Patent ID: 8508210
Filing Date: 2013-08-13
Classification: H02M

Abstract:
1. A method of controlling AC power delivered to a load from a power source where the nominal operational voltage of the load is smaller than the voltage of the power source, said method including the steps of: (a) receiving AC power from the power source; (b) applying half of a full AC cycle pulse to the load; (c) waiting for an even number of half-cycles to pass; (d) applying half of a full AC cycle pulse; and (e) repeating steps (c) and (d) according to a predetermined time wherein a duty cycle can be described by the formula Duty cycle=1/N=t/T=(v/V).sup.2, where: 1/N is a duty cycle in %, t—the length of applied AC voltage half cycle, T—the length of missed AC voltage cycles, V—Applied voltage from AC voltage source, v—nominal voltage needed by load.