I think i'm looking for the perfect LogicLevel n-Channel mosfet for my project.
Now i'm controlling 12VDC locks that take about 1,7A to open from a 12VDC battery.
Unfortunatly if i use a IRFZ44N, not all the locks open every time i trigger the mosfet. (i trigger the mosfet with +5VDC for about 750ms)
If i connect the 12VDC battery directly to the Lock that wont open, the lock opens all the time.
Also when powering the 12VDC locks with my desk power supply 12VDC the locks open consistently when controlling with the mosfet.
By controlling the IRFZ44N with +5VDC from arduino Uno it theoretically should always open.
Is the battery just strong enough to open the lock and are the losses over the mosfet too mutch ?
What could be my problem, a too high Rds(on) ? Do i need better / realy logic level mosfet ?
Please advise me for a suitable TO-220 mosfet.