I do believe Rachel is saying each of the four diodes is being ran from 3xlm317's for a total of TWELVE LM317's.
Essentially 4 separate laser/driver combos being ran from one input power source.
Code:(+) [battery] (-) | | > 3xLM317&LD < | | > 3xLM317&LD < | | > 3xLM317&LD < | | > 3xLM317&LD <
Is that about right?
(Too lazy to make a proper diagram of what I believe is being done by the OP Rachel.)
Hi brad
Yes that is correct I have a picture I can upload if needed but yes you know what I've done