Driver to drive?

Jim Thompson · Jan 7, 2009

On 4 Jan 2009 23:19:34 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2009-01-02, osr@uakron.edu <osr@uakron.edu> wrote:

Possible Sorting structure.

don't sort, hash instead.

Jim Thompson · Jan 7, 2009

On Wed, 10 Dec 2008 11:55:15 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:

[snip]

With "kill" based on CID I just thought of another feature:

At the 12th ring my phone rolls to voice mail. Set system for
allowing 11 rings for 800 numbers then "answer" (off hook for a few
seconds), prevents 800 crap in the voice mail ;-)

...Jim Thompson

Jim Thompson · Jan 7, 2009

On Thu, 01 Jan 2009 17:55:25 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:

On Thu, 1 Jan 2009 16:25:37 -0800 (PST), osr@uakron.edu wrote:

Possible Sorting structure. 1 Gbyte SD
I'm trying to think of a way to divide up a 1 gig card so the
microcontroller can run a fast bubble sort. I am not a mathmatician.
I hate math. So I'm looking for a simple elegant way by dividing up
the virtual disk into "sectors with subsectors" to minimize search
times. It does no good for the micro to need more then 5 seconds to
search for a incoming number..

North American Numbering Plan.
Area codes:

(2-9)(0-8)(0-9) = 7 * 9 * 10 = 6300 simple directories on the
disk?

You have 8 million possible numbers per area code.

The Wiki (cringe) is here:
http://en.wikipedia.org/wiki/North_American_Numbering_Plan

It gets worse if the CID gives you country codes and overlays.

Do you just get the 10 digit dialing sequence or is it worse? Do
locals only show up as XXX-NNNN without the area code? I don't know, I
don't have CID, and where I worked before had a PBX with a complex
display system.

Something to think about!

Steve Roberts

And some special cases: area codes... 800, 888, 877 & 866 and planned
expansion to 855, 844, 833 & 822, should be blanket-blocked.

I'd also blanket-block any "Unavailable" or "Out of Area" calls as
well.

Those, alone, would trim down a lot of the pain ;-)

...Jim Thompson

krw · Jan 7, 2009

In article <ccl9m45g9h6cd25oumgud30asofaasl2im@4ax.com>, To-Email-
Use-The-Envelope-Icon@My-Web-Site.com says...>

On 4 Jan 2009 23:19:34 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2009-01-02, osr@uakron.edu <osr@uakron.edu> wrote:

Possible Sorting structure.

don't sort, hash instead.

Why do we need to sort at all?

Can't one of you digital gurus devise a memory addressing scheme
derived from the caller ID?

Sure, we can build anything you're prepared to pay for, but CAMs
tend to be expensive and suck power.

If the bit is "1" at that address, kill the number.

Sure, for this application simply search the black directory. If
the number is there kill it. If it's in the white directory pass
it immediately. ...but that isn't nearly as fun for the programmer
weenies as arguing about sort algorithms and hash tables. ;-)

krw · Jan 7, 2009

In article <7mm9m4hlimpmhjptb7ebfff7j88bmimteh@4ax.com>, To-Email-
Use-The-Envelope-Icon@My-Web-Site.com says...>

On Wed, 10 Dec 2008 11:55:15 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:

[snip]

With "kill" based on CID I just thought of another feature:

At the 12th ring my phone rolls to voice mail. Set system for
allowing 11 rings for 800 numbers then "answer" (off hook for a few
seconds), prevents 800 crap in the voice mail ;-)

...Jim Thompson

Better yet, answer on the first ring: "This mailbox is full", then
hang-up ;-)

Even faster and lower power... Do what I do and unplug the (only)
phone and stick it in the drawer (the line is for DSL).

Jim Thompson · Jan 7, 2009

On Wed, 7 Jan 2009 11:26:06 -0600, krw <krw@att.zzzzzzzzz> wrote:

In article <ccl9m45g9h6cd25oumgud30asofaasl2im@4ax.com>, To-Email-
Use-The-Envelope-Icon@My-Web-Site.com says...
On 4 Jan 2009 23:19:34 GMT, Jasen Betts <jasen@xnet.co.nz> wrote:

On 2009-01-02, osr@uakron.edu <osr@uakron.edu> wrote:

Possible Sorting structure.

don't sort, hash instead.

Why do we need to sort at all?

Can't one of you digital gurus devise a memory addressing scheme
derived from the caller ID?

Sure, we can build anything you're prepared to pay for, but CAMs
tend to be expensive and suck power.

