What about a ubicuous MAX232? Sure, you have one on the desk. To low the -10V to -5 you can use 3 LED in series... This is as quick and dirty as it could be, isnt't it? Only a few mA, though... Regards, Alvaro Deibe ----- Original Message ----- From: "John Walshe" To: Sent: Wednesday, February 06, 2002 5:09 PM Subject: [EE]: quick'n'dirty positive to negative convertor > Hi guys'n'gals, > Has anyone got any neat ideas on how to a +5v to -5V converter for a > power supply. Only a few milliamps required on each rail. It's a once off > for something I'm trying at home. I did try just splitting the supply but > for some reason the positive circuit didn't like it (it wouldn't work!). > I must invest in a dual rail PSU sometime! > Any thoughts appreciated, > John > > -- > 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