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Old 04-03-2012, 11:42 PM #1
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Default Input needed

Input needed-power-s-1.jpgHello all, please don't bash me to hard I'm new to the hobby in all the important aspects of lasers, but I have been an enthusiast for decades. My specialty is machining and have reached an age that I have time to pursue the interest. I jumped in head first and bought a 2.3 watt 445 from Survival lasers and was amazed since this was my first ever hand and eyes (through the 190-540 nm od4+ goggles) on. I have been reading a lot on the forum so I honestly hope I don't come across as a complete idiot. I just picked up this power supply for a song on ebay and my question is, 1st is it even capable of driving a laser diode, 2nd if so which one should I start with. All input is appreciated.


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Old 04-03-2012, 11:54 PM #2
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Default Re: Input needed

First off its good to know you have safety goggles
And about that driver, do you have the link where you bought it because that would help people figure it out
-Anthony
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Old 04-04-2012, 12:03 AM #3
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Default Re: Input needed

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices I don't know if this is what you need or if I'm doing it right sorry..
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Old 04-04-2012, 12:08 AM #4
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Default Re: Input needed

Quote:
Originally Posted by Old Newbe View Post
eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices I don't know if this is what you need or if I'm doing it right sorry..
yes thats what i needed to help you. Based on the sellers description it is a constant current driver with adjustable output voltage and adjustable output current.
If you plan on using this driver you will most certainly need a test load or dummy load to set the output current and for this driver the voltage too. After setting the driver to 5.5V - 6V and an output current of 1.7Amps - 1.8 Amps you could use this for your 2W+ 445nm laser

Hope i could help

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Last edited by AnthoT; 04-04-2012 at 12:10 AM.
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Old 04-04-2012, 12:09 AM #5
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Default Re: Input needed

Quote:
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eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices I don't know if this is what you need or if I'm doing it right sorry..
3amps will blow almost any diode so no that won't work
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Old 04-04-2012, 12:11 AM #6
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Default Re: Input needed

Can you suggest a diode to start with?
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Old 04-04-2012, 12:12 AM #7
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Default Re: Input needed

-Module Properties: Non-isolated step-down / Buck charge module;constant voltage module(CC CV) charging module
-Input VoltageC 7~35 V
-Output VoltageC 1.25~30 V ( adjustable, continuous output )
-Max output Current: 3A (if output power more than 15w,you can plug heat sink)
-Constant Range:0-3A (adjustable)
-Turn lamps current:CC value*(0.1),CC value will change with Turn lamp current.
-The minimum voltage difference: 2V
-Output Power:Natural cooling 15W, 25W with heat sink
-Convert Efficiency: Max 90% (higher Output voltage, higher efficiency)
-Output Ripple: 20M Bandwidth(Just reference ) input 12 V output 5 V 3 A 60 mV (MAX)
-Full Load temperature rise:45℃
-No-load Current: Typical 10mA
-Load Regulation: 1%
-Voltage Regulation rate: 0.5%
-Dynamic response speed: 5% 200uS
-Potentiometer adjustment direction: clockwise (increase), counterclockwise (decrease) ,Close to the input potentiometer is voltage regulation(CV), close to the output potentiometer is current regulation(CC)
-Indicator light:RED(charging);GREEN(finish charging)
-Output Short-circuit Protection: Yes, Constant current
-Input Reverse Protection: YES
-Output prevent reflux: YES, output have internally series against a prevent the diodes.
-Operating temperature: Industrial grade (-40 ℃ to +85 ℃) (ambient temperature exceeds 40 degrees, lower power use, or to enhance heat dissipation)
-Wiring way: welding, add pin can be weldinged directly in PCB
-Size: 49 x 23.4 x 11.4 mm ( L*W*H )not include potentiometer
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Old 04-04-2012, 12:18 AM #8
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Default Re: Input needed

yes well the diode is up to you. A M-140 diode set at 1.5 Amps with a G2 lens would work good with this but make sure you set the output current to 1.5 Amps not 3 Amps because the diodes are a little pricey to risk ruining.
DTR has M-140 diodes for 45$ and G2 lenses

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Old 04-04-2012, 01:46 AM #9
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Default Re: Input needed

Ok, since the driver is adjustable it will work. Are you planing on doing a lab build?
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Old 04-04-2012, 01:58 AM #10
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Default Re: Input needed

Yes, I thought that would be a good place to start. That way I can see the working parts.
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