Power Supply TO220 vs TO3?

[danial stocks]

> > 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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