Current commutation circuit
Patent 4723187 Issued on February 2, 1988. Estimated Expiration Date: 
November 10, 2006. 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.
November 10, 2006. 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 References 3588605 3809959 3868549 AC fault current limiting circuit Solid state arc suppression device Hybrid D.C. power controller Active arc suppression for switching of direct current circuits Thyristor-switched capacitor apparatus Circuit breaker Fault current interrupