But what type of screw would I use for this, that would take the heat? Cheers, -Neil. -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Benjamin Bromilow Sent: Monday, July 01, 2002 2:54 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [EE]: Regulator grounds... Hi Neil, You could use a mica electrically insulating washer between the TO220s and the heatsink... AFAIK that should sort it :) Ben -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads