Hi all,
I want to built laser diode driver with MOSFET. I built a driver which is attached. I need to drive laser diode up to 2A, and this current must be regulated by external voltage which varies between 0-5 volts.
I built attached circuit in real life. As pot value changes, output voltage varies between 0 to 5 volts, but when I connect multimeter in series to output pins, it measures 150 mA. I need this to be 2A. How could I make such that thing.
Thanks in advance.
Note: I used IRFZ44 MOSFET >> gives 250 mA when multimeter connected in series to output pins
IRF840 MOSFET >> gives 150 mA when multimeter connected in series to output pins
I want to built laser diode driver with MOSFET. I built a driver which is attached. I need to drive laser diode up to 2A, and this current must be regulated by external voltage which varies between 0-5 volts.
I built attached circuit in real life. As pot value changes, output voltage varies between 0 to 5 volts, but when I connect multimeter in series to output pins, it measures 150 mA. I need this to be 2A. How could I make such that thing.
Thanks in advance.
Note: I used IRFZ44 MOSFET >> gives 250 mA when multimeter connected in series to output pins
IRF840 MOSFET >> gives 150 mA when multimeter connected in series to output pins
Attachments
-
1.2 MB Views: 25