Huh? At these slow speeds?

Can't you devise a simple x-y addressing>

If the bit is "1" at that address, kill the number.

Sure, for this application simply search the black directory. If
the number is there kill it. If it's in the white directory pass
it immediately. ...but that isn't nearly as fun for the programmer
weenies as arguing about sort algorithms and hash tables. ;-)

Digital types do tend to make problems more difficult than necessary,
don't they ?

Jan 11, 2009

Wow....I'm the OP. So many responses...

This circuit is for measuring the temperature drop of air across a
huge intercooler I installed on my 1990 dodge daytona. I think it
would be fun to have a gauge which shows just how cold the incoming
air is, and then how cold it gets after exiting the enormous
intercooler AND water injection.

It is not used in any control loop.

Accuracy to 2 degrees F would be great.

Response time needs to be less than 0.5 second to catch rapid changes
in temperature as the boost increases rapidly.

I made up all the numbers in the preceding two sentences. Seems right
though..

I chose thermistors because thermocouples seemed like a pain, but that
chopper amp and thermocouple idea caught my attention so I might look
into it.

I need to find some really small thermistors to get a good response
rate.

Umm...I want it to be all analog JUST BECAUSE. Microcontrollers are
cheating. Its good to know at least half of you didnt even mention
MCU's (makes it easy to tell who REALLY knows circuit design).

Once I have the difference voltage I'll make a 7 segment display that
is all analog too somehow. Fun!

Jan 11, 2009

On 10 jan, 22:56, Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net>
wrote:

Bill Slomanwrote:
"Phil Hobbs" <pcdhSpamMeSensel...@electrooptical.net> schreef in bericht
news:49680E44.6050800@electrooptical.net...
Thermistors give you by far the best temperature control of anything. See
ABSE for a picture.

There are circumstances where this isn't true. Thermistors don't offer
particularly good thermal contact to the substrate whose temperature
they are measuring, and if you really want to push down the Johnson
noise from your resistance sensor, a big platinum resistance sensor in
good thermal contact with its substrate can dissipate enough extra
heat to overcome the 10:1 difference in sensitivity.

I spelled this out in a comment I published back in 1978

Sloman, A.W. "On microdegree thermostats",
Journal of Physics E: Scientific Instruments, 11, 967-968 (1978).

It's not of much practical relevance - the comment has never been
cited by anybody else - unless you really wanted to push the envelope.

I agree that thin-film RTDs on alumina are good for fast response, but
very small glass-bead devices like the YSI matched ones are good
too--provided that you don't pot them in epoxy or do something silly
like that. It's certainly easier to get a good fast thermal interface
with a flat piece of alumina, e.g. by indium bonding. I usually use
drill holes with hemispherical bottoms and glass bead thermistors,
attached with alumina-loaded epoxy and held down by springy leads during
cure.

My interest was slightly different - thermistors are Johnson-noise
limited to a couple of microdegrees, while decent sized platinum
resistance sensors dissiating at lot more power could go down another
order of magnitude.

The other problem is the bandwidth. Like any other feedback loop,
temperature controllers live and die by their loop gain, which depends
on the sensor speed, which in turn tends to slow down quadratically with
size and distance from the source. So there's a huge premium on small
sensors and actuators, placed very close to the cold plate.

Don't remind me. My paper on our Peltier junction based milli-degree
controller goes into this a bit - if we could have increased the gain
at the cycling frequency of our air-conditioning system, we would have
had even tighter control. Since we only needed to control to better
than 10 millidegrees, we didn't bother to try.

I like to use the monitor photodiode inside the laser can for
temperature control--you can get sub-second response times, which means
that you can maintain decent control over a wider bandwidth. My best
one was for a pocket-sized 3D scanner (sort of a cross between a
coordinate measuring machine and a digital camera)...it had a TO5-can
diode laser sitting on two big (2520 size) surface mount resistors for
heating, the monitor PD for a temperature sensor--it had about a 1.5 Hz
control bandwidth, which is pretty good for a temperature controller.
(Laser cooling systems can achieve kilohertz bandwidths on very small
systems like molecules or micron-sized particles.)

Another cute feature is that its collimation was electrically
adjustable--there was a pre-squashed Nitinol ring between the collimator
and the laser can, so you just cranked up the heat until the Nitinol
expanded just the right amount. That was intended for one-time use
during manufacturing--there wasn't enough of a preload to squash the
Nitinol down again.

