Hey guys, Im doing a project that i need to turn on a mini fan that has 5
You're looking to sink 140mA?IRL540 is good, 0.063 ohm on resistance at Vgs = 4V.https://www.digikey.com/product-detail/en/infineon-technologies/IRL540NPBF/IRL540NPBF-ND/812000TO220 package, easy to work with.
MOSFET works similar to NPN (2N2222).Arduino drives a voltage into the Gate thru 150 ohm resistor, (like R1),Source connects to Gnd,Drain connects to the 'bottom' of the motor.Rds of the MOSFET is very low, so the motor will see almost all of the battery voltage, vs the NPN wasting 0.7V across the Collector-emitter.
Larry,How did you do that ?("click on image for full resolution")Is that a new forum toolbutton ?
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