When i have one fan connected the pins stay at 12v, when i have two its around 9V, when theres3 its at about 7.5V the strage thing is that the voltag seems to be slowly climbing up. for example when i have 2 fans the voltage starts at 9V but in about 15seconds its at 10V.
Why is this happening? Do i need another kind of mosfet for this?