Sounds like fun. One of my old friends was involved with a system that
used Nitinol to control the focus - and it seems to have been
something of a disaster. The phsyicist who invented the system wass
too infatuated with his brain-child to see its defects.

--
Bill Sloman, Nijmegen

Robert Baer · Jan 11, 2009

Jon Slaughter wrote:

"Robert Baer" <robertbaer@localnet.com> wrote in message
news:jPydnQABK6jgfEjVnZ2dnUVZ_gmdnZ2d@posted.localnet...

..that is what the damn window says with the following incomplete and
useless "Access is denied" message.
Access to what? Where? Why? --- ZERO info. POS.
This happens almost exactly half the way thru the process as seen by the
progress bar.
What is more irritating that all of the work that had been done is then
UNDONE!

How in the #$&@#)^%!%^# can this be fixed?

Usually it is a issue withe file system. I've had that problem on a "bad"
cd. Used a different cd and it worked.

So..i should use a different SP4 CD?

Robert Baer · Jan 11, 2009

Jamie wrote:

Robert Baer wrote:

Remember i am on dial-up so a long file (>2megs) takes a long time
and the longer the time, the more likely it can be trashed or lost.
My particular problem is that i cannot download the following:
http://www.mdgx.com/files/NV8269.EXE which is about 14Megs in size.
It always terminates somewhere in the middle (using NetScrape's
"download manager").
I tried GetIt Right, and it instantly dies with a 403.
But recently, i had to install AVG and update it, which took *two
hours* and everything went OK, raising the question do they do
on-the-fly error checking and backtrack on error? If so, then that
amazing 2-hr stint can be ignored.
*
How can i get that NVIDIA file?

I bet it terminates around 10 megs?

http://webpages.charter.net/jamie_5"

Most likely; i start dozing before that and when i wake up, *poof*.

Once, tho, it "completed" giving me a ~530K file.

Phil Hobbs · Jan 11, 2009

bill.sloman@ieee.org wrote:

On 10 jan, 22:56, Phil Hobbs <pcdhSpamMeSensel...@electrooptical.net
wrote:
Bill Slomanwrote:
snip
My interest was slightly different - thermistors are Johnson-noise
limited to a couple of microdegrees, while decent sized platinum
resistance sensors dissiating at lot more power could go down another
order of magnitude.

I dream of being Johnson-limited in a bandwidth of 0-1 Hz.

<snip>

Another cute feature is that its collimation was electrically
adjustable--there was a pre-squashed Nitinol ring between the collimator
and the laser can, so you just cranked up the heat until the Nitinol
expanded just the right amount. That was intended for one-time use
during manufacturing--there wasn't enough of a preload to squash the
Nitinol down again.

Sounds like fun. One of my old friends was involved with a system that
used Nitinol to control the focus - and it seems to have been
something of a disaster. The phsyicist who invented the system wass
too infatuated with his brain-child to see its defects.

Nitinol is deceptively easy to use for low-precision stuff, e.g.
Japanese greeting cards where a cutout waves to you and sings a song.
For higher precision things you have to really design with it. Just
using it to turn a focusing screw against a return spring is *not* a
real design--you have to have a bloody great preload to avoid dying from
vibration and shock. My gizmo's Nitinol ring was shaped like a washer,
and went between the laser can and the collimator. The force required
to pre-squash it was about 500 pounds--no vibration worries there.

Cheers,

Phil Hobbs

Jim Thompson · Jan 11, 2009

On Sun, 11 Jan 2009 03:15:28 -0800, Robert Baer
<robertbaer@localnet.com> wrote:

Jim Thompson wrote:

On Wed, 10 Dec 2008 11:55:15 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote:

[snip]

With "kill" based on CID I just thought of another feature:

At the 12th ring my phone rolls to voice mail. Set system for
allowing 11 rings for 800 numbers then "answer" (off hook for a few
seconds), prevents 800 crap in the voice mail ;-)

...Jim Thompson

New thoughts...

"Please hold for the next available agent.

While you are waiting please listen carefully to the following
choices:

If you calling from a call center located outside the United States,
stop deluding yourself that you live in an English-speaking country.
You don't speak proper English! Hang up NOW!

..."

Please add your thoughts ;-)

...Jim Thompson
Possible option; totally useless in my case.

