Is it possible for a Capacitor to supply a servo motor with enough power for it to close the servo when power is disconnected? I've got an application where I need to close a servo valve that takes 7 Amps (12 Volts) to run and it takes 4 seconds to close the valve. Voltage can vary between 13 and 7 Volts.
Any idea what Capacitor size I need to look at. I tried a 40V 5100uF capacitor that was sold as a battery replacement for a motorcycle but it discharges before the valve even moves.