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RFID
Sci.Electronics.Design is a worldwide Usenet news group that is used to discuss various aspects of Electronic Circuit Design.
We found 25 threads matching "rfid"
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The most relevant threads are listed first
rfid system guidelines?
poster - 2008-09-10 08:06:00
For example -there is a 30*30 meter warehouse with a lot of metallic
products- to ensure fast and reliable reading does one go for a dense
reader deployment with reader controllers, or metalic rfid tags in
normal reader configuration could do the job. How about a wi-fi system
or a case when you ...
Ping: Joerg
Jan Panteltje - 2008-06-25 09:14:00
Joerg, maybe this will interest you:
RFID tags stop medical equipment:
http://www.heise.de/newsticker/Studie-RFID-Systeme-beeinflussen-Medizintechnik--/meldung/109971/from/atom10
List:
http://www.amc.nl/?pid=5266
...Need to know how to design the RFID antenna.
2008-09-25 17:32:00
Hi,
I want to learn how to design RFID antenna. Do any one could help me
out with this.
Thanks.
Chinthu
...RFID tags in Arctic conditions?
Fatfreek - 2007-12-31 15:03:00
I have an application in which RFID tags need to respond and send data while
at very cold (10 deg F to -30 deg F) temperatures. They will have been put
in place for up to one year. While not exactly the application, it's as if I
were attaching RFID tags to the entrances of Arctic Fox dens - a ve...Re: universal remote control standards
default - 2008-03-07 12:53:00
On Thu, 6 Mar 2008 18:26:42 +0100 (CET), sky465nm@trline5.org wrote:
> > > Do the mankind a a favour and build a cheap TV-B-Gone-s :)
>
> > Ditto that last sentiment. Great fun in Walmart.
>
> I realy HATE these babbling TVs with flashcards that babbles about worthless
> products. That ...RFIDs close to HV power lines
Efthimios - 2008-09-13 18:58:00
Does any of you know if passive RFID will work close (3-4 meters) to
high voltage power lines (275kVolt).
I think yes since they work in FR frequencies and power lines have
60-50 Hz despite the strong electromagnetic fields. Do you agree???
...Book recommendation?
2009-04-08 13:14:00
Hi all,
Can anyone recommend a good book about how to connect different
chips from different manufacturers into a single device? E.g., an
RFID reader from TI, a microprocessor from Intel, and a wireless
transceiver from somebody else. I don't even know what to look for...
I've searched f...Good custom coil supplier?
Scott Newell - 2009-05-18 19:14:00
Does anyone know of a good custom coil supplier in the US?
I need some small (40mm OD) air core coils wound. It's an 125 kHz RFID
antenna.
Say, either 2.5mH or 750uH, exact value and DCR negotiable and TBD. I'd
like 5-
10 protos to test and tune with before ordering the first production ru...Re: Bluetooth
JosephKK - 2009-12-27 17:10:00
On Sat, 19 Dec 2009 15:31:56 -0800 (PST), martin_05 =
wrote:
> On Dec 19, 3:26=A0pm, martin_05 wrote:
> > Looking for an inexpensive way to implement bluetooth data
> > connectivity.
>
> I should add that the criteria isn't purely financial. There are many
> advantages to having a...Re: cat door uses metal detector as key
Eeyore - 2008-12-13 06:13:00
"acannell@wwc.com" wrote:
> How about making a metal detector which detects an iron pendant on a
> cat collar to unlock the cat door?
>
> Seems to me a BFO metal detector could easily detect a pea sized iron
> pellet, especially since there will be no dirt, and the pellet will be
> ...Sinusoidal oscillator configuration
Nick Zalutskiy - 2008-08-24 20:42:00
I am looking for a minimal hardware circuit to generate a 125 kHz
sinusoidal wave to be fed into the power stage that is in turn feeding
an antenna. The wave is used to generate a carrier frequency for an
RFID application.
I was thinking of using this [ http://www.ecsxtal.com/store/pdf/ecs-31....Re: Aluminium Foil around Mobile Phone... what will happen ?
Dave Platt - 2009-01-15 17:11:00
In article ,
Skybuck Flying wrote:
> One of these days I will go to my moather and ask her for her mobile phone
> and then I will wrap it in aluminium foil.
>
> And then I will tell (command) her (!) to call herself on the mobile phone !
> :)
>
> And then I/we will see what happ...Re: DOS Problem
Archimedes' Lever - 2009-03-24 22:36:00
On Tue, 24 Mar 2009 22:08:41 -0500, Jamie
wrote:
> Archimedes' Lever wrote:
>
> > On Tue, 24 Mar 2009 20:11:14 -0500, Jamie
> > wrote:
> >
> >
> > > JeffM wrote:
> > >
> > >
> > > > > att wrote:
> > > > >
> > > > >
> > > > > > Every machine had a coprocessor starting...Re: Transmit range of paspoorts/identification cards ?
Chris Jones - 2009-01-12 17:09:00
Pim Schaeffer wrote:
> 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 b...Help! Coil design?
