LED bulbs

Karl W4KRL W4KRL at arrl.net
Wed Jan 14 12:35:28 CST 2015


Richard,

Here is my article for converting a dollar store cell phone charger to a
boost mode supply for LEDs.

My approach is easier, more elegant  and more effective than the
Instructables approach. Of course you can buy the parts and build your own
instead of converting the dollar store unit. If you do that I would suggest
using the NCP3063 chip.

*73 Karl W4KRL*

On Wed, Jan 14, 2015 at 12:24 PM, Richard O'Neill <
richardoneill at earthlink.net> wrote:

>  Hello Karl,
>
>  Could you email me the instructions for converting the LED to 12 volts?
>
> Best Regards,
> Richard
>
>
>
> On 1/14/2015 12:07 PM, Karl W4KRL wrote:
>
>  If you want to try LED bulbs but don't want to take out a second
> mortgage on your home Staples has 800 lumen (60W equivalent) bulbs on sale
> for $3.99 in stores (not online). It is 3000K and dimmable. Sold under
> the Staples brand but looks very much like a Phillips.
>
> ​ They were prominently on display​ inside the front door at the Manassas
> Sudley Road store.
>
>   My article in the July 2012 Newsletter shows how to convert LED bulbs
> to 12Vdc for $1.
>
>
>
>   *73 Karl W4KRL*
>
>
>
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