J.A. Legris · Jan 11, 2009

On Jan 9, 2:51 pm, D from BC <myrealaddr...@comic.com> wrote:

On Fri, 9 Jan 2009 07:30:11 -0800 (PST), "J.A. Legris"

jaleg...@sympatico.ca> wrote:
On Jan 9, 1:37 am, D from BC <myrealaddr...@comic.com> wrote:
On Thu, 8 Jan 2009 19:36:18 -0800 (PST), "J.A. Legris"

jaleg...@sympatico.ca> wrote:

snip

The equation gives the total flux (Webers), not the flux density
(Tesla or Webers/m^2). You are using SI units so if you want to talk
about flux density in gauss instead of Tesla you must multiply by
10^4. To convert Webers to Tesla (averaged over the core), divide by
the cross-sectional area.

For your example:

p = uo*ur*I*d*ln(ro/ri)/2*pi
= 4pi*10^-7*4000*1 amp*.01m*ln(.0013/.0003)/2pi
= 4pi*10^-7*4000*1 amp*.01m*ln(.0013/.0003)/2pi
= 0.0000117 Wb

divide by cross-section: = .01m*.001m = 10^-5 m^2

= 1.17 T = 11,700 gauss

Yikes.. 11.7kG
I suppose all the ferrite material will saturate in the above example.
The small signal inductance will be no different than an air core.

ok...
How about I try to solve what toroid ID and OD is barely ok.

Say B = 4000 Gauss

0.4T = Webers/10^-5m^2

Webers = 4E-6

4E-6 = uo*ur*I*d*ln(ro/ri)/2*pi

ln(ro/ri) = 4E-6*pi*2/uo*ur*I*d

Say ur = 4000

ln(ro/ri) = 0.5

e^0.5 = 1.65

So if ri = 0.3mm then ro = 0.3mm*1.65=~ 0.5mm

The toroid got thinner???
I suppose the less core volume enveloping the wire.. the less flux
density in the core.

No, you forgot that you set the core's cross-sectional area at 10^-5
m^2, which constrains ro and ri.

Solving for ri:

A = d (ro-ri)
= d (1.65ri - ri)
= d*0.65ri
ri = A/0.65d
= 10^-5 m^2 / 0.65*10^-2m
= 1.54mm
ro= 1.65*1.54mm = 2.54 mm

As you suspected, you need a bigger core. The fact that you managed to
need one with an O.D. of exactly 0.1" must be some kind of cosmic
proof that you're on the right track

oops.. That's right.
No wonder my electronics is so crappy, my math sucks.. Grrr...

ok...trying again...Perhaps I'll get your result...

(uo*ur*I*d*ln(ro/ri)*(1/(2*pi)
B= _____________________________ Tesla
d(ro-ri)

d cancels out. ur=4000, B=0.4T

ro-ri uo*ur*I*(1/(2*pi)) 4E-7*4000*1*0.5 <<cancelled pi's
--------- = ------------------- = ---------------
ln(ro/ri) B 0.4

ro-ri
-------- = 0.002
ln(ro/ri)

ro/ri = e^(500*(ro-ri))
= (e^500)^(ro-ri)

e^500 ??? Stuck again

Anyways....
Here's what I'm attempting to do with all this theory.

Can a straight wire power inductor with stacked ferrite toroids have
less core loss than other inductor constructions.

Sideview:

============== <stacked toroids
--------------------- < wire
=============
f= 800khz
Ibias = 1A
Iac = 100mA
L ~390uH
Low core loss

According to online straight wire inductance calculator on:http://www.consultrsr.com/resources/eis/induct5.htm

I'll need 80cm of 1mm wire in a material with u= 10000.

Thoughts....

A straight-wire power inductor wastes space and core material compared
to a wound toroid. As you have seen, the field within a toroid on a
straight wire is not uniform so you'll have to choose your operating
point to avoid core saturation near the wire while wasting capacity
near the outside. This can be mitigated by using a bigger toroid, but
then you need even more space. A wound toroid has a nearly uniform
field inside, so its size can be optimized. Furthermore, inductance in
a wound coil is proportional to the SQUARE of the number of turns, not
just the length of the core. Core loss increases with maximum flux
density, so again, the wound toroid would be the way to go.

80 cm??? I rest my case.

--
Joe

MooseFET · Jan 11, 2009

On Jan 10, 9:03 pm, krw <k...@att.bizzzzzzzzzzz> wrote:

On Sat, 10 Jan 2009 15:41:01 -0800 (PST), MooseFET

kensm...@rahul.net> wrote:
On Jan 10, 9:27 am, krw <k...@att.bizzzzzzzzzzz> wrote:
On Sat, 10 Jan 2009 09:13:02 -0800 (PST), MooseFET

kensm...@rahul.net> wrote:
On Jan 10, 8:33 am, buleg...@columbus.rr.com wrote:
On Jan 10, 11:30 am, krw <k...@att.bizzzzzzzzzzz> wrote:

If he doesn't screw it up (far) worse, it will count as a miracle..

