang.speedfactory.net>,
look@ai.uga.edu.for.address says...
As it is, the sniping contest keeps the sale from going to the person who is
willing to pay the most. It's fairly common to miss "winning" an item
because you didn't snipe fast enough.

That statement shows a pretty fundamental misunderstanding of how eBay
works.

The person who is willing to pay the most *always* wins.

-- jm

That is fundamentally correct: any previous bid that is higher than your
last-second snipe will win. The main benefit of the snipe system is to prevent
bidders racking the price up and also preventing others getting another bid in
after you. It does not automatically guarantee a win.

As has been said before, there's always another one of the same coming along, so
chasing a price on ebay is a fool's game.

Peter

--
Peter & Rita Forbes
diesel@easynet.co.uk
Engine pages for preservation info:
http://www.oldengine.org/members/diesel

 

[Commander Dave]

The advantage of sniping is that you disguise your interest in an item and
avoiding "bidding fever" by the other guys.

If you bid your max, and someone comes along and bids their max (which is
below yours), they instantly know they lost the auction unless they bid
more. So frequently they decide to bid more after all... which up's the
price (a bidding war). If you snipe, they other guy bids his max and he is
the high bidder until you snipe it and win (or lose as the case may be). The
other guy has no chance to rethink his max bid.

Of course, you don't win everything by sniping. You still have to determine
your max bid ahead of time, but sniping can make a difference. I've gotten
hate mail before when I've won an auction by sniping.

Other problems with sniping is that if the bids are low on an item, the
seller will sometimes pull the auction thinking he won't get what he wants
for the item. Live by the sword and die by the sword... but of course,
another similar item will eventually come along.

My 2 cents...
-Commander Dave

"Watson A.Name - "Watt Sun, the Dark Remover"" <NOSPAM@dslextreme.com>
wrote:

Why should it be? You place your maximum (sensible, informed) bid, come
back after the auction has ended, and find out if you won. What diff
does it make if bidders wait to the last millisecond to bid?


--
John Miller

 

[John Miller]

Watson A.Name - "Watt Sun, the Dark Remover" wrote:

Why should it be? You place your maximum (sensible, informed) bid, come
back after the auction has ended, and find out if you won. What diff
does it make if bidders wait to the last millisecond to bid?

Because if it's an in-demand item and you place your max bid days or hours
before the end, and it's a sensible bid (as opposed to unreasonably high),
the probability of losing is pretty high. Why? Because visibilty of your
bid provides other people, who may not have your good judgment regarding a
reasonable max price, with the opportunity to bid the item up to an
unreasonable amount.

--
John Miller
Email address: domain, n4vu.com; username, jsm

It is indeed desirable to be well descended, but the glory belongs to
our ancestors.
-Plutarch