Constant current power supply, will this work?
i found some parts in an old computer, since i could not get my hands on an lm317
This is what i used,
1 x L7805cv voltage regulator ( from an old computer)
2 x 660nm 3 watt each running at 2.2v 0.700mA
1 x 10ohm resistor connect to ground and output
1 x 12v 1.5a power supply
I can run 1 or 2 leds and they are pretty bright, only the L7805 gets hot but i assume thats normal.
What do you think of this setup, will it last?