Power controlling circuit for automatic regulating apparatus
Patent 4449091 Issued on May 15, 1984. Estimated Expiration Date: 
December 31, 2001. 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.
December 31, 2001. 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.Patent ReferencesControl unit for an a-c control element with full-wave control Dimmer control system Patent #: 4287468 InventorAssigneeApplicationNo. 06/336331 filed on 12/31/1981US Classes:323/236, Nonelectrical condition sensing323/910TWO OF THREE PHASES REGULATEDExaminersPrimary: Pellinen, A. D.Attorney, Agent or FirmInternational ClassesG05F 1/10 (20060101)G05F 1/45 (20060101) G05D 23/19 (20060101) AbstractA power controlling circuit for automatic temperature regulator or the like using a zero voltage switching control. Clocks are dispersed and selected, in accordance with control factor, from among the clocks synchronized with the load power supply when zero voltage is detected from the load side to perform the zero cross control of the energization to the load through the detection of the zero voltage from the load side thereby to drive the zero cross control by the selection clock. The current limit close to the phase control can be achieved without any production of the noises. Also, the power control can be achieved without any production of the noises and does not damage the resolution and response property. | |
