Driver to drive?

[Rene Tschaggelar]

Pop wrote:

If you have the background experience, you can grab the ambient
noise, invert it, and feed it back into an amp 180 out along with
the original, and thus zero out the noise. It's a method often
used to zero out static, switch pops, hums, etc.. I made a lot
of use of it in the electronic organ arena in its heyday. Works
very well with headphones also.

Pop

Except that it doesn't work satisfactorily.
While this technology is standard for small aeroplane headsets.
I found it just generated a lot of noise in the ultrasonic frequencies
leading to headacke and tiredness. I tend to therefore switch this
auto compensation off.

Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net

 

[Rich Grise]

On Monday 04 October 2004 12:34 pm, Dave VanHorn did deign to grace us with
the following:

Does the circuit detect whether the paper rolls over or under? Just
kidding....

Actually, yes.
If you put the paper roll on the wrong way (over) then the print density
test won't pass since you'd be trying to print on the wrong side of the
paper.

Anyone with cats will tell you, that over is definitely the wrong way.

Anyone who is smart enough to know the proper way to install the paper

is smart enough to not allow those filthy demon-spawn into their home.

Cheers,
Rich

 

[Guy Macon]

Rich Grise <null@example.net> says...

Incidentally, this was the same cage where one of the gorillas pooped a sort
of yellow pudding-like cowpie (gorilla-pie?), and another one went up and
tasted it.

Sort of like replying to Aylward's posts...

 

[Jonathan Kirwan]

On Mon, 04 Oct 2004 20:57:19 GMT, Joerg <notthisjoergsch@removethispacbell.net>
wrote:

I believe that was in honor of Jack Kilby (J.K.) who invented the IC.

Shucks, and here I was hoping it might be... my name.

Jon

 

[Jonathan Kirwan]

On Sun, 3 Oct 2004 20:21:27 -0500, "Leon Sorokin" <lsorokin@tds.net> wrote:

making an single LED blinky, but the Luxeon LED draws 350ma at 3.42V and i
need to flash it with about 450ma.

Regarding the Luxeon LED, are you are talking about the LT1512 LED lamp?

(There's a caving site at http://www.speleogroup.org/lt1512a.html with some
example circuits for continuous operation, rather than blinking.)

i'm gonna run the circuit off a 6V CR2 battery.

The CR2 is 3V, so I'm guessing you mean the CR-P2 style. These are Lithium and
spec'd for 20mA continuous, 1400mAH total, and 3-second long pulses of 900mA
once every 30 seconds. With slightly over 5V each pulse, this is about 25000
Joules total usable energy. (Your pulses are about half of the pulse spec, so
I'm guessing you'll get a little better life than that.)

i think this is pretty close to what i need as far as design, but i
need help with component selection.

How often will it blink? How long should the pulse duration be? How long do
you expect to operate on one battery?

Jon

 

[Rolavine]

From: Robert Monsen

So question is, how can the US rig the election, and still give the
appearance that it was fair, and yet still have their boy Chalabi or
Allawi come out on top? I

Didn't they arrest Chalabi? The Bush Admin isn't even any good at picking
puppets.

Rocky

 

[Rolavine]

From: Fred Bloggs

Afghanistan is an even bigger farce. There the warlords have told the
villagers how they should vote with serious consequences for people who
do otherwise such as burning their homes and running them out of the
village, outright execution of family members, and exclusion from
religious burial. It is widely recognized that the US plan for
'democracy' is a pathetic world-class farce- and just another overpriced
atrocity and failure you can chalk up to the Bush administration.

Not only that but the idiot Bush keeps bragging about 10 million Afgans

registered to vote as if that is a sign of democracy on the march . There are
not even ten million registered voters in Afganistan. Bush said this in his
acceptance speech and then twice during his debate (yeah I know he said most
things at least five times). You would think one of them smart Republicans
would have told him that this is BS. Oh wait, maybe BS is a selection criteria
for a Bush Speech, now that makes sense.

Rocky

 

[Rolavine]

From: Spehro Pefhany

Long article in the NYT here:
http://www.nytimes.com/2004/10/03/international/middleeast/03tube.html

They were just 7075-T6 aluminum, which is pretty common stuff in the
aircraft industry (also used for making bicycle frames etc.). The
technical information is unusually detailed for a newspaper article.

It's pretty clear now that the Bush Admin made up the Iraqi threat and it's

related documentation, in order to have it's pet war. It must take a 'true
believer' to think that this admin could have made dozens of consistent
mistakes that all led to imminent theat and WMD? The other argument that can be
made is that if they actually made that many consistent errors then they are
amazingly incompetent. Either way the correct action is to flush them.

Rocky

 

[Phil Hobbs]

Rich Grise wrote:

You censored 'ass'? On USENET? ;-)

I keep it covered. ESPECIALLY on Usenet.

Cheers,

Phil Hobbs

 

[Joerg]

Hi Iceman,

anyone knows any good digital potentiometers i can use for the pulse
generator circuit for servo motor control?


Why use digital pots? Usually that is done via a pulse width modulator.

Regards, Joerg

http://www.analogconsultants.com

 

[Rich Grise]

On Monday 04 October 2004 01:38 pm, Prasad did deign to grace us with the
following:

Hi,
In case of all other flip flops ,the names indicate something about their
function. R-S:Reset-Set
T:toggle
D-delay or data

then what does j-k in j-k flip flop indicate.
reply me if u know anything about this.

It sounds so mundane, but I actually think they picked them because they
were the next letters in sequence to designate arbitrary stuff, much the
same way that they use Q for transistors, and U for ICs. E is volts, F is
Farads, G is conductance, H is hysteresis or Henrys or something to do
with the black magic of magnetics, I is duh, so J and K were next.