I think at this point they are all rearranging the deck chair on the
Titanic

For years it has been "other than the cancer, the patient is
healthy". Now it seems that it has a bad heart and a broken leg too.
We can fix the problems one at a time but it is going to take a while..

The problem is Obama bin Biden is going to break the other leg, two
arms, and shoot the patient as a cure. >$1T deficits as far as the
eye can see. Come on!

Obama will most likely leave office with a budget closer to balanced
that any we have had in the last 5 or so years. The cost of the Iraq
war etc will have to be paid off so we can expect some drag on the
economy from that. The fluff in the markets should be gone by the end
of this year. After that spending will start to decrease rapidly.

You're full of shit.

Only time will prove me right.

Remember, all politicians lie. Republicans say they will cut spending
and always spend like drunken sailors. Democrats promise lots of new
spending but then never seem to have enough budget to do it.

They seem to have found about $4T to spend THIS YEAR.

The economy is heading south. It is very bad to suddenly cut spending
in that situation.

Martin Riddle · Jan 12, 2009

Send some of that CO2 to the northeast, brrrrrr we could use it.

Cheers

"Raveninghorde" <raveninghorde@invalid> wrote in message
news:c61lm4lpjpop2kb1hv5198vuescji888nj@4ax.com...

So what do the AGW crowd measure? Not CO2 apparantly.

http://www.globalwarmingskeptics.info/phpbb3/viewtopic.php?f=5&t=585&p=4175#p4175

What is the historical level of CO2? We are told 280ppmv from ice
cores. But there are direct measurements from about 1810 sowing a rise
from about 385ppmv in 1810 (todays level) to 430ppmv before dropping
back to 290ppmv in 1895.

http://www.biokurs.de/treibhaus/180CO2/bayreuth/bayreuth1e.htm

The more one looks the dodgier the basics look.

miso@sushi.com · Jan 12, 2009

On Jan 11, 3:38 pm, rebel <m...@privacy.net> wrote:

On Fri, 09 Jan 2009 21:10:18 -0800, Scott Ronald <scottm...@gmail.com> wrote:
rebel wrote:
On Fri, 09 Jan 2009 22:21:55 +0100, Jan <Nos...@nospam.nono> wrote:

rebel wrote:

On Thu, 08 Jan 2009 19:41:18 -0800, Scott Ronald <scottm...@gmail.com
wrote:

Hi I am wondering about the best way to charge lead acid batteries from
a source that cannot be relied on for constant power such as wind, or
solar. So far I am looking at 2 ways to do this:

Cycle charging
For this method I need a constant current, until the charge voltage is
reached, then maintain the charge voltage for a time, or until the
current drops to a minimum, after which I drop to a float voltage.
The difficulty with this is that the charge cycle can be interrupted at
any time, and might be restarted when the battery is partly or fully
charged.

Floating
For this I would set the current limit to the maximum battery charging
limit plus the battery's output current, and set the regulation voltage
to the lead acid float voltage. From the reading I have done on this
topic I believe that this will shorten the service life of the battery.
(a) Attend to what Ed said.

(b) Are you thinking of flooded cells, SLA/VRLA or ... ?

(c) Why do you think your "cycle charging" approach is compromised by the
intermittent source?
Lead acid batteries are best charged with a constant voltage source.
Charge current depends on the state of the charge of the battery.
It works similar in a car.

Constant voltage source and a discharged battery can mean quite huge intial
charge current. In ALL types there needs to be SOME mechanism for limiting
current into the battery. Whether this is intrinsic in the charger (which it
often is) defines the need to provide a specific limiting mechanism.

For SLA types, simple CV charging is NOT the regime of choice. A worthwhile
read on care and feeding of SLA's can be found in Unitrode (now TI) app note
U-104 (search for SLUA115.pdf).

I'm still waiting to see the O/P's responses to (b) and (c) above.
(b) I am dealing with SLA at the moment, but I am interested in learning
about VRLA as well.

(c) according to this site:http://www.batteryuniversity.com/partone-13.htm
The stage 2: "constant voltage" is required for a fixed time (assuming
you are charging a battery from a discharged state) for optimal battery
life. I cannot guarantee that 1. the battery is discharged when the
regulator powers up and 2. That the power will be on for the fixed time.
Using a fixed time is not practical, unless another termination
condition (such as temperature, or current) is used.

