On Tue, 6 Oct 2009 20:40:01 +0300, "Marechiare" said: > That variations are exactly what I did in real life. For larger > variations of the divider's ratio I used Schottky diodes on inputs to > limit the input voltage (was within the specs for that parts). Resistor in series and Schottky diode clamp to the 3V supply? Be careful about how much current it pumps into the 3V supply so as not to raise it or hold the 3V circuit from reset on power up/down. Especially if you have several pins to convert levels upon. On another note, you guys seem to have picked ever so slightly different ground to defend so the shots don't seem to be hitting anything interesting. There also doesn't seem to be a lot of [PIC] going on. Care to call a cease-fire until another hill is found to claim? Thanks, Bob -- http://www.fastmail.fm - Or how I learned to stop worrying and love email again -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist