Author Topic: Powerful (and hackable!) Flashlight Kit  (Read 201 times)

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Offline T3sl4co1l

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Powerful (and hackable!) Flashlight Kit
« on: December 06, 2017, 11:15:28 AM »


This is the design I've shown and discussed elsewhere, now realized in non copper-clad-prototype form as well. :)

Powerful enough to suck down an 18650.  Not sure if these cells are in need of a charge, or just old and weak, but I'm only getting 50% of rated power out of these.  Nothing wrong with that, of course -- the undervoltage limiter circuit prevents brown-out failure.  That's why I know I'm getting only 50%. :)

Very hackable design.  Lots of test points.  Two resistors change it to a portable, adjustable bench supply!

Tim
Seven Transistor Labs, LLC
Electronic Design, from Concept to Layout.
Need engineering assistance? Drop me a message!
 

Online CJay

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Re: Powerful (and hackable!) Flashlight Kit
« Reply #1 on: December 06, 2017, 05:55:59 PM »
At that implied power level I bet it makes a nice hand warmer too :)
2E0EOA
 

Offline T3sl4co1l

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Re: Powerful (and hackable!) Flashlight Kit
« Reply #2 on: December 06, 2017, 08:15:28 PM »
Th old 1W flashlight I made, you can feel it, particularly in a sensitive area like point blank on your lips.

You can feel these in your hand, unmistakably. ;D

Tim
Seven Transistor Labs, LLC
Electronic Design, from Concept to Layout.
Need engineering assistance? Drop me a message!
 


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