View Single Post
Old 03-13-2012, 11:51 AM
gyula gyula is offline
Silver Member
Join Date: Apr 2007
Posts: 809
Originally Posted by jimboot View Post
Hi all I can light my bog standard 25watt bayonet cap 240 v lamp but I keep blowing tip41c even with heat sinks. @laurent I notice you do nt use any cooling on yours. Do they get hot? I'm using a 1k pot.
Hi Jim,

Probably the 100-110V max collector-emitter breakdown voltage limit for the TIP31C is to 'blame' for the blowing. Here is a more robust type, MJE13007

try to use such higher than 100V power switching types.

Reply With Quote