I never sleep ........ John
> -----Original Message----- > From: Brian Guralnick [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 28, 2004 11:56 PM > To: Protel EDA Forum > Subject: Re: [PEDA] Antenna coil > > > For spirals you could try Brians script as well for drafting after > > doin 'what ifs' in the other application. > > > > http://www.proteluser.com/bbs/showthread.php?t=17 > > > > John > > Hey, I was just replying to that as well....... You won > hitting the "Send" > on your email by a few seconds... > > _____________ > Brian Guralnick > > > ----- Original Message ----- > From: "John A. Ross [RSDTV]" <[EMAIL PROTECTED]> > To: "'Protel EDA Forum'" <[EMAIL PROTECTED]> > Sent: Sunday, March 28, 2004 5:57 PM > Subject: Re: [PEDA] Antenna coil > > > > > > > -----Original Message----- > > > From: matt [mailto:[EMAIL PROTECTED] > > > Sent: Sunday, March 28, 2004 10:18 PM > > > To: Protel EDA Forum > > > Subject: Re: [PEDA] Antenna coil > > > > > > you may try to design a spiral inductor instead . Download > > > the free software called Appcad (from Agilent) , it has > > > spiral inductors design. Play some what if scenarios with it > > > and you'll see if you can do it one way or another, with and > > > without vias . > > > > > > Best Regards, > > > Matt Tudor , MSEE > > > > > > ----- Original Message ----- > > > From: "John C. Echols" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Sunday, March 28, 2004 3:32 PM > > > Subject: [PEDA] Antenna coil > > > > > > > > > > I'm the guy still using Protel 1.61 (1992) with Windows > > > 3.11 and I'm > > > > on a phone line....now that you're through laughing my > > > question is - > > > > my present project requires a coil for an antenna for a > "prox" card > > > > reader. The coil is about 3.25 X 4.25", 700uHy and takes > > > 60 turns of > > > > mag wire. Can I do this with traces? The easiest would be > > > 30 turns on > > > > one side and one via to do 30 on the back. I'd probably go > > > .004/.004" > > > > so it's not too hard for the board house and would only > > > take .24 width > > > > of board space. Will this work or is the spacing too > big? Or do I > > > > need to do one turn on top, the next on bottom, next on > > > top, etc? All > > > > the vias would take up too much room. > > > > > > > > Thanks for the help. > > > > > > > > John Echols > > > > > > > > > > > > > > > > > > > > > > > > > > > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[EMAIL PROTECTED] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
