Patent ID: 8837100
Filing Date: 2014-09-16
Classification: H01J,H02H

Abstract:
1. A power supply device for plasma processing, wherein electric arcs may occur, comprising, a power supply circuit for generating a voltage across output terminals, said output terminals being for connection to a plasma processing chamber by means of conductors, an interrupting switch connected between said power supply circuit and one of said output terminals for interrupting the power supply to said plasma processing chamber in case of the occurrence of an arc, and an energy recovery circuit connected to said output terminals and to said power supply circuit, said energy recovery circuit serving for feeding at least partially the energy which is stored in said conductors when said interrupting switch is actuated to interrupt the power supply to said plasma processing chamber back to said power supply circuit; wherein said power supply circuit is configured to reuse the energy fed back at least partially for the power supplied to said plasma processing chamber.