- Feb 4, 2010
Thanks for sharing this precious information ! :beer:
I agree. Knowing how long the diode can survive at 1W would be more helpful.This is reckless, if you will increase current each day we won't be able to know at what point it dies, by testing diode you must stay at the same current level, it won't give any data AT ALL if it dies, there is no point in such action, it's just 24 hours which is nothing, diodes are meant to last at least 10 000 hours, so for example if it dies on 1.5A after 24 hours we will only know that it will be running for 24 hours at that current level and then die.
I suggest to run it at 1W output current, let's say it's 1A, so full test for a month (running 24/7/30) it will be 5040hours online, if it's survive, you will provide unbelievable usefull informations.
But since it's your diode, it's your call, I would like to do the same if I will get more diodes.
Because they are run pulsed in the projector and we are running them with a constant power supply.Doesnt the thing run at around or over 1amp in the projector? why would it live a shorter life at the same power taken out of the projector and given better cooling? :thinking:
woud this be why the sanwu lasers have a kind of "soft start" to them?(like it takes a good second to power up fully) and sorry if i bump and old thread, im finding random threads i likeTry keeping the current the same, but cycle the power on/off with 20 seconds on and 20 seconds off and see if it'll pass this kind of test for 24-48 hours.
It's not difficult to make a simple timer circuit to cycle the power.
This would be a much more real life type test as most people will use them as pointers and be turning them on and off hundreds of times. It's also a good test to help determine actual lifetime as most of the stress is put on the diode with the initial inrush of current when turned on.
LOL, i was just sitting here realizing the same thing. 7 years old..... way to gravedig (not you, but me) xD but i had an honest question!Are you freaking kidding me!!? Damn it I didn't realize this was an old thread!!! I'm not mad at you Ushan
I'm mad at myself for not realizing it was 7 years old!!