Did you read the Unitrode AppNote? The regime used by that controller chip
(UC3906) can be restarted at will regardless of the SOC of the SLA. The only
requirement is that the charger can deliver *enough* current to trigger the
changes to the charge mode.

To provide a few more details, I am working with a 3.6kW power supply
with both programmable voltage regulation and programmable current
limiting. Obviously the 3.6kW number is not guaranteed, depending on
wind or solar conditions, so the current limit may not even come into
effect, and the supply may not be able to reach the desired voltage
either. I am looking for the method that will cause the least damage to
the batteries using this type of supply.

Scott

I read it. Good reference. They go into the tempco.

Jim Thompson · Jan 12, 2009

On Sun, 11 Jan 2009 17:57:39 -0800 (PST), "David L. Jones"
<altzone@gmail.com> wrote:

On Jan 10, 4:11 am, John Larkin
jjlar...@highNOTlandTHIStechnologyPART.com> wrote:
http://news.cnet.com/8301-13772_3-10138054-52.html

The new Ford Fiesta looks good:
http://au.youtube.com/watch?v=DbDEWAf9vmU
Handy in a beach assault, and the cup holders fit smoke grenades quite
nicely!

Dave.

Mark Zenier · Jan 12, 2009

In article <w6qal.15274$Nv1.11841@newsfe03.iad>,
Jamie <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

Here's your vocabulary lesson for today.

Liquidity:

When you look at your investments and wet your pants.

I heard a documentary on Radio Australia, "A Current Affairs Special"
on what caused this mess, where they interviewed several bond traders
and "financial engineers". One of the bond traders brought up an
interesting cause. New accounting rules require that their holdings
be accounted as "Mark to Market" (or something like that) where their
investments have to be valued at the latest market price even if they
have no intention of selling at that price. Long term investments
end up showing up a short term losses. Especially if somebody else
has had to liquidate their holdings of the same financial instrument in
an emergency.

A really bad example of positive feedback. Transparency gone wrong.

Another observation. The guilty parties are laying down the thickest
smoke screen of spin that I've ever seen. The "those damn poor folks
who bought houses they can't afford caused this" and "the bailout
will cause a depression" should be taken with a grain of salt. Don't
trust anything that the right wing noise machine starts chanting in
unison.

Mark Zenier mzenier@eskimo.com
Googleproofaddress(account:mzenier provider:eskimo domain:com)

Eeyore · Jan 13, 2009

Nico Coesel wrote:

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote:

You enjoy quick cars don't you ? Go on, I dare you. You ought to be able
to get one as a personal import hopefully.

Just imagine leaving those 'muscle cars' at the lights. This is the 'Q
car' par excellence !
http://en.wikipedia.org/wiki/Sleeper_(car)

" Smart cars have been modified by Brabus of Germany, resulting in
Brabus production models. Other companies modify the Smart to use
motorcycle engines, such as the Suzuki Hayabusa 1340 cc inline
four-cylinder. These cars are known as Smartuki. The most powerful
models can accelerate from 0 to 60 mph (0 to 100 km/h) in less than 3.5
seconds."

But do you know why the Smart has different tire widths on the front
and rear axles?

Not explicitly, but it's not unheard of.

Graham

Skybuck Flying · Jan 13, 2009

Jim Yanik" <jyanik@abuse.gov> wrote in message
news:Xns9B925C5E3B70Bjyanikkuanet@74.209.136.84...
Robert Baer <robertbaer@localnet.com> wrote in
news:mYWdnRYUk7m2tvHUnZ2dnUVZ_qDinZ2d@posted.localnet:

Skybuck Flying wrote:

Hello,

The dutch goverment wants it's citizens to always carry their
identification cards with them.

Different dutch goverment websites mention there is a chip in these
identification cards and can be read by a machine.

It never mentions the range of these cards/chips.

So again I ask the question:

What is the transmit range of these cards ?

Again I am worried about leaking information to criminals on the
street.

Bye,
Skybuck.

Well, if you carry one of those around, you will GET IN DUTCH!

Shield it,just keep the passport in a closed foil bag.
If it can't be interrogated,it can't be read.

Passive RFID range is around less than a foot.

I was thinking about an aluminium wallet.

Maybe some day I buy it...

But kinda sucks to be forced to be something unfashionable

Not gonna fush with aluminium foil in my pocket that's stupid/inconvenient !

Some even say strong signals can still go through !

Bye,
Skybuck.

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