the $15 LM317

[djayz]

Sorry i dint quote, yes yours @kiyoukan

 

[kiyoukan]

the cap is the brown looking thing and the protection diode is the other tiny black block.
There in between the green and black wires.
they are smd parts.

 

[djayz]

Ok coooool.. but doesnt overheating an issue, afterall its all fused togather what happens if it fries the diodes n capacitor.. i think u should add a custom heatsink if its worth it!

 

[kiyoukan]

i just glued it to the side of my heatsinks. that is why that back plate is there.
That was one of my first drivers i made right there.
that right there powered all my builds.

 

[strik3]

all i can say is wow.

 

[Mohrenberg]

god take a look at my driver.
sure its just a lm317 but it has a cap and a diode to protect your laser.

i might sell this for a max of 7.5$

mine will be something like that....for the kits.

 

[kiyoukan]

idk it just seemed so simple there was no need to even make a pcb for it. just bend one pin as a contact for one side of the smd chips then use the wire for the other side.
And the resistor fits in perfectly, but i can see the fact that a pcb will look a ton better.

 

[djayz]

So this means removing the 100Ω VR doesnot affect anything , and the total current output still depends on how well we choose the other resistance?
For instance a 4Ω Resistance would give just about 310mA while remaining circuit remains the same and the VR also eliminated..