Hope This Helps!
Rich

 

[Rich Grise]

On Monday 04 October 2004 11:42 am, ChrisGibboGibson did deign to grace us
with the following:

John Woodgate wrote:


I read in sci.electronics.design that ChrisGibboGibson
chrisgibbogibson@aol.com> wrote (in <20041004133041.24216.00001478@mb-
m10.aol.com&gt about 'Marketing blurb - bullsh*t baffles etc', on Mon, 4
Oct 2004:
Keith Wootten wrote:

Four-sprung pork technique.


It's not often this NG makes me laugh.

You have to laugh at 90% of it at present, otherwise you'd scream.


At present I have several threads on ignore. Clearly there is something
very wrong with me to be so completely uninterested in subjects that
others find so fascinating.

"Wrong" relative to what?

 

[Winfield Hill]

Spehro Pefhany wrote...

I recently listened to a top diplomat (under the Chatham House Rule,
or I'd name names) tell us that things are going just swimingly in
Afghanistan...

"The new amendment means that participants are free to use the information
received and can now also state that it was received at a Chatham House
meeting. This provides clarity for participants and will allow summaries
of meetings to be prepared."

OK, we don't need nor care about the names, but we could use the facts.


--
Thanks,
- Win

(email: use hill_at_rowland-dotties-org for now)

 

[John Larkin]

On Tue, 05 Oct 2004 01:50:18 GMT, Fred Bloggs <nospam@nospam.com>
wrote:

This by Juan Cole:


If America were Iraq, What would it be Like?

President Bush said Tuesday that the Iraqis are refuting the pessimists
and implied that things are improving in that country.

What would America look like if it were in Iraq's current situation? The
population of the US is over 11 times that of Iraq, so a lot of
statistics would have to be multiplied by that number.

Thus, violence killed 300 Iraqis last week, the equivalent
proportionately of 3,300 Americans. What if 3,300 Americans had died in
car bombings, grenade and rocket attacks, machine gun spray, and aerial
bombardment in the last week? That is a number greater than the deaths
on September 11, and if America were Iraq, it would be an ongoing,
weekly or monthly toll.

And what if those deaths occurred all over the country, including in the
capital of Washington, DC, but mainly above the Mason Dixon line, in
Boston, Minneapolis, Salt Lake City, and San Francisco?

You are describing cigarettes. They kill over 8,000 Americans a week,
in a most gruesome and painful manner.

John

 

[Jonathan Kirwan]

On 4 Oct 2004 21:42:04 -0700, kenkeeley@hotmail.com (Kenneth Keeley) wrote:

I have looked around the web but haven't found any well shown designs
all of the ones I have found have talked about using a PIC or micro
controller to interface with the keyboard.

That should help, I'd imagine. But it doesn't give you the theory, I suppose.

Do you know where I could
find the IBM docs that you referred to.

Yeah. On my shelf, in the sometimes coveted, 4-volume set called the "IBM
Technical Reference." I'd just figured that someone out there must have
documented all the important details, already.

Jon

 

[xray]

On Mon, 4 Oct 2004 20:05:32 +0100, John Woodgate
<jmw@jmwa.demon.contraspam.yuk> wrote:

'You never know whether it's a cock-up or a carve-up.'

In the context, I think the 2nd option is rather insensitive.
In my knowledge you never do this kind of thing, John.

 

[Dan Major]

I think they want a buzz phrase. I'm sure the same idea has been
called some great names in the past.

What you've described is refered to as an evolutionary algorithm or a
genetic algorithm, as any Industrial Engineering student would know.


--
Sooner dot boomer at gbronline dot com

 

[John Woodgate]

I read in sci.electronics.design that Robert Morein
<nowhere@nowhere.com> wrote (in <qe-dnRYnl8Blvv_cRVn-uA@comcast.com&gt
about 'Exploding lithiums??', on Tue, 5 Oct 2004:

I like to watch movies with my laptop in my lap.

You need to consider the actual temperature of the bottom of the laptop
case, which is far more likely to cause you discomfort than the much
less probable battery explosion.
--
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

 

[martin griffith]

On Tue, 5 Oct 2004 00:32:56 -0400, in sci.electronics.design you
wrote:

I like to watch movies with my laptop in my lap.
From what I've read about lithiums, this could be dangerous.
However, the only lithium accidents I've heard about involve cellphone
lithium polymers in plastic bags, presumably counterfeited in China.

Most laptops, on the other hand, use high grade Sony 16550 or 16850
cylindrical cells, which are hermetically sealed with conventional organic
liquid electrolyte. In terms of robustness and longevity, this particular
design is considered to be the Cadillac of lithiums.

Is anyone familiar with, or has anyone heard of, incidents when this type of
cell ruptured with explosive force, or enough heat to burn through the pack
casing?

One manufacturing criteria the cell is supposed to withstand is sawing
through, or crushing the case, without provoking an explosion.

try this

http://www.eet.com/article/printableArticle.jhtml?articleID=47900158&url_prefix=issue/fp&sub_taxonomyID=


martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.

 

[Paul Burridge]

On Mon, 04 Oct 2004 20:11:28 -0700, John Larkin
<jjlarkin@highlandSNIPtechTHISnologyPLEASE.com> wrote:

You are describing cigarettes. They kill over 8,000 Americans a week,
in a most gruesome and painful manner.

Does Marlboro still run those 'cowboy' ads in the US? I haven't seen
any here in l'l Britland for some years.
--

"What is now proved was once only imagin'd." - William Blake, 1793.