Step-up and step-down chopper device
Patent 5059887 Issued on October 22, 1991. Estimated Expiration Date: 
August 10, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 10, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.InventorsAssigneeApplicationNo. 566085 filed on 08/10/1990US Classes:323/222, Using choke and switch across source363/124In chopper converter systemsExaminersPrimary: Stephan, Steven L.Assistant: Berhane, Adolf Attorney, Agent or FirmForeign Patent References
International ClassG05F 001/56Foreign Application Priority Data1989-08-23 JPAbstractA direct current to direct current converting chopper device comprising essentially two switching elements, two reactors, two diodes and three condensers likewisely with a conventional device but able to maintain rather stable output voltages to avoid higher harmonic noises and able to provide output voltage higher than the input voltage. | |
