H - Electricity – 02 – H
Patent
H - Electricity
02
H
H02H 7/122 (2006.01) H02J 9/06 (2006.01) H02M 7/42 (2006.01) H02M 7/48 (2006.01)
Patent
CA 2277640
A DC-to-AC converting circuit generates an alternating current by alternately switching a set of switching elements. The alternating current is supplied to a load Lo via an output filtering circuit. If a current detection resistor R1 in the DC-to-AC converting circuit detects an output current that exceeds a reference voltage Vref corresponding to an over-current set value, certain switching elements are turned off to disconnect the DC-to-AC converting circuit from the power source. However, the DC-to-AC converting circuit continues to generate an alternating current from energy stored in one or more inductors that are coupled to the DC- to-AC converting circuit. Preferably, a closing circuit is formed from a diode, a switching element, the load Lo and the inductors. Thus, even if the DC-to-AC converting circuit is disconnected from its power source, an alternating current continuously flows to the load Lo.
Goudreau Gage Dubuc
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
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