> An emitter follower will always introduce a Vbe drop, and it will spoil
> the regulation. =A0A much better solution is to use a PNP transistor as
> described in many of the 3 terminal regulator application notes e.g.
>
> http://www.onsemi.com/pub_link/Collateral/MC7800-D.PDF

What he says.
Note also that the LM317 is more flexible in this role due to it's
lower minimum Vout and the LM317 datasheets often contain sample
circuit.


             Russell

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