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Old 01-07-2009, 09:24 PM #97
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Default Re: Feeler Extremely efficient boost circuits

Pics:



What you should know about it:
-VERY small - only 8mm x 10mm (x ~5mm)
-Is case ground (e.g. works for red and blu-ray)
-Is current regulated
-Up to 5.5 V output (needs testing)
-As low as 0.9 V input (needs testing)
-Range: 40mA to 200 mA (needs testing). *Will likely make a 500mA one as well.

I will send it thru some tests tomorrow and report back on its reliability.


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Old 01-07-2009, 11:33 PM #98
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Default Re: Feeler Extremely efficient boost circuits

any idea on potential price?
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Old 01-08-2009, 12:48 AM #99
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Default Re: Feeler Extremely efficient boost circuits

Tentatively? $25 per driver to the Continental U.S., $3 extra per order to anywhere else to cover PayPal fees and shipping.

I will most likely be limiting these to orders of 5 per person per week since I am a graduate student and have a limited amount of time to hand make these.

The plan is that these are "made to order" on Friday/Saturday as long as I have adequate parts. *If I don't have the parts, it could take an additional week.

These are still untested, so as soon as they're tested, I'll start a new thread to start offering these for sale. And decide what to do about the above tentative comments.
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Old 01-08-2009, 10:31 PM #100
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Default Re: Feeler Extremely efficient boost circuits

I've tested the driver and have decided that they're not for sale yet. *The boards are boosting, but they need some stabilization before I'm comfortable with selling them. *Hopefully it doesn't require a redesign of the board (crosses fingers).

These boards can deliver at least 100 mA to a PHR from a single alkaline AA...hopefully more.

Edit: Stability has been achieved (I think), but the solution may come at the cost of redesiging the board. Since I don't want to wait six weeks for another set of boards, I'm seeing if I can find a better solution right now.

FYI, you will not want to run these off of alkaline batteries. They will die very quickly on you if you do.
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