-List, Anyone here ever measure very low temperatures (-100=BAC) by measuring = Vforward for a given Iforward? There are several high dollar diodes out there (GaAlAs, GaAs, and Si) = that are extremely well characterized and thus good for the task, but = I'm trying to stay on the cheap here. Does anyone have any data about Vforward vs Temp for a common (i.e. = cheap) Si diode at very low temperatures? =20 I've been googling for a day and a half now on this project with limited = success. =20 Thanks in advance. Robert Mash 740.592.2655 -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads