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Old 10-15-2011, 04:12 AM #1
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Default Driver Clarification

Hey all, have BDRS06 and A140 diodes on my desk ready for my first laser builds and am still a little "thick" on the driver issue.

I have a V5 flex, and a Jib 1.8A driver.

Now from my understanding, the V5 flex is a buck/boost driver, so whatever voltage the diode demands it will receive.
The V5 will be set to 500mA (on one 18650) and will dynamically change the output voltage based on the changing resistance of the laser diode as it heats up... ?

Now the JIB is a linear driver, and will be run by two 18650's, for a total voltage of 6.4V, going straight into the diode? (8.2 fully charged) So the voltage to the diode will fall off as the batteries are depleted.

My question is ,
1)what are the operating voltages of the laser diodes,
2)how is it that the Li-ion cells are just the right voltage for our laser hobby

Please correct anything I may have said wrong, this is how I have it in my head, but just want to make sure my understanding is sound before I start connecting the pins A simple yes will suffice!

Thanks!


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Old 10-15-2011, 06:19 AM #2
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Default Re: Driver Clarification

As I understand it and by what I have observed the Flexdrive will deliver the same fixed current to the diode regardless of the changing resistance of the diode.

The Jib driver I believe stays in regulation as long as the batteries are 1.5V over the forward voltage of the diode. The diode's forward voltage is around 4.8V @ 1.8A. It does vary from diode to diode slightly depending on the diode's efficiency. So with that as long as the batteries are in the range of 6.3V-8.4V(fully charged) the 1.8A current to the diode should be constant as well.
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Old 10-15-2011, 03:27 PM #3
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Default Re: Driver Clarification

Hey DTR, thanks for the response, its actually your A140 diode that you shipped last week

Cheers, Thanks!
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Old 10-15-2011, 03:53 PM #4
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Default Re: Driver Clarification

Cant say anything more ! DTR said everything you needed !
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