Thanks Stevo for your help,
It seems DSE don't have the BTA140-600 but I did find a mob called
Rockby Electronics in Melbourne have them for $7 dollars something.
It would be much safer to get it.
--- In firstname.lastname@example.org
, "stevolate" <stevolate@...>
> Hi Marc
> I just found some info Mike N sent to me.
> My electronics guy agreed with Mike. His message below.
> One small modification you might consider though change the triac
> are using from a BT139-600 16amp to a BTA140-600. It has the same
> current and voltage rating, and is identical except in one
> respect it has internal ceramic insulation that prevents mains
> being connected to the metal backing tab. As the triac is attached
> the heat sink by this tab, this means that you will no longer have
> "live" heat sink, and your controller will be a lot safer to
> All the best,
> Mike N
> > Hi Stevo,
> > Stevo I found it through the archives, where and when, don't
> It's one
> > of the problems of a big data base. Gees, sorry Stevo it's not
> > Drink just finisnhed
> > Marc