Charge control circuit
Patent 4409538 Issued on October 11, 1983. Estimated Expiration Date: 
July 17, 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.
July 17, 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 ReferencesBattery charging circuit Electronic timepiece battery-potential detecting circuit Charge control circuit Voltage detector Charger using one or more solar batteries Charging control circuit for electronic timepiece Patent #: 4316275 InventorAssigneeApplicationNo. 06/284345 filed on 07/17/1981US Classes:320/162, With detection of current or voltage amplitude320/101, WIND, SOLAR, THERMAL, OR FUEL-CELL SOURCE340/636.15, By voltage340/636.2, Including charging circuit368/205Solar cellExaminersPrimary: Shoop, William M.Attorney, Agent or FirmInternational ClassH02J 7/35 (20060101)Foreign Application Priority Data1980-08-27 JPAbstractA charge control circuit has an excess charge detecting circuit for preventing the excess charge of a secondary battery responsive to the voltage of the secondary battery, and a switching circuit responsive to the output of the excess charge detecting circuit. The switching circuit and the excess charge detecting circuit are operated by the electromotive force of a solar cell without the power dissipation of the secondary battery. | |
