rangerssuck wrote:
On Apr 27, 12:45*pm, Don Foreman
wrote:

... Your half-amp
load presents resistance to flow such that when supplied with 12 VDC
it will draw about 1/2 amp even if the 12 volt source were capable of
supplying thousands of amps, *...

True, but as I said above, only if there is no fault in the device.
There are some devices that rely on the overcurrent protection in the
wall wart. If such a device was powered by an unlimited supply and
there was a fault in its circuitry that caused ot to draw lots more
current, there could be an exciting event - Ed might find it
amusing ;-)

I was kind of surprised to learn that the fuse in the equipment isn't
there for the purpose of protecting the equipment - it's there to
protect the supply and its wiring from when the equipment fails short.

Cheers!
Rich