If I want to have something that runs off three AA batteries

>>963606
Yes.

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>>963611
Well so it is. Thx!

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9KB, 135x180px

Not sure whether to be proud or scared of the future

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>>963615

>>963614
Inb4 he fries his usb port from the power draw.

>>963621
Shit just looks like leds to me

>>963606
Yes. Unless your device draws a significant amount of power (compared to AA battery ratings) and it has been designed to depend on the internal battery impedance.

>>963648
How can one measure the power something draws?

>>963655
watt meter, preferably a high amp meter. only do for short time though

>>963655
>measure the power

If you are in the AA battery range, just use the ammeter/milliammeter function on your DMM. Put in series with the batteries and load and read the current. For DC, P = V*I

>>964729
> For DC, P = V*I
This is also true for AC ...

unless you're talking about 3phase motors or something

>>965199
>This is also true for AC

Pac = V*I*power_factor

>>965291

Like I said, unless you're talking about big 3phase motors, like in this case small residential appliances cosphi is negligeble

>>965885
>>963657
>>963621
>>963620
>>963615
Here's your hard earned (you)