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FrozenGate by Avery

MAGIC and IRON4D by rhd - Info and Guide

I would agree with that current being safer but he is limited by the output of the driver being set to 1050mA unfortunately. It could be changed but he would have to switch out resistors.
 





benmwv said:
I was just about to post that I saw them on your site clif :D

Yeah, the magic isn't actually a driver, it just allows you to put the battery in either way and the laser still function. Basically you would have battery > contact board > Magic > driver > diode.

You can run 1050ma in the 300mw diodes. The 500mw can handle at least 2x 700ma board stacked (1400ma).
Click to expand...

Benmwv says 1050 is fine?
 
It likely will be but there is risk as there is with overdriving any diode as far as we do. This case the risk may be a tad higher but still worth it IMO.
 
There is also the 700mA version for the 300mw diode, I believe the beginning of that diode's peak power on the curve was at around 700mA. IIRC the power didn't increase substantially beyond that current, at least not without massive cooling / heat sinking.
I would use the 1050mA on the 500mw personally, but like you said we run these things much higher than they're rated anyhow since we don't care if they don't last 20,000hrs or whatever. even 100 hrs is good in my book for what we do with them :D
 
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I like the concept of the IRON4D. Is the heatsinking adequate for a reasonable duty cycle?
 
If you used thermal epoxy to attach it to the module then the heatsinking should be fine.
 
I would run any Mit. 300mW diode at or around 700mA to 750mA max. They are pretty, but once there driven hard they climb on the spectrum quite a bit. One more thing is they sure get hot at the higher powers.
 
Hey Clif I sent you a PM, maybe you could change my 1050mA driver order to a 700mA? I would be very appreciative! Anyway, I'll stop making this my question thread and let it get back on track.

Thanks,
Isaac

PS- +1 for OP for the amazing driver idea!
 
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No, unless you can supply the drivers with a maximum of 6V. An M140 requires too much voltage to run on one lithium and two lithiums are too much for the drivers.

EDIT: Just snagged two of the 700mA version and a 500mW Mitsu from Cajunlasers. Time to make myself a freaking tiny 1W 638nm.
 
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Maybe someday, but for now we will be limited to insanely small red builds :P

I am planning the 1W 638nm to be in an Ultrafire WF-602C. Its insanely small and will likely heat up fast so it will have a short duty cycle. The crazy small size is worth it to me though.
 
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I have my 300mw mits 635nm laser running at 700ma, but a lot of people have run their diodes at 1050ma. I went with 700ma for longer life and lower wavelength.

You can see here 1050ma is pushing the top edge of what the diodes can handle:
http://laserpointerforums.com/f52/rayfoss-mitsubishi-638nm-300mw-laser-diode-67381.html#post971328

The 6v max is a limitation of the AMC7135s the driver is based on, so there isn't going to be a high voltage version. If you are creative it is possible to use them with a 445 diode, but there are better options available. The whole point of a low dropout driver is to use it for single cell builds.
 
I agree, there are better ways out there to power an M140 such as a boost driver. These drivers are just plain awesome for red builds though.

Now I'm wondering if my Mitsu will have long enough pins for two stacked drivers.

Post-build update:
The Mitsu 500's pins were about 2mm short of poking through the second IRON4D but were just barely(and I mean barely) long enough for me to solder them by poking my iron into the holes. The finished laser is running two 700mA IRON4Ds stacked and they pull 1.27A at the battery for an output of 873mW on an IMR cell.
 
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