Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser Pointer Store

5.6V on a 445 Laserdiode ?

Joined
Oct 8, 2015
Messages
56
Likes
6
Points
8
hi,

i have bought a china laser engraving module.
It is a 300mW Module.

on the laserdiode connection i measure 5.6V

i wonder ... is it too high for a good lifetime ??

greetings
 

Eracoy

Active member
LPF Site Supporter
Joined
Jul 21, 2014
Messages
166
Likes
115
Points
43
Do you know if the module includes a current regulating driver? Do you have a picture of the module, or a link to it somewhere? This could help us identify its power requirements.
 
Joined
Jul 23, 2008
Messages
1,120
Likes
74
Points
0
a 3 watt 9mm will give out like ~ 2 watt at 5.6 if it's set to use a 6 to 9 volt driver

5.6volts is a odd number post a pic
 
Last edited:
Joined
May 1, 2011
Messages
1,063
Likes
107
Points
0
There's a 250mw laser diode on dtrs site. This picture shows the power output with 5.64v


Of course every diode is different to a certain degree so yours may be putting out more or less than 100mw
But yes we need to see where you're measuring and what you have so we can help you better.
 

paul1598419

Well-known member
Joined
Sep 20, 2013
Messages
13,206
Likes
1,727
Points
113
As the diode heats, the forward voltage drop will change ( decrease). The current through the diode is more important than the forward voltage drop.
 
Joined
Oct 8, 2015
Messages
56
Likes
6
Points
8
hi,

it is this laser module 221929851558

and the power regulator like this 291594513358, but the resistor R1 is modified (poti)

greetings
 




Top