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minimag solitare

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guyfrom7up

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Has anyone managed to cram a highpower (at lest 100mw) laser into a minimag solitare? I'm going to try!
 





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SenKat

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Hmmmmm - I do not think it will work....last I heard, the solitair does not have a boost circuit in it, (this is the single AAA model, right ?) and as such only puts out 1.5 volts :(
 
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a_pyro_is

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But it might fit a few LR44s like Kenom did with that host he had hoped to use with a BluRay... But it wouldn't last more than a few seconds.
 
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guyfrom7up

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It does not have a boost circuit, but I'm going to design my own! Instead of only running off of a normal 1.5 volts battery I"m going to probably use a rechargable lithium, such as this one:
http://www.batteryjunction.com/10440.html

Lets say you use a 200 mW laser, this thing should last at least an hour, right? I'm going to use a red laser diode, so that's around 2.9 volts, so I actually need to build a buck circuit, thus lengthening the life of the battery.

Oh, and can I modify a cheap cr123A charger to accept a Lithium AAA from the same comp to accept it (just make it so the AAA fits) would it work?
 
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a_pyro_is

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Try the AMC7135 as a regulator. Look at some of Gazoo's posts about it. A GREAT little IC.
 
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guyfrom7up

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that looks like a perfect solution! I think that if I buy them from DX I'm going to have to take it off of the board, there isn't enough room in the solitare.
 
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a_pyro_is

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Can I split an order with you? I'm looking at the 10 pack or 1400mA boards as they have 4 on each board. I'm wanting 16-20 of the 7135s.
 
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guyfrom7up

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sure, I'll split an order with you, but how would it work (I mean money transaction and such, I've never really used PP outside of ebay)?



EDIT SO I DON"T DOUBLE POST: The more I've been looking into this the more this seems possible.

By using these components:

http://www.dealextreme.com/details.dx/sku.5900
http://www.batteryjunction.com/10440.html
AMC7135 chip (not board, the board is too big)
And, of course a LD

Everything should fit! I left a little bit of room for a protection circuit, does anybody know of a tiny IC that protect Lithium-ions that has extremeley little or no external components?
 
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