Re: TI-H: LED Backlight


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Re: TI-H: LED Backlight




From: Grant Stockly <gussie@alaska.net>
>A PN222 will amp a 10ma signal to a minimum of 75ma and a max of 300.  They
>leak .1ma.


Input signal for the switch is approximately 0.05mA, which is one reason I
suggest
a darlington (which typically has a gain of 4,000-75,000 for those of you
who are
not familiar with them).

There are lots of ways to improve and/or fix the circuit as it stands,
however, I have
a totally new design that I will be testing as soon as I can locate parts.

DK



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