hi
I would like to make one night light with 8-12 white LED's for reading the book's at bed time
which should turn on when power is on and should turn off one by one (as rechargeable battery (1.2V 2100mAh * 4) ) go's weak it should run for about 1 or 1 1/2
(may be some thing like Battery Tester , which shows the strength of the battery)
pl help
Should I use decade counter or the op-amp to design the ckt or something else
I don't want to use the timer in the ckt.
I would like to make one night light with 8-12 white LED's for reading the book's at bed time
which should turn on when power is on and should turn off one by one (as rechargeable battery (1.2V 2100mAh * 4) ) go's weak it should run for about 1 or 1 1/2
(may be some thing like Battery Tester , which shows the strength of the battery)
pl help
Should I use decade counter or the op-amp to design the ckt or something else
I don't want to use the timer in the ckt.