I just bought a 808nm laser diode bar from Coherent. Looks like this diode bar has a lasing threshold of 9amps and max of 20amps.
I have been searching the net for a DIY driver circuit to test this diode out, but am unable to find it.
I think i can quickly rig up a test circuit with a 3.7v Li-Po battery and a 0.16ohm/20watt resistor to get about 11amps.
But i am looking for a circuit where i can vary the current (current regulator).
One common one i have been coming across is the op-amp/mosfet based current mirror, but I am still trying to learn its circuit theory.
if anyone has a high current regulator circuit than they can share, that would be great!!
I have been searching the net for a DIY driver circuit to test this diode out, but am unable to find it.
I think i can quickly rig up a test circuit with a 3.7v Li-Po battery and a 0.16ohm/20watt resistor to get about 11amps.
But i am looking for a circuit where i can vary the current (current regulator).
One common one i have been coming across is the op-amp/mosfet based current mirror, but I am still trying to learn its circuit theory.
if anyone has a high current regulator circuit than they can share, that would be great!!