Hey guys,
I am building a current source for driving a laser diode from 0-2A. Here is the circuit I am using currently:
The 1080kOhm is actually 80kOhm with a 1Meg potentiometer, used for varying current output.
My question is where should I put capacitors to increase its stability? Also would zener diodes across the laser diode protect it from current spikes? I have burned out a diode already and they are $50 bucks so any help on making this regulated is appreciated.
Thanks,
John
I am building a current source for driving a laser diode from 0-2A. Here is the circuit I am using currently:
The 1080kOhm is actually 80kOhm with a 1Meg potentiometer, used for varying current output.
My question is where should I put capacitors to increase its stability? Also would zener diodes across the laser diode protect it from current spikes? I have burned out a diode already and they are $50 bucks so any help on making this regulated is appreciated.
Thanks,
John