Path: utzoo!utgpu!water!watmath!uunet!ukma!cbosgd!ihnp4!chinet!ignatz From: ignatz@chinet.UUCP (Dave Ihnat) Newsgroups: unix-pc.general Subject: Re: That mystery 4th LED... Summary: Forget the voltage; how about current drain? Message-ID: <2059@chinet.UUCP> Date: 4 Jan 88 01:43:13 GMT References: <172@bacchus.UUCP> <672@umbc3.UMD.EDU> Reply-To: ignatz@chinet.UUCP (Dave Ihnat) Organization: Analysts International Corp., Chicago Lines: 8 I'd agree that you want to use at least a transistor; I don't know what over-driving the power source of the LED with a coil would do to the 3b1 without seeing the schematic, but I hate empirical experiments, myself... -- Dave Ihnat ihnp4!homebru!ignatz || ihnp4!chinet!ignatz (w) (312) 882-4673