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FrozenGate by Avery

574nm 36 mW Yellow Laser

Since I got new drivers in for mine, I have increased the pump current significantly by 250 mA at 12 volts at the input. I used a larger heat sink on the driver output transistor, but the same heat sink on the driver IC as there wasn't room for a larger heat sink there. I am going to add a fan for the driver as pushing air across the heat sinks will be better than allowing them to radiate into the stagnant air. I also have a spare driver now, too.
 





paul1598419 said:
Since I got new drivers in for mine, I have increased the pump current significantly by 250 mA at 12 volts at the input. I used a larger heat sink on the driver output transistor, but the same heat sink on the driver IC as there wasn't room for a larger heat sink there. I am going to add a fan for the driver as pushing air across the heat sinks will be better than allowing them to radiate into the stagnant air. I also have a spare driver now, too.
Click to expand...

Nice mods Paul keep it up.

One question: I looked at your first pic in the op post, why are the alligator clips attached black to red and red to black?
 
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Ultracrepidarian said:
Nice mods Paul keep it up.

One question: I looked at your first pic in the op post, why are the alligator clips attached black to red and red to black?
Click to expand...

:crackup: You noticed that? It was because I was using a plug from a RGB laser and the polarity was reversed on it with respect to these drivers.
 
paul1598419 said:
:crackup: You noticed that? It was because I was using a plug from a RGB laser and the polarity was reversed on it with respect to these drivers.
Click to expand...

Haha, I just received mine literally 2 mins ago and I need help with powering it up. What is the yellow wire connector for? The red wire connector goes to the white female connector right? Should I just clip it and solder it to my battery pack?

Also this module is much smaller than I thought. :O

NVM I got it to work by just plugging in the wires from the battery pack into the wire connector and it works, sadly I ordered 575nm but received the 565nm module, it says its 565nm and the dot is a bit greenish.
Although I'm not completely disappointed since I never seen this wavelength before.

Edit #3: I don't know anymore, it says its 565nm but now I don't see any hint of green after it works for a little bit.
 
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If you saw green in it, it is likely what they say it is. The 565nm one. If it is using this same driver board, you WILL need to heat sink the output transistor and the driver IC next to it. I use Arctic Alumina thermal adhesive which works best. When you heat sink the IC, make sure you keep the heat sink away from the large electrolytic cap behind it. Otherwise, it will make the cap run far too hot. I made that mistake on my first driver and had to get another driver because the adhesive is permanent.
 
paul1598419 said:
If you saw green in it, it is likely what they say it is. The 565nm one. If it is using this same driver board, you WILL need to heat sink the output transistor and the driver IC next to it. I use Arctic Alumina thermal adhesive which works best. When you heat sink the IC, make sure you keep the heat sink away from the large electrolytic cap behind it. Otherwise, it will make the cap run far too hot. I made that mistake on my first driver and had to get another driver because the adhesive is permanent.
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Okay thanks, can you link me the heat sinks? I don't remember where you put the link for them. What should be the duty cycle without heat sinks?
 
It's hard to say as I don't have a 565nm one. My head seems to run cool, but my driver runs quite hot. It always ran hot, even before I increased the power on it. If I had to guess, I'd say don't run it longer than 2 minutes until you get the heat sinks installed. I'll have to look for the link to the heat sinks as I don't have that information handy. I still need to measure my output power since increasing the pump diode current. It was 36 mW before this new increase. I'll post the heat sink links here as soon as I find them.


Here is the link for the heat sinks. They are $1.64 for 30 pieces in two sizes. I used the large one for the transistor and the small one for the IC. www.ebay.com/itm/173038785350.
 
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If you see green in it, I'm willing to bet it's 565. I'd say 565 is 55:45 yellow : green ratio.

This is a pretty accurate comparison between the two I have, at least on my monitors. Still trying to come up with a consistent way to edit them to show the right colors, doing it on dark backgrounds makes for fairly easy work.
 
Didn't you say it was described as the 565nm laser when you received it? If so, I would believe it. The only way to be absolutely sure is to measure the wavelength. That is what I did when mine arrived. Not exactly 575nm, but close enough.
 
I'm gonna agree with Paul. The 565 is still a very yellow color. Just compared to 575 it's greener.

Give it a go after looking at red for a bit. If it's still yellow, perhaps it is 575. If it's arguably green you're venturing into 565 territory.

Just my $.02





Also finally have a second image... presentable... The 589 still doesn't look right to me. Spent hours on this. I need to get photoshop...

 
ZRaffleticket said:
I'm gonna agree with Paul. The 565 is still a very yellow color. Just compared to 575 it's greener.

Give it a go after looking at red for a bit. If it's still yellow, perhaps it is 575. If it's arguably green you're venturing into 565 territory.

Just my $.02





Also finally have a second image... presentable... The 589 still doesn't look right to me. Spent hours on this. I need to get photoshop...

Click to expand...

Great picture Z! :beer:

-Alex
 
Still a very nice looking beam shot, Zach. I see your 589nm looks a little too red, but not that bad. + Rep.


I have been experimenting with air flowing over the heat sinks on my driver for my 574nm laser. If I don't use a fan the driver IC heat sink gets very hot to touch, but with just a mild air flow over the heat sinks neither one gets hot, or rather, the heat is removed to the air as it flows over the fins of each heat sink. This is good news for me as I can use this laser at increased current without fear of losing my driver to thermal runaway. :D
 
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I confirmed mine is 565nm, all this time I thought I bought the 575nm, but the link where I got it from confirms 565nm, and I can see a faint tint of green in it.
Its a really nice color and very tight beam.
 
I bought three of these modules from the China seller and two were 575, one was 565, but all three were marked 575 and were supposed to be that.
 
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