Hello every one i have just gone to RS components to buy a N-channel MOSFET to control the speed of a superbike radiator fan which runs at 12v, here is the link to the MOSFET:mosfet specs pdf link i did some research before buying it has a very low gate threshold and very low resistance which i hope it correct here another link to the page where i bought it from http://uk.rs-online.com/web/p/mosfet-transistors/4857721/
Anyway i have such a very basic knowledge of electronics and i can not get the mosfet to work with the arduino to power the motor, it runs fine just of the battery. and if i wire it to the MOSFET then jump the gate pin to straight to the battery positive the motor spins but the MOSFET get very hot and starts to smoke, i am using a large 12v deep cycle car battery to power the fan, the positive is going straight to the positive of the superbike fan and the negative is going into the MOSFET then to battery ground and the gate is going to pin 9 of the Arduino, i followed a Youtube video https://www.youtube.com/watch?v=Lzxuro0Z2Ew&t=65s for the design and method i.e. a battery and fan with a MOSFET.
What have i done wrong ? is the MOSFET itself wrong for the arduino or am i picking the wrong pins on the MOSFET, On the MOSFET Internal schematic diagram i assume pin(G) 1 is the gate, pin 2 D (TAB) is ground and pin 3 S, is the source - input ? or is the fan just to powerful for the MOSFET. the fan is supplied power on the bike with a thin 3mm wide cable so i assume it does not pull that much load ? i dont want to kill my arduino as i have very little money.
Many thanks from kawa
EDIT found the fan specs: Kawasaki Zx10r D6F D7F Cooling Fan. Voltage: 12 volts Amperage Draw: 2.4 amps