Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hplsla!tomb From: tomb@hplsla.HP.COM (Tom Bruhns) Newsgroups: sci.electronics Subject: Re: Spark plug Inductive pickup. Message-ID: <5170136@hplsla.HP.COM> Date: 13 May 91 22:27:08 GMT References: <1991May10.164429.4146@ducvax.auburn.edu> Organization: HP Lake Stevens, WA Lines: 10 whit@milton.u.washington.edu (John Whitmore) writes: >will have any effect. For something like a spark plug, there is >a fairly slow firing rate (7000 RPM on a four cylinder engine >would only be 17 milliseconds, and more cylinders or slower ^^^^ John, I think you're slipping... >revs would be longer time). Just set the monostable time constant >to 10 ms, and you'll get clean pulses from dirty input.