**HELP** How to know which driver is mine?

[Roger Andrade]

Hello guys!

Since 2015 I have a Sci-fi laser 1 - 1.8W 445nm (not sure the power) and my drive burned completely .. does it affects the diode? The diode light is very light when I turn on conecting directly.

How can I know if my diode is still good?

Also, the main question: How can I know which driver is this and which better to replace this one?
I'm currently using 2x CR123A 3.7v

The host is a SF501B.


I attached some pics. And what is written on it.

YCX-041
SK 24A (GD5)

Thank you so much!

 

[Unpairedelectron01]

If you connected the diode to a power source without a driver or current limiting device, it is probably dead.

 

[Roger Andrade]

If you connected the diode to a power source without a driver or current limiting device, it is probably dead.

Thanks, i connected through the driver, then I could see the low light.

 

[gazer101]

Hello guys!

Since 2015 I have a Sci-fi laser 1 - 1.8W 445nm (not sure the power) and my drive burned completely .. does it affects the diode? The diode light is very light when I turn on conecting directly.

How can I know if my diode is still good?

Also, the main question: How can I know which driver is this and which better to replace this one?
I'm currently using 2x CR123A 3.7v

The host is a SF501B.


I attached some pics. And what is written on it.

YCX-041
SK 24A (GD5)

Thank you so much!

Just see the driver's diameter, input/output voltage, and output current (very important). From visual inspection it looks like this: https://www.survivallaser.com/Survival_Laser_Fixed_Current_Driver/p556088_7425633.aspx

 

[Unown (WILD)]

Do you know how to test the drivers output? You need to start testing things to make sure they work or send it to someone who can

 

[thanhtung]

Pls read the value of Resistor 1206 in your driver! I can tell with you how many current in your laser , and from 2015 i think problem at your diode

 

[Deleted member 57455]

Pls read the value of Resistor 1206 in your driver! I can tell with you how many current in your laser , and from 2015 i think problem at your diode

That is most likely not the sense resistor. The sense is r1, Right next to diode - and going to the ground plane as far as I can see. Can't see if it's connected to feedback but most definitely the little 1206 resistor is not the current sense one for a few reasons. Its too small for a shunt (aka doesn't have the ability to dissipate much power) and is way far away from the diode -.