Patent ID: 8506771
Filing Date: 2013-08-13
Classification: H01J,H02M

Abstract:
1. A bipolar pulsed power supply comprising: a bridge circuit made up of switching elements connected to positive and negative DC output ends from a DC power supply source; and a control means for controlling switching ON or OFF of each of the switching elements in the bridge circuit so that power is supplied at a predetermined frequency in a bipolar pulsed mode to a pair of electrodes that come into contact with a plasma, wherein an output-short-circuiting switching element is disposed between the positive and the negative DC outputs from the DC power supply source, the output-short-circuiting switching element being configured to generate a short-circuited state, and each of the switching elements in the bridge circuit is switched by the control means during the short-circuited state generated by the output-short-circuiting switching element.