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sony diode, SAFE mA

Mohrenberg

Mohrenberg

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when i first joined i was told to get a sony diode and a 250ma driver....but i was reading the data sheet for the sony 16x on stonetek's site and it says 170ma max......

is this the recommended max for it?

i'm more interested in having my diode live a long life than being able to push it as hard as i can for a short time before it dies.....
as long as it can light a match and etch on black plastic....i don't need it any higher than that.
 





artix

artix

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Mohrenberg said:
ok :) just wanted to make sure....i'll be going for my fifth attempt at making this pointer......most i had it running was for about a day and half (not constantly).....but it sure was fun....fifth times the charm!!
Click to expand...


Your persistence is amazing! Killing 4 diodes and not giving up! If I where to kill 4 diodes, I would just give up and make someone build it for me.

+1 for you! ;)
 
Mohrenberg

Mohrenberg

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well the lasers are cool, but i love tinkering with electronics.....and in the end once i get it i will feel like i accomplished something...

problem is...i'm a perfectionist, so i'll get the pointer working...and want to improve on it and end up breaking it in the process :)
 
Mohrenberg

Mohrenberg

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:) true...but i never have $100 to spend....i just buy a diode when i can....
i think i might try heruurscience $10 diode with 150ma rckstr driver....would that still burn?
 
artix

artix

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Mohrenberg said:
:) true...but i never have $100 to spend....i just buy a diode when i can....
i think i might try heruurscience $10 diode with 150ma rckstr driver....would that still burn?
Click to expand...

Yeah, a focused 100mW laser will burn. But according to this graph, you need at least 200mA to get 100mW.

(I am guessing this is a Rohm diode)
 
Mohrenberg

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thats weird.....it shows the rohm diode close to 150mw at close to 250ma........i tried hooking one of those (assumeing those are the ones heru sells for $10) up to my rckstr 250ma fixed driver and it killed it instantly when i turned it on (well, after about 1/10th of a second)

heh.....so i've actually killed 5 diodes......but 1 wasn't a sony.

i need to buy some more drivers.....i'm going to stick with fixed output though....for now.
 
artix

artix

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Mohrenberg said:
thats weird.....it shows the rohm diode close to 150mw at close to 250ma........i tried hooking one of those (assumeing those are the ones heru sells for $10) up to my rckstr 250ma fixed driver and it killed it instantly when i turned it on (well, after about 1/10th of a second)

heh.....so i've actually killed 5 diodes......but 1 wasn't a sony.

i need to buy some more drivers.....i'm going to stick with fixed output though....for now.
Click to expand...

Did you see how the line stops at 150mW? It is because that is when they die! If you give the diode less than 200mA it will live! ;D
 
Mohrenberg

Mohrenberg

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lol........but then it wouldn't burn would it? under 200ma would be under 100mw
 
artix

artix

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Mohrenberg said:
lol........but then it wouldn't burn would it? under 200ma would be under 100mw
Click to expand...

It will still burn even if it is 50mW! My friend has a 55mW "extreme" laser and when focused to a tiny spot, it could light matches, melt plastic and pop balloons. Almost any laser will burn, but the power contributes to how fast it can burn! [smiley=evil.gif]
 
Mohrenberg

Mohrenberg

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was looking at the graph and i should still be able to get 100mw off of 150ma with the sony diode, so i think i will remove the 12R4 resister from my fixed 250ma rckstr driver, which should make it 150ma....."i think"

atleast i hope anyways....
 
ndrew2505

ndrew2505

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replace the resistor and test the output of the driver. did you ever get a digital multimeter? the yellow 1 i got was bought at radioshack for 20$. it would be a great help to you if you got 1.
 
lasersbee

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Yeah... you're playing in the dark if you don't get a usable meter... and you'll
end up bowing yet another LD   :'(
But keep trying... you'll get there. ;)
 
Mohrenberg

Mohrenberg

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yup thats a definite buy with my next paycheck :), so i'll have one to test it before i ever put the diode on it.
those are on my shopping lists....new meter, 2 new drivers, 1 ohm diode and a 22x long open can.

and i want to change the driver i already have to 150ma for my sony that should be coming
 
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