That assumes so much... Err... on a TO-92 case, the base is the middle one, right? How do you know which is the emitter and which is the collector? -- James. -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of Jinx Sent: Sunday, May 18, 2008 18:16 To: Microcontroller discussion list - Public. Subject: Re: [EE] Parallel Port nSelect pin relay driver BTW, you have got the transistor wired up right ? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist