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Old 04-21-2011, 01:30 AM #1
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Default Any 3v driver?

Hi guys, i've been reading a lot, almost ready to build a LM317 driver.
I've got some DVD-RW diodes.

But the LM317 driver requires 7.2 volt input, getting that from AA rechargables implies getting five of them toghether....

I was thinking, is there any 3v driver that can be built from store parts?

Thanks!


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Old 04-21-2011, 03:19 PM #2
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Default Re: Any 3v driver?

Surely its been mentioned before, but i'm thinking the easiest way to get 7.2 and not going for the rechargables standar batteries is to get a couple of 3.7 cellphone batteries. Only drawback its the custom conections u gotta do.
But they r rechargable as well, quick, and really space friendly.
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Old 04-21-2011, 03:25 PM #3
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Default Re: Any 3v driver?


just buy some 14500's...
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Old 04-21-2011, 03:27 PM #4
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Default Re: Any 3v driver?

You can use two li-ion batteries. If your thinking AAA size the Li-ion equivalent is 10440... I think.
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Old 04-22-2011, 04:00 PM #5
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Default Re: Any 3v driver?

For the price of a 14500 i get two BL 5C cellphone batteries.

Did a little research:
14500 3.6-7v 900mAh
vs
BL 5C 3.7v 850mAh (got the specs from nokia.com)

If u got a compatible charger, o even a cellphone to recharge em (thats my case) the BL 5C is the way to go.
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