Perhaps the very common 555 Integrated cirvuit chip will also do ----- Original Message ----- From: "Harold M Hallikainen" To: Sent: Friday, July 26, 2002 10:01 PM Subject: Re: [OT]: need simple transistor based schmitt trigger circuit > I believe to make a schmitt, you're going to need two transistors and > several resistors. How about just using a chip? For example, the > http://www.fairchildsemi.com/ds/NC/NC7NZ17.pdf works down to 1.65V. > > Harold > > On Thu, 25 Jul 2002 20:06:32 -0700 John Waters > writes: > > Hi all, > > > > Could someone suggest me a simple transistor based schmitt trigger > > circuit > > that uses 3 volts as Vcc and has big difference in turn ON and turn > > OFF > > voltages at output, i.e. big hysteresis window? I want to use it to > > recover > > a slow changing but noisy binary signal (signal that is made up by > > only two > > voltage levels between 3 volts). > > > > Thanks in advance! > > > > John > > > > _________________________________________________________________ > > Send and receive Hotmail on your mobile device: > > http://mobile.msn.com > > > > -- > > http://www.piclist.com hint: To leave the PICList > > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > > > > FCC Rules Online at http://hallikainen.com/FccRules > Lighting control for theatre and television at http://www.dovesystems.com > > Reach broadcasters, engineers, manufacturers, compliance labs, and > attorneys. > Advertise at http://www.hallikainen.com/FccRules/ . > > > ________________________________________________________________ > GET INTERNET ACCESS FROM JUNO! > Juno offers FREE or PREMIUM Internet access for less! > Join Juno today! For your FREE software, visit: > http://dl.www.juno.com/get/web/. > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads > > > -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads