Hi. I need help on calculating the time it will take to discharge a SuperCap of 1.5Farad charged at 3,7 Volts down to 2,3 volts at a rate of 500nA.
This SuperCap is charged through diodes and a resistor from +5Volts and upon power failure, it will back up a DS1307 through a BAT85 diode.
Thanks for any help,
John
This SuperCap is charged through diodes and a resistor from +5Volts and upon power failure, it will back up a DS1307 through a BAT85 diode.
Thanks for any help,
John