Quad RED module, home made, miniature size

[mccarrot]

Can you post the schematic of the tec driver, I have discovererd my dual red setup is getting pretty warm after a few hours.

[sbk]

Yes, if you can wait two weeks... I have the schematics on a paper at my work and I'm on holidays now

If you can't wait, basically it's a first op amp in comparator mode (you can make an hysteresis if you want), with a voltage reference fixed by a voltage divider (adjusted by a pot), and the swinging voltage is gived by a 10k NTC.
This op amp drives a simple current source in an ON/OFF logic.

Current source (replace the zener by a pot, and use a high current transistor, like BD437) :

[LarryDFW]

SBK;

Very nice work on the Quad-LPC setup.

If you are using Aixiz plastic lenses, they will degrade with the LPC power levels you are operating with.

High NA aspheric Glass lenses assemblies like the #27 for the Aixiz module should also give you at least >20% more power output and a better collimated beam.

LarryDFW

[sbk]

Hi Larry,

Thanks for the advice. That's why I've already replaced the old Aixiz plastic lenses by some LENS27, high grade AR coated glass lenses

[dave]

Mr. SBK and Mr. P1t8ull are the inspiration for this. Its going to be tiny- the base bit of aluminium is 50mm x 50mm

So far so good, more pictures coming soon!

[sbk]

Nice! Looking forward for pictures of the finished module

An advice : if you can, allow more X-axis adjustments than my module for the adjustable mounts which supports the knife mirrors... That should ease your adjustments a lot!

[chad]

Looking cool dave! What is the insulating material?
sbk, also really cool.
chad

[dave]

Looking cool dave! What is the insulating material?
sbk, also really cool.
chad

Hey Chad,

My insulating material is the same as what Simon uses. Thermal epoxy. Next time I'm out in the workshop, Ill take a pic of the a mount held in the alignment jig I made up. I put much thought into the best, most stable way to mount the lens tube, and kept coming back to the method Simon uses, which is potting with thermal epoxy.

[Laserman532]

standing by for greatness! I dont see how you are gonna get, 2 scrapers and a pbs all adjustable in that small of a space...amazing... Ohhh now I see the little adjustable mounts on your bench

[andy_con]

Mr. SBK and Mr. P1t8ull are the inspiration for this. Its going to be tiny- the base bit of aluminium is 50mm x 50mm

So far so good, more pictures coming soon!

i have to agree simon is a very very helpful chap and helped me do this

granted its not as neat as others but does just the same thing