J
Jan Nielsen
- Jan 1, 1970
- 0
Hi,
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.
/Jan
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.
/Jan