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Thread: LED Challenged
www.piclist.com/techref/displays.htm?key=led
picon face BY : Spehro Pefhany email (remove spam text)



At 08:02 PM 5/29/00 +0530, you wrote:
>why would anyone want to use a PWM thru a 555 waveform to change the
>intensity of an ordinary LED?.....if u req a large sensitivity use a small
>FET , or somethg in series with the LED or somethng.. of course u need a god
>amt om resistance calulations and make sure no surge current in LED et al.
>Alok

Why would anyone what to reduce the brighness of the backlight?

Maybe to save power and extend battery life?  PWM will do that.

Best regards,



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In reply to: <7A1D89E372A9D31193420060086857D557F84A@PLUTO>
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