Regulating current between driver and diode

[AAlasers]

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

 

[spaceman_hux]

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

 

[laser_freak]

^ 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).

 

[AAlasers]

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

 

[chipdouglas]

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.