Quote Originally Posted by BillTodd View Post
Just put a silicon diode (e.g. 1N4001) in series with the laser supply, it will drop a fairly consistant 0.7v. Use two, if you want to be on the safe side.
Bill,

You have no idea how much I envy you and the others knowledge of electronics. I'm afraid I have a "nuts and bolts" brain and electrickery will always remain a dark art.

Thanks very much for the help guys, I'm off to find an 1N4001 and wire it in series.

Jeff.