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



Laser Pointer Store

Making sure I don't kill my laser


Photonz

New member
Joined
Jun 20, 2013
Messages
539
Points
0
Depends on the host but you'll need two 3.7V li-ion batteries.
 

Eudaimonium

Well-known member
Joined
Feb 5, 2008
Messages
6,311
Points
83
Well, making sure it outputs the correct current is a good idea. Build a test load first to see if it's alright.

Just to avoid any headaches down the road.
 

IsaacT

New member
Joined
Aug 25, 2010
Messages
5,908
Points
0
Don't solder the negative input wire to the positive terminal like I did last week. Smelled like burned tea lol.
 

The Lightning Stalker

Well-known member
Joined
Aug 14, 2013
Messages
2,655
Points
63
Don't run it without a heatsink. Turn off power and short the output of the driver before connecting the
diode. Double and triple check polarities. Pay close attention to temperature.
 

laserhawk

New member
Joined
Apr 17, 2014
Messages
24
Points
0
ok, double checking v-/v+ is input and LD-/LD+ is output? I have a heatsink for the diode but not for the driver, what type of heatsink do I need for it?
 

The Lightning Stalker

Well-known member
Joined
Aug 14, 2013
Messages
2,655
Points
63
LD = Laser Diode

The X-drive doesn't need a heatsink at these currents if you're only running it for a short time. What
current are you running at?
 

IsaacT

New member
Joined
Aug 25, 2010
Messages
5,908
Points
0
I don't even use a heatsink when hitting 2.4A lol. Whoops
 

The Lightning Stalker

Well-known member
Joined
Aug 14, 2013
Messages
2,655
Points
63
The driver should be heatsinked if you plan on running it longer than 2 minutes. For testing it will be fine,
just keep a close watch on temperatures.
 

Eudaimonium

Well-known member
Joined
Feb 5, 2008
Messages
6,311
Points
83
Sure.

Just make sure your 1ohm resistor is a beefy one. Don't want to stink up your whole work room, burnt resistors smell really funny.
Anything rated for 2W will be fine.

1W will be fine for very short tests too. Just don't keep it on for longer than 5 seconds or so.
 

laserhawk

New member
Joined
Apr 17, 2014
Messages
24
Points
0
Thanks!:). my multimeter does not have a MV setting. can I just use the DCV setting?(sorry, I looked it up, couldn't find anything)
 

oahu99

New member
Joined
Feb 23, 2014
Messages
140
Points
0
Yeah that will do. Do you have an auto ranging meter?
Because if you do there only should be volts.
 




Top