Return-Path: Received: from mail.eclipse.net ([207.207.192.13]) by ns1.olsusa.com (Post.Office MTA v3.5.3 release 223 ID# 0-64832U3500L350S0V35) with ESMTP id com for ; Sun, 19 Mar 2000 12:31:15 -0500 Received: from rock72 (njc2-01-120.dial.nyc.eclipse.net [207.207.226.120]) by mail.eclipse.net (8.9.1a/8.9.1) with SMTP id MAA17254 for ; Sun, 19 Mar 2000 12:28:18 -0500 (EST) Message-ID: <07c401bf91c8$81055400$6ec8c8c8@brynmawr.edu> From: "Ed McCauley" To: References: <000901bf9173$afb981e0$80b10c18@bvrtn1.or.home.com> Subject: 10 LED position sensor Date: Sun, 19 Mar 2000 12:28:10 -0500 X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> Andrew, The 7805 is a voltage regulator. I use them all the time. Because you're seeing the led light (even briefly), it _sounds_like_ you're not connecting the 7805 correctly. Assuming you have a package that looks like this: *********** * ( ) * *********** * 7805 * * * * * * * *********** * * * * * * * * * * * * 1 2 3 with the IC numbers (and body of the package facing you), Pin 1 goes to +12 (or without getting too detailed, whatever the inbound voltage is. Pin 2 goes to GND or COMMON and pin 3 is the regulated 5v output. Bursting into flames is not one of the chips features! Hope this helps. -Ed McCauley Lancair IV-P -13.8% Milford, NJ >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html Builders' Bookstore: http://www.buildersbooks.com/lancair Please send your photos and drawings to marvkaye@olsusa.com. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>