> this ? Because when I power the board, the 7805 gets very hot=20 > quickly and I had to pull it off (there is no power=20 > consumption as I haven't planted all the IC's yet). I am=20 it has to drop 13.8 - 5 =3D 8.8 volts. if you IC-s are consuming, let's say 200mA (only you know the exact value) then the power dissipation on 7805 would be 8.8 * 0.2 =3D 1.76 watts. I guess it will get quite hot without heatsink. aadu -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body