the capacitor discharges and supplies the required amount of power to the power consuming components when the capacitor has 0 1f capacity and the battery is a silver oxide button sized battery with 0 186 watt output the release mode can take 10 milliseconds while the accumulation time is about 8 times higher discharged power and current are designated as p 2 and i 2 respectively in some embodiments there may be continued charging of the capacitor even during the discharge phase which shortens the time interval between two consecutive pulses if the capacitor is fully loaded the charging process may not continue fig1 a shows the angular velocity u03c9 m of the motor versus time t and fig1 b shows the corresponding power p discharged from the capacitor and supplied to the motor during this period the motor operates the pump to deliver fluid e g insulin via the dispensing unit when the motor is rotated based on energy from the capacitor only a limited amount of fluid can be delivered during a single charging discharging cycle and therefore more than one cycle may be required to deliver the appropriate amount of fluid required for therapeutic treatment in some embodiments a variant pulse train can be supplied to the motor each time the.