Power Supply TO220 vs TO3?

[Harry Bissell]

The thermal shutdown will not work "forever". You are expected to know that
thermal
limit is occurring, and remove the source of the problem !  They "might" catch
fire
eventually.  (well the magic smoke will come out anyway...)

H^) harry

danial stocks wrote:

> > > An engineer friend dropped by and said my +/-12v PS design
> >
> > > would simply
> >
> > > catch fire because I'd used TO220 7812 & 7912 regulators
> >
> > > instead of going
> >
> > > with TO3 packages.
>
> This will definitely NOT happen as the 78xx, 79xx have thermal shutdown in
> the chip. maybe they wont work, but they wont catch fire..
> Cheers,
> Dan
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