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tim s | 1 Aug 2004 01:27

Re: [OT:] PayPal Settlement

i got one also  not sure what it means although
----- Original Message -----
From: "Matthew Brush" <matthewbrush@...>
To: <PICLIST@...>
Sent: Saturday, July 31, 2004 6:28 AM
Subject: [OT:] PayPal Settlement

> Hello all,
>
> Has anybody else gotten the "Notice of Pendency of Class Action and
> Proposed Settlement" email from PayPal?  I don't speak legalese so I
> haven't a clue what exactly the details are, but it sounds like good
> news for all the PayPal haters.
>
> So can I get money from this settlement if I've never had any problems
> with PayPal?
>
> Thanks,
>
> MJ Brush
>
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Bob Barr | 1 Aug 2004 01:13

Re: [PIC:] Olin's Easyprog

On Sat, 31 Jul 2004 20:20:04 +0200, Jan-Erik Soderholm wrote:

(Apologies if I've misattributed this to Olin)
>Olin Lathrop wrote :
>
>> I've never heard of "E12" and "E24"...
>
>Is not that numbering system used everywhere ?
>
>http://www.logwell.com/tech/components/resistor_values.html
>

That's the first place that I've ever seen that "E" series of numbers
used to indicate different precisions of resistors. I've been working
in electronics so long that I've been accused of having worked as an
intern for Volta. :=)

Could this "E" convention perhaps be more commonly used in Europe than
in the U.S.?

Regards, Bob

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Martin Klingensmith | 1 Aug 2004 01:31

Re: [OT]: Digikey search plugin for Mozilla and Firefox browsers

Marc Nicholas wrote:
> Hi all....
>
> I hacked together a Mozilla/Firefox search plugin that will allow you to
> do Digikey inventory searches from within the search box in those two
> browsers.
>
> Is this of interest to anyone else? If so, I'll throw it on a web page and
> submit it as a registered plugin.
>
> -marc

Very interested.

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Jinx | 1 Aug 2004 02:26
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Re: [EE:] Olin's Easyprog

> Could this "E" convention perhaps be more commonly used in
> Europe than in the U.S.?

The terms are not unknown in the US

eg, Google for US E96 resistor

http://www.usmicrowaves.com/appnotes/usm_an_108.htm

Electronic Industry Alliance and ANSI

http://www.eia.org/

It may simply be that non-US companies traditionally use the term,
US companies do not. Chances are that if I see a circuit originating
from the US it will have components that are not common in general
usage elsewhere, such as 4.3k or 20uF. A UK circuit would more
likely be 4.7k and 22uF. As Jan-Erik mentioned, a hobbyist pack
of resistors bought here in NZ for example will be E12 values

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Jinx | 1 Aug 2004 03:02
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Re: [EE:] Pinout or other information about Nextel phone lcd's

> The manufacturer is Optrex and the model numbers that I can see
> printed are either DMF-51097, COB 51097C or PWB51218.

Probably house numbers - ie not OTS parts. Can you identify the
manufacturer of the IC

http://www.elektronikforum.de/ic-id/

or determine the pixel resolution of the display and look for
an equivalent with pinout info ?

> Who knows if we can do a lcd badge for piclist members ? :-)

"Badges ? We don need no steenkeeng badges" ;-)

http://wilstar.com/midi/badges.wav

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dpmohne | 1 Aug 2004 03:32

Re: [OT]: Digikey search plugin for Mozilla and Firefox browsers

Personally, I'd love to see this

Duane

On Sat, 31 Jul 2004, Marc Nicholas wrote:

> Hi all....
>
> I hacked together a Mozilla/Firefox search plugin that will allow you to
> do Digikey inventory searches from within the search box in those two
> browsers.
>
> Is this of interest to anyone else? If so, I'll throw it on a web page and
> submit it as a registered plugin.
>
> -marc
>
> P.S: I have no commercial ties with Digikey -- I just thought it would be
> way more convenient to type in a search box rather than their webpage.
>
> P.P.S: I can localize the plugin for U.S., Canadian, German, U.K., and
> Japan pricing...currently I have it working in US$ and CDN$.
>
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> (like ads or off topics) for you. See http://www.piclist.com/#topics
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Jan-Erik Soderholm | 1 Aug 2004 03:44
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Re: [PIC:] Olin's Easyprog

Bob Barr wrote :

> (Apologies if I've misattributed this to Olin)
> >Olin Lathrop wrote :
> >
> >> I've never heard of "E12" and "E24"...
> >
> >Is not that numbering system used everywhere ?
> >
> >http://www.logwell.com/tech/components/resistor_values.html
> >
>
> That's the first place that I've ever seen that "E" series of numbers
> used to indicate different precisions of resistors.

Yes, that's a bit confusing, they are not *directly* connected and are
not normaly specified that way.

But on the other hand, there would be no reason to produce 5% resistors
according to the E96 or E192 series, would there ? A number of
values would be overlapping within the tolerance limits.

And the absolutly highest (or lowest ?) tolerance resistors
(that is, with a very low %) are often not made according to
any of these tables, but in some "decade" (10, 20, 50, 100...) series.

> Could this "E" convention perhaps be more commonly used in Europe than
> in the U.S.?

Possibly, together with the "meter", the "kilogram" and other things
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Richard E. Teague | 1 Aug 2004 04:15
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Re: [EE:] Capacitor calculation


David, here is one for a wire over a plane.
Two parallel wires will take some more digging.

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David VanHorn | 1 Aug 2004 04:21

Re: [EE:] Capacitor calculation

At 09:18 PM 7/31/2004, Richard E. Teague wrote:

>David, here is one for a wire over a plane.
>Two parallel wires will take some more digging.

Yow! I knew it would be somewhat complex, but there's more there, than I thought there would be.

Typicals in this case, would be roughly 0.5" dia by 18" long, spacing anywhere from 0.5 - 20 inches, and a
plate area of 1-24 inches.

Messy eh?

Thanks!

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Scott Dattalo | 1 Aug 2004 04:57

Re: [EE:] Capacitor calculation

On Sat, 31 Jul 2004, David VanHorn wrote:

> Ok, here's a puzzler.
>
> How do you calculate capacitance between two rods, or a rod and a plate,
> where the separation distance is relatively large?

While working on a somewhat similar problem to the one you describe, I
came across Chalmers Butler's paper 'Capacitance of a finite-length
conducting cylindrical tube':

http://content.aip.org/JAPIAU/v51/i11/5607_1.html

You'll either have to buy this article or go to a University Library and
look it up there.

My objective was to validate some models I was creating for FastCap
(http://www.fastfieldsolvers.com/  - actually, the original source is
from MIT, but the one here has unix and windows versions available for
free downloading).

Due to the complexity of these types of problems, I wouldn't trust any of
the analytic solutions except for the ones that have very simple
geometries. Or, I'd trust them perhaps if I didn't want to accurate of an
answer. (Or perhaps you could glean some kind of trend from an analytic
solution.) In your case, the distance of the wire/bar from the plate is
relatively large. Simple analytic solutions for these types of geometries
typically assume that the distance is small, or equivalently, the plate
and wire extend indefinitely. When the space between conductors is on the
order of the size of the conductors, then the problem is very difficult to
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Gmane