In that case Just a straight 7809 or 7810 also would not require isolating the tab and can be mounted straight to the metal chassis.
> If it were me, I'd just use a 9 or 10 volt three terminal regulator > (7809 or 7810) and skip the whole LM-317 or diodes in the ground leg > deal. It only serves to make the circuitry more involved , harder to > mount, and for NO advantage whatsoever. > > Kevin Custer >
