Hi Everybody

Hope you can make some sense of my ramblings:-

I have a requirement to design and build a low power led circuit.... My Idea (early days) (very) is to use a PIC... Strobe the 4 - 6 outputs HPWM? or just on/off...around 60hz at least. 5% duty cycle so as no flicker...

The pic output pins driving a FET (2n7000 ?) ultamatly a string of white high lux o/p low power leds.

Has something similar been done before..... The requirement is to save power. The existing circuit we have is drawing 160mA at 24v. Just by using simple current limiting bipolar transistors. 5 rows of 25mA leds.

Any pointers advise etc accepted

Thank you

Andy