Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site dciem.UUCP Path: utzoo!dciem!king From: king@dciem.UUCP (Stephen King) Newsgroups: sci.electronics Subject: Re: 555 timer duty cycle Message-ID: <2554@dciem.UUCP> Date: Fri, 27-Nov-87 07:58:06 EST Article-I.D.: dciem.2554 Posted: Fri Nov 27 07:58:06 1987 Date-Received: Sun, 29-Nov-87 20:12:10 EST References: <9376@shemp.UCLA.EDU> Reply-To: king@dciem.UUCP (Stephen King) Organization: D.C.I.E.M., Toronto, Canada Lines: 12 Summary: In article <9376@shemp.UCLA.EDU> khayo@MATH.UCLA.EDU (Erazm J. Behr) writes: >Is there any way to wire the 555 to get an "on" time of >less than 50% of the cycle? <...> Yup. I did this at school some time ago, let's see if I remember...Oh, yes! I used a pair of diodes to route discharge current for the timing capacitor through a different resistor than the one used for charging. Good enough? ...sjk -- * Defence & Civil Institute * ...!utzoo!dciem!king * of Environmental Medicine * Stephen J King - Simulation & Training Group - (416) 635-2149