In this article:
http://www.allaboutcircuits.com/tex...-long-duration-minimum-parts-red-led-flasher/
is described a circuit powered by two 1,5V batteries. The author specify that the use of a 100uF cap in parallel to the batteries "extends the life of the batteries, since it will store the voltage during the 97% of time the circuit is off, and provide the current during the 3% it is on".
But i have not understand how, given that every time the cap discharges, as many times the battery must provide the same energy.
Could someone let me understand the principle that let the batteries last longer with the cap C2 ?
kindly regards
http://www.allaboutcircuits.com/tex...-long-duration-minimum-parts-red-led-flasher/
is described a circuit powered by two 1,5V batteries. The author specify that the use of a 100uF cap in parallel to the batteries "extends the life of the batteries, since it will store the voltage during the 97% of time the circuit is off, and provide the current during the 3% it is on".
But i have not understand how, given that every time the cap discharges, as many times the battery must provide the same energy.
Could someone let me understand the principle that let the batteries last longer with the cap C2 ?
kindly regards