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

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Driver operating voltages

Joined
Dec 15, 2012
Messages
25
Points
0
Hello!
I'm very new with lasers so please help out :yh:

For my first "project", I decided to buy a green laser module (this)
and replace the existing module with it. Then I noticed that the existing module runs on a 16340 3.7v battery.
The module I ordered claims to run at 3.0v.
Will the laser be O.K operating at 3.7?
 





Blord

0
Joined
Dec 24, 2007
Messages
5,356
Points
0
It depends on the driver. We can't say it will work 100%.
Some drivers work fine with either 3 or 3.7Volt and others will blow up at 3.7V
The specs says 3.0V and I woun't go beyond that.
There are 16340 cells that have 3.0V. They have a protective pcb that regulate the voltage. Maybe you should buy these cells.
 
Joined
Dec 15, 2012
Messages
25
Points
0
Thanks for the reply .
Does anyone know how to test it....without blowing the driver or diode?
 

luccax

0
Joined
Sep 6, 2010
Messages
202
Points
0
Maybe if you post some info about the driver (wich IC it uses, photos, a webpage) someone will be able to determine that.
 
Joined
Dec 15, 2012
Messages
25
Points
0
Ah...I contacted the seller and he/she said that 3.0 v only...Thanks for the help anyways! :yh:
 

luccax

0
Joined
Sep 6, 2010
Messages
202
Points
0
Yes, sorry. I have one of those, don't go over 3V, heats up veeeeery quickly
 
Last edited:

luccax

0
Joined
Sep 6, 2010
Messages
202
Points
0
why not 3V? You might not get full power at 2,6
 
Last edited:
Joined
Dec 15, 2012
Messages
25
Points
0
You're right..I should increase it..
I am going to use a 3.9V battery and a diode to reduce it to 3.2V.
Would that be okay?
 
Joined
Sep 12, 2007
Messages
9,399
Points
113
why not 3V? You might not get full power at 2,6
The diode is something like 1.9V, remember, and they use a very low dropout regulator. I've got a green pen that stays in regulation down to 2.3V.

Many people seem to forget that a cell's voltage is not absolute. Alkalines start at 1.6V and are empty at ~0.8V. NiMH starts at 1.4V and is empty at ~1.1V. Li-Ion starts at 4.2V and is empty at ~2.8V.

Unless your driver can accept all the voltages of the cell's charge state, you're wasting a lot of capacity.
 




Top