dim beam

laserhacker · May 10, 2008

i changed the case i had the driver in. and when i turn my laser on. it is now dim. i see that i am putting out 350ma and 3 v. i checked it with my meter is the diode blown. only used it for 5 mins and with the driver. 45 sec on 30sec off

styropyro · May 11, 2008

What type of laser diode are you using?

You could have killed it by the heat of soldering.

nikokapo · May 11, 2008

seems to me you've killed it,
if you lower the voltage does it get dimmer?
it doesnt matter if you've only used it for 40 secs as even a fraction of a second could kill it

(hope you DIDNT!!)

chido · May 11, 2008

laserhacker said:
i changed the case i had the driver in. and when i turn my laser on. it is now dim. i see that i am putting out 350ma and 3 v. i checked it with my meter is the diode blown. only used it for 5 mins and with the driver. 45 sec on 30sec off

Did you heatsink the module the diode was in? You say you used it for 5 min, was that in the case you had it before or in the case you just placed everything in? If it was in the other case, then did you disconnect the diode from the driver? Did you short out the capacitor before connecting it back????

laserhacker · May 11, 2008

all i did was take the driver out of the old case i has it in and place it in a new one. i did not change anything only the driver case. i did not change the module . i left it in the heat sink.

chido · May 11, 2008

Yes, but did you disconnect the diode from the driver?

laserhacker · May 12, 2008

well i check the driver again and i know it is not that.i hooked up the other diode from the dvd burner to check it. so i guess i blow the diode. and well i seen it work for a few min. i am not going to order a new diode. let try again.

laserhacker · May 13, 2008

i am going to be using the same diode. can i use the blown one for a load test. will that be good to set up a max MA. the the lm317 chip is ok with 6 aa batterys right?

chido · May 13, 2008

Yes you can use a dead diode for a dummy load, but I recommend you set the current with the diode you're going to use, use the dead diode to test the driver, not to set the current for the other diode. 6 AAs will be ok.

pwnstar · May 14, 2008

if you did dissconect the driver at all, then you could have blown the diode by the capacitor discharging on it.

dim beam

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styropyro

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