2012/1/27 Peter Blodow <p.blo...@dreki.de>: > Viesturs, > it seems to me that your laser diode is just acting as a "normal" LED, > not as a laser. This state is only achieved at a very distinct point up > on top of the voltage/current curve. The laser diode supply electronics > must take care of this which is a rather delicate controlling task. In > other words, the producer of that electronics thing is responsible for > keeping the correct working point. Mostly there isn't much to adjust on > them. Are you sure you are using the correct supply voltage as > specified? If this certain voltage is not reached, the diode will not be > brought up to the laser point, if it is too high, the diode could soon > release its magic smoke. >
Thanks, Peter! Well, it has a separate board with several capacitors, resistors and something with 3 legs, large heatsink and LM317T written on it. It is written that it requires 12VDC and consumes ~1A. I am providing the power from PC's PSU. Gene, thank You for explanation! I really appreciate Your help and detailed information, but all I understood from that - I can extract a hexfet from dead PC PSU. All the remaining stuff, including use of hexfet and driving it - it is beyond my knowledge of electronics. Laser _was_ burning wood, when attached directly (with less than 1 m long, 0,5mm^2 wire) to the driver board. It did not want to burn wood (but at least it was shining), when attached, where it belongs, on top of the Z plate. There is ~5m of very thin wire, going up there. Now I cannot get it to shine even when attached back directly to driver board. That crap is driving me nuts... But I also have untuned servo problem running in parallel to this, so it seems that I am stuck here for at least one more day. Viesturs ------------------------------------------------------------------------------ Try before you buy = See our experts in action! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-dev2 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
