Joint bank several control die power-supply units

摘要

PROBLEM TO BE SOLVED: To reduce the cost for and enhance the reliability of equipment, by controlling the connection of capacitors with fewer number of switches. ;SOLUTION: A power supply device, which stores electrical energy in capacitor banks and supplies a load with power is provided with capacitor banks C1-C3 for output which are charged and discharged within the range of the rated voltage of the load, capacitors banks C4, C5 for adjustment which are charged and discharged within the allowable range of fluctuation in load voltage, switching means S1-S3 which series-connect and disconnect the capacitor banks C1-C3 for output and the capacitor banks C4, C5 for adjustment, and a control means A1, which detects the status of charging and discharging of the capacitor banks C1-C3 for output and controls the switching means. A less fluctuating power supply with an output voltage adjusted within the allowable range of fluctuation in load voltage is obtained by series-connecting the capacitor banks for adjustment to the capacitor banks for the output or disconnecting the capacitor banks for adjustment from the capacitor banks for output.;COPYRIGHT: (C)1999,JPO