I was told on another forum, that the way to switch "large" currents is a MOSFET since a regular transistor cant, atleast not from a mcu output.
Now I have a few of these IRF530 MOSFETs, and are trying to get them working.
I connect ground/common to one of the outer legs, a led (cathode) to the other outer leg. The anode of the led to VDC+ (4V) Then I connect the base to a 1K resistor and then to common/ground.
So in my understanding, when I apply power the led should be off, well its not, no matter where I connect the base with 1K resistor, the led is always on.
I tried searching google for some guides, and found some, but I cant get their exsamples to work, the led is either always on or off, no matter what the gate/middle led is.