Hello everybody, I have a transformer rated at 36VCT 0.8A. If I use a rectifying diode and a voltage regulator (LM 317T) to lower the voltage to 5VDC to charge my kindle fire rated at 5V 1.8A, will the transformer be able to handle this current? Also, the rectified voltage is 10VC which means I will be dropping 5V, so the total power dissipated will be 9W! Will a standard heat sink suffice or should I design this project differently? Thank you for the help Transformer link: http://www.allelectronics.com/make-a-store/item/TX-36/36VCT-0.8A-TRANSFORMER/1.html Heat sink: similar to http://www.ebay.com/itm/2-Pcs-TO-22...866?pt=LH_DefaultDomain_0&hash=item337cba997a edit: yes I know I can just buy a wal-wart and simplify everything but I'm trying to use the items I currently possess before buying anything new.