connecting case 12V fan to to Mobo or, LED driver 12vdc auxiliary output
Newbie questions
Trying to understand basics of how rated current for fan is not exceeded when powereing from a Mobo, or an
auxiliaary 12vdc power supply output
!. Mobo. I am going to use 2 Noctua A14Flx fans - 12vdc, 80Ma each (160Ma total)
Q - how can the Mobo's current be limited to that specifically needed by fan?
Example, One Noctua fan, needing 80Ma. I plug in the molex and everything works.
If I have 2 fans connected via Noctua's Y-splitter needing 160Ma I can plug the connector from the
Y-splitter into the Mobo and everything works OK.
How is the current from the Mobo being regulated to match that needed in both situations requiring
differnt max currents?
2. LED driver auxiliary 12vdc output. Since the rated current exceeds 350Ma, how can I control, downregulate the current to 160Ma and safely power both Flx fans. I read about using a potentiator control but I understad that the potentialtor only modulates voltage. Do I use a resistor.
Thanks