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FrozenGate by Avery

574nm 36 mW Yellow Laser

andrewProgrammer said:
What kind of power supply will I need to run one of these? Just a couple 6V batteries or do I need a variable power supply? What kind of power supply are you guys all using for these?

What a time to be alive. 490nm diodes and 575nm DPSS all in this short amount of time. Haven't been active here in a while, but this is getting me back into it.
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12V at an appropriate current. Think Paul mentioned 0.5A or something earlier in the thread.

Lower voltage should work (to a certain extent), think Cyparagon mentioned that earlier in the thread.
 
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IIRC Paul stated 0.5A+. I would of thought a simple 12v 1a adaptor would be more than sufficient.
 
paul1598419 said:
Mine has run continuously for 10 minutes at +12 volts in at 550 mA. I'm sure it could run longer, though. I tried to adjust the voltage down on mine and the fan starts decreasing in speed immediately. The output I didn't measure, but could see a definite decrease in output power at 9 volts. I haven't yet tried to figure out how this driver is setup, but there are 5 rectifiers at the input to the driver, so they could be used to decrease the voltage into the driver's output transistor. Just some things to think about if you are planning on modifying the driver to use a lower input voltage...
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A bunch of us should have ours within a week maybe. And then we should get more information from testing them.
 
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I have since made a plug to use a 12 volt 1 amp wall wart with it. That works fine too. If you are going to use these drivers, you will have to do more than just decrease the input voltage. The fan on the head seems to keep the temperature of the pump diode from running hot. If you take that away all bets are off.
 
paul1598419 said:
I have since made a plug to use a 12 volt 1 amp wall wart with it. That works fine too. If you are going to use these drivers, you will have to do more than just decrease the input voltage. The fan on the head seems to keep the temperature of the pump diode from running hot. If you take that away all bets are off.
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Maybe if you used a 5V fan with a voltage regulator one could use a different driver too. What size are the fans?
 
Mattronium said:
Maybe if you used a 5V fan with a voltage regulator one could use a different driver too. What size are the fans?
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You could use a different driver, and run it all on 5V just fine. Diode voltage is low enough that you'd have no problem running a buck driver with 5V in.
 
I checked the fan voltage and mine was sitting at 10.5 volts at the time I tested it. I don't know if this voltage can change over time, though. The Vf on my diode is 1.53 volts at start up.
 
On May 29th they said they will ship my yellow laser "this week", 8 days have passed and they still haven't shipped it and when I ask them when will they ship they don't reply but I see that they read my message, this is starting to concern me.
 
I received the one I ordered from the Aussie ebay seller just a few minutes ago, the circuit board is glued down to the plastic case, but here's the top side. I am not sure how to hook up plus and minus though. I supposed yellow and black are TTL, the red connector for DC supply?

https://ibb.co/eJE7co
 
Alaskan said:
I received the one I ordered from the Aussie ebay seller just a few minutes ago, the circuit board is glued down to the plastic case, but here's the top side. I am not sure how to hook up plus and minus though. I supposed yellow and black are TTL, the red connector for DC supply?

https://ibb.co/eJE7co
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These drivers are designed for A.C. supply. It does not matter which way you connect the 12 volts D.C.


But just as a standard I made Black negative. A heatsink is recomended on the drivers though.
 
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There were two remaining when I bought this one, it's measured at 35 mw output. Will be powering it up later today, thanks :)
 
Alaskan said:
Thanks, the yellow and black are for AC in?
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Usualy anything like this designed for A.C. will work fine on D.C.

Their will be some voltage drop on the diodes though. So 12 VDC ends up about 10.8 VDC after the diodes.


Most of the Laser Light Shows that come from China use A.C. drivers like these ones.
 
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