Scott Newell - 2009-06-05 19:44:00
I'm having a terrible time getting an air core coil wound
for my RFID project. The big problem is that I simply don't
know how to specify a coil, and the engineers at the magnetics
company can't seem to help me fill in the blanks. Can anyone
shed some light on how I should procede?
I've tol...in-circuit spectral noise characterization?
BW - 2008-10-21 04:56:00
Hello!
When designing ultra low-noise PSU's and related circuits, what do you
use to characterize them with regards to noise ? One of my component
suppliers for example use an old HP 3571A Dynamic Signal Analyzer,
which is a DC-100 kHz spectrum analyzer, with a 50 ohm coax soldered
directly o...Re: SmartMeter: power for gas side
Jim Thompson - 2009-08-07 14:16:00
On Fri, 07 Aug 2009 13:07:36 -0500,
hal-usenet@ip-64-139-1-69.sjc.megapath.net (Hal Murray) wrote:
> PG&E rececntly installed SmartMeters at my place.
> http://www.pge.com/myhome/customerservice/meter/smartmeter/howsystemworks/
> (They did it without dropping electrical power or killing the ...Re: Startable Oscillator
Jim Thompson - 2009-09-08 13:05:00
On Tue, 08 Sep 2009 11:25:47 -0500, Tim Wescott
wrote:
> On Sun, 06 Sep 2009 01:36:16 -0700, Kolja wrote:
>
> > Hi,
> >
> > I need an oscillator circuit that starts immediately with a known
> > startup delay from an enable signal.
> > Frequency stability should be below 1% over r...Re: Heating-spy-chip usefull for burglars.
Willem-Jan Markerink - 2009-01-13 21:45:00
"Skybuck Flying" wrote in
news:c5c86$496d3d0b$d5337e4d$8242@cache4.tilbu1.nb.home.nl:
> Hello Mr. Burglar,
>
> I know your life is difficult as Burglar... constantly wondering to
> yourself...
>
> Is somebody home ? Is there anybody there ?
>
> Not to worry Mr. Burglar.
>...Re: USART configuration on a PIC18F4680 using an external crystal of 32 kHz
ssylee - 2009-02-25 23:36:00
On Feb 25, 8:08=A0pm, John Larkin
wrote:
> On Wed, 25 Feb 2009 20:10:45 -0500, "Stephen D. Barnes"
>
>
>
> wrote:
> > ssylee wrote:
> > > On a clearer note from my last message, I am hoping to have the PIC
> > > receive the data between the rates of 15300 and 15800, even tho...Re: Not just floormats
Jim Thompson - 2009-10-21 14:03:00
On Wed, 21 Oct 2009 13:57:41 -0400, "Michael A. Terrell"
wrote:
>
> Jim Thompson wrote:
> >
> > On Wed, 21 Oct 2009 03:37:41 -0400, "Michael A. Terrell"
> > wrote:
> >
> > >
> > > Jim Thompson wrote:
> > > >
> > > > On Wed, 21 Oct 2009 00:15:34 -0400, "Michael A. Ter...Re: home automation
miso@sushi.com - 2009-12-08 19:15:00
On Dec 8, 8:03=A0am, Joerg wrote:
> m...@sushi.com wrote:
> > On Dec 7, 9:59 am, Joerg wrote:
> > > m...@sushi.com wrote:
> > > > On Dec 6, 3:25 pm, Joerg wrote:
> > > > > John Larkin wrote:
> > > > > > We have this family cabin in the mountains and we'd like people to =
b...Modding an AM BCB radio for VLF reception
Frnak McKenney - 2008-12-28 22:00:00
I'd like to listen in on NIST's 60kHz time broadcasts on WWVB
"directly", but I like building things, and besides, I'm too chea...
er, "thrifty" to go out and buy a VLF-specific receiver.
Down in the basement (a.k.a. The Gorge of Eternal Electronic Peril)
I have a couple of AM/FM clock-radi...Re: USART configuration on a PIC18F4680 using an external crystal of 32 kHz
Raveninghorde - 2009-02-26 16:32:00
On Thu, 26 Feb 2009 13:18:34 -0800 (PST), ssylee
wrote:
> On Feb 26, 12:23 pm, Raveninghorde wrote:
> > On Thu, 26 Feb 2009 11:24:05 -0800 (PST), ssylee
> >
> >
> >
> > wrote:
> > > On Feb 26, 2:15 am, IanM wrote:
> > > > ssylee wrote:
> > > > > On Feb 25, 8:08 pm,...Re: USART configuration on a PIC18F4680 using an external crystal of 32 kHz
Jim Thompson - 2009-02-26 15:31:00
On Thu, 26 Feb 2009 20:23:21 +0000, Raveninghorde
wrote:
> On Thu, 26 Feb 2009 11:24:05 -0800 (PST), ssylee
> wrote:
>
> > On Feb 26, 2:15 am, IanM wrote:
> > > ssylee wrote:
> > > > On Feb 25, 8:08 pm, John Larkin
> > > > wrote:
> > > > > On Wed, 25 Feb 2009 20:10:45 ...