Patent ID: 7012824
Filing Date: 2006-03-14
Classification: H02M

Abstract:
1. A method of converting an input alternating voltage into an output direct voltage using a large electrolytic condenser, the method comprising the steps of: (a) determining whether the level of the input alternating voltage is equal to or greater than a first predetermined level; (b) rectifying the input alternating voltage to produce the output direct voltage if the level of the input alternating voltage is equal to or greater than the first predetermined level; (c) determining whether the level of the input alternating voltage is equal to or greater than a second predetermined level that is greater than the first predetermined level; (d) stopping the rectification of the input alternating voltage if the level of the input alternating voltage is equal to or greater than the second predetermined level; and (e) if said rectification is stopped, determining whether the provision of the input alternating voltage is stopped and then resumed and proceeding to step (a) if it is determined that the input alternating voltage has been stopped and then resumed.