On Tue, 10 May 2005 09:24:08 -0700, "John Smith"
wrote:

Through a "magic" arrangement of components--I'd like to span QRP to QRO
power... mainly... while operation remains "automatic"...

Hi Brett,

Automagic, more likely.

What you would like to do does not answer the why. But I will skip
that because of the more interesting ramification (kind of the
original question):
"If the FET is to limit current such that it protects the LED(s);
AND the FET fails BUT the LED(s) keep shinin' on;
What is the FET for?"

73's
Richard Clark, KB7QHC