At 02:32 PM 8/22/00 , you wrote: >>what have i done this time? > >Are you sure you have a proper regulated power supply? A 7815/7915 will not do. You need a LM723-based PSU or something similar. >Your problems sound like typical supply voltage regulation errors. > >/Jorgen > indeed i used 7815/7915 can u give more details about the lm723 psu? E.