> I have to power a network Hub that requires 5v DC at 1A, with up to 2-3A
> peak currents. I was wondering, is there some way to parallel 7805
> regulators to fit this task?

Do not parallel them directly.  Each regulator has its own idea of what 5V
is, so they will not share the current evenly.  If your circuit can
tolerate a few 100mV droop at peak current, then you can put a small
resistor on the output of each regulator.  200mohm should be enough to
balance the load reasonalby well.

A better answer is to build one 3A regulator, or better yet, use a
switching regulator.


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