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

Regulating current between driver and diode

Joined
Jul 3, 2010
Messages
190
Points
0
Hi everyone!

I was wondering if it would be possible to regulate the amperage between the driver circuit and the diode. I was thinking of using a 100 ohm potentiometer between a microboost @ 1A and an A140 445nm laser diode. This setup would be used in a white fusion kit, to attain the perfect colour balance. ( I would also use this setup for the red). Would it drop the voltage as well as the current?

Thanks for any replies

AAlasers
 





Joined
Oct 11, 2008
Messages
134
Points
0
SEARCH button :(


this is a cumbersome and unnecessary step. If you researched a bit more before posting something silly you would know.

Anyway, the driver is what you will be using to find the "perfect balance"
as in a white fusion setup it would be far simpler to just opt for a driver which has a potentiometer.
Try a Microboost or flexdrive V5 even a Rckstr driver they all have small SMD pots to adjust current output. That is the purpose of a driver amongst providing stability for the diode.
hope this helped but still you should increase your understanding before you attempt a white fusion build
 
Joined
Jan 11, 2008
Messages
671
Points
0
^ Yes that's true, but both the flexdrive and the microboost have very small pots like you said. The flexdrive's pot is so fragile, it won't last more than 20 adjustments. A larger external pot would allow you to more easily adjust the current (if a pot in series with the LD actually limited the current).
 
Joined
Jul 3, 2010
Messages
190
Points
0
Thanks for your replies,
I was thinking that you couldn't adjust the current too often and since the pot is so small on the Microboost or flexdrive, It would be difficult to adjust. I was just wondering if it would work. I'm sorry I didn't use the search button, but there's just too much indirect information you have to go through to get your answer. (I also didn't find any immediate answers).

AAlasers
 
Joined
Dec 23, 2008
Messages
3,948
Points
63
the smd pots on the flex drives have low cycle life. dr.lava states this openly. it is more of a set it and forget it deal.
.

michael.
 




Top