>With a very slight modification to this design you can use the original WG
>PNP pass transistor to boost the current on the positive rail, and the NPN
>transistor for the negative rail (the opposite of the way WG currently uses
>them). Assuming only a current gain of 10, for the power transistors, this
>allows the regulators to only dissapate 500ma for 5 amps of current.
>
>I don't have the schematic here, (it's hand drawn) but I can scan it in this
>weekend and send to to Al to post.
Mmmmm. Good point, I'd like to see your modifications there.
One other approach would be to get the regulators in a TO-3 package and
mount them on the chassis instead of the NPN/PNP pair for the old LV
supply. I think the TO-3 versions are rated for something like 7A
continuous?
-Clay
Clayton N. Cowgill Engineering Manager
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