Hi all,im building a 2 watt laser engraver for my cnc mill,its a 450nm laser diode,max voltage is 4.8v and it needs 1400ma ,im planing on using one 317 as a voltage regulator feeding a 2nd 317 as a current regulator,any reason why it shouldnt work,also as the 317 ref voltage is 1.25v i assume the first 317 will have to output 6.25v to the 2nd 317,im i right in thinking that?,also it can handle 1800ma puled,i againe assume it means pwn the power to it,if so any idea what frequency it should be,the diode is a nichia m-140,thanks in advance Paul m3-vuv.