O-Like New 1W 445nm diode / 200mW 405nm laser diode driver.!

[ped]

Just while i have it, here is a size comparison pic, showing the "other side" of the driver that you can see in any other pictures.

 

[lazeerer]

Thank for the Comparison. WoW its pretty big. It looks like double the size of the FlexDrvie.

 

[ped]

Yeah its a hefty driver, but it feels good quality, i'm going to hook up a test with my rare A150 diode on sunday to see how it performs.

 

[Last One Left]

Thanks for the pictures..i guess it is kinda big, but at the same time, flexdrive is VERY small lol..

 

[ped]

Ok the data is in.

Hooked up to a freshly charged 2800mAh Sanyo 18650

Batt = 4.21v (4.10 under load)

Current draw from battery = 1.1A

Driver vOUT = 4.32v

Driver I out = 740mA

p OUT new A150 diode = 693mW

O-Like say it should be 1.1w , as you can see its well below. Dissapointing.

 

[elite ares]

Ok the data is in. O-Like say it should be 1.1w, as you can see its well below. Dissapointing.

Agreed.

 

[LarryDFW]

Ped;

The driver is not delivering enough current. It needs some tweaking.

In your photo in post #17, you show a 1R0 resistor. That is most likely setting the voltage or current.

Try a parallel 4.7 ohm resistor across it. That should increase the current to the diode.

Thanks for taking the photos of both sides.

LarryDFW

 

[ped]

Noted. I'll give that a go.

 

[laserlighter]

any news on this driver?
because its nearly the same driver used in the waterproof 1W blue lasers with 18650 battery.

I have one of this laser myself and want to tweak the power a little bit.

 

[ped]

well, yes and no.

It may be that my diode was screwed , ive ordered more off DTR which will be here shortly and i'll repeat the tests.

 

[laserlighter]

I opend the rayfoss 445 1W.
below you see the board.

I changed the 1Ohm resistor for 0.5Ohm and got a current draw of 1,75A instead of 1,15A.

Didn't measure the diode current because i don't want to unsolder the pressed in diode.

 

[lazeerer]

I opend the rayfoss 445 1W.
below you see the board.

http://img193.imageshack.us/img193/963/driverback.jpg

http://img560.imageshack.us/img560/8029/driverfront.jpg

I changed the 1Ohm resistor for 0.5Ohm and got a current draw of 1,75A instead of 1,15A.

Didn't measure the diode current because i don't want to unsolder the pressed in diode.

Are you sure the Driver can handle this.?

Thats Pretty Sweet if it can.

 

[laserlighter]

No I'm not sure.
Its just a good value for the diode, should be about 1.1A.

If it will last i don't know. I make a 5-10min runtime test and if the driver dies I replace it with a new one.


EDIT:
Made a 2min run. Current raised up to 2.3A (battery is not the best). Host got a little bit warm (with 1,2A no warming in 2min).
I think further testing is required.

 

[laserlighter]

my new o-like driver board arrived today.

did some testing:

input:
4,0v 1,59A = 6,36W

output:
997mA 4,11V = 4,10W

efficiency
=64,4%

Hmm, not as efficient as i expected but the current is good!!
didn't change any resitors.

I will get a flexdrive soon to compare... (or are there already efficiency measurements in this forum?)

 

[rhd]

Interesting - the following looks to me like the Rayfoss 1,150 mA boost driver:
New 445nm 500mw or 1W Blue Laser Diode Driver 3.7-5.0V on eBay.ca (item 250770519901 end time 10-Mar-11 07:34:54 EST)

 

[Fivos]

Yes but won't that combination of wrong current and voltage damage your 445nm laser diode??? at 997ma it should be at 4.5 volts not at 4.1...