> 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
Look on the bright side - the new virii and worms that plague today's systems probably won't affect your old system. Most of the vulnerabilities they exploit don't exist in those older systems. Still using a 486? :-) Although I mostly use 99SE, I still keep a functioning install of Protel 2.8 on a Win95 machine when I want to do pin swapping. That's on a circa 1996 Dell 200 MHz P1. When you test your PCB antenna loop, please let us know how it works out. I've also heard of this being done using E-core magnetics to make power transformers in switchers, sandwiching the PCB inbetween the 2 core halves. Best regards, Ivan Baggett Bagotronix Inc. website: www.bagotronix.com ----- 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
