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Topic: Current usage break down (Read 785 times) previous topic - next topic

deSilva

Aug 31, 2010, 06:22 pm Last Edit: Aug 31, 2010, 06:29 pm by mpeuser Reason: 1
I just checked my new Mega board ( *fanfare* )
It draws 59mA which seemed high to me, so I turned to the "2009" boards and did some measurements what I should have done months ago already.

3.5 mA (Power LED)
5 mA (Controller in reset (seems high to me, but note that already the 10k sucks 0.5 mA!))
9 mA (in addition to the 5mA when controller is running)
5 mA (FTDI chip without USB connected)
8 mA (in addition when USB connected)
0.5 mA (sucked by 5V regulator)
--------
31 mA altogether

I have also some more primitive boards with MAX232 and 7805 regulatator. It is much worse there, the 7805 alone sucks 7 mA!


sxdemon

#1
Sep 01, 2010, 12:06 am Last Edit: Sep 01, 2010, 12:08 am by kraig Reason: 1
We sure could improve power consumption  ;)

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