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Old 06-01-2008, 07:24 PM #1
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Default TINY Blu-Ray switching power supply on eBay now

Hi all,
*
I just wanted to point out that I've got a tiny (0.52"L x0.36"W x0.19"T) Blu-Ray switching power supply on eBay now (see photo). *It accepts a WIDE range of input voltages from 0.4v up to 5.5v! *This means your laser won't quit until the batteries are REALLY dead! *It is regulated and feeds the violet LD with about 41mA, a safe value. Check it out:
http://cgi.ebay.com/ws/eBayISAPI.dll...:IT&ih=009 .
I don't have a lot of time to make big orders, so I'll be leaking them out one at a time on eBay, so keep your eyes open!

I offer some construction info and schematics here so you can build your own: http://web.mit.edu/cjoye/www/lasers/BluRay1/ .



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Old 06-02-2008, 03:58 AM #2
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Default Re: TINY Blu-Ray switching power supply on eBay no

Hey - that is some mighty fine work you have done there ! Serious kudos for the inventiveness ! I am still reading your write up, I love the idea of the touch switch, too !
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Old 06-02-2008, 04:38 AM #3
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Default Re: TINY Blu-Ray switching power supply on eBay no

It works down to .4v This is incredible, you could power a PS3 bluray out of a single AA battery, AAA if you wanted to go even smaller.
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Old 06-02-2008, 04:54 AM #4
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Default Re: TINY Blu-Ray switching power supply on eBay no

Any chance of getting, say, 100mA out of one? All of my builds will be 803T's.
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Old 06-04-2008, 02:23 PM #5
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Default Re: TINY Blu-Ray switching power supply on eBay no

Yeah, these are actually MORE efficient at 100mA-200mA!! We'd have to chance the dropping resistor and try it out, hoping that the I-V characteristic of the 803T doesn't change too much as it warms up, but I'd love to try it. PM me if you'd like to be the first one to drive a 803T from a AAA battery!

-colin
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Old 06-12-2008, 03:35 PM #6
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Default Re: TINY Blu-Ray switching power supply on eBay no

will you be puting another one on soon>?
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Old 06-13-2008, 10:15 AM #7
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Default Re: TINY Blu-Ray switching power supply on eBay no

why didn't you use the tps61200 and make it proper constant current, using a sense resistor for the feedback?

its a nice little chip. makes so much possible
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