[Noisebridge-discuss] LED driver

[Mitch Altman]

Another way cool way to run LEDs off of way dead batteries is by using a "joule thief":
http://www.evilmadscientist.com/article.php/joulethief
(No need to buy any chips at all!  Just a transistor, a resistor, and a coil.)
 
Mitch.
 

 
> From: jim at systemateka.com
> To: noisebridge-discuss at lists.noisebridge.net
> Date: Mon, 8 Nov 2010 17:27:36 -0800
> Subject: [Noisebridge-discuss] LED driver
> 
> 
> Great little article tells how to drive one or more LEDs 
> from old, dying batteries: 
> http://www.edn.com/article/510577-LED_flashlight_circuit_works_at_voltages_as_low_as_0_5V.php 
> 
> This is the chip that does it (LT1932): 
> http://www.linear.com/pc/productDetail.jsp?navId=H0,C1,C1003,C1042,C1031,C1061,P2114
> 
> 
> 
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