Question

I have a PC Fan that required 12V (12mA) to run and so I connected it to buck-boost which gives what I need. When I check the current without fan, it shows 120mA on multimeter but with fan it shows 30mA. Why and how does this happen? Is it normal?

Answer 1

Answer:

I am trying to measure the current of a DC computer cooling fan (Intel E18764-001) at various voltages. Its rated specs are: 12V 0.20A. Check it out here.

So I am suspecting that this is telling me: "give it 12V and you should get 200mA of current" - Am I right?

Anyway, I supplied the fan with various voltages using my power supply starting from 5V all the way to 12V. I measured the current with a multimeter connected in series. Here are the results:

@5V --> 50mA (0.05A)

@6V --> 30mA

@7V --> 30mA

@8V --> 30mA

@9V --> 40mA

@10V --> 40mA

@11V --> 50mA

@12V --> 53mA