I've just purchased some Zetez (now Diodes Inc) ZXCT1081's for a=20 voltage/current logger which might work for you. http://www.diodes.com/datasheets/ZXCT1081.pdf Colin -- cdb, colin@btech-online.co.uk on 26/06/2011 =20 Web presence: www.btech-online.co.uk =20 =20 Hosted by: www.justhost.com.au =20 =20 =20 =20 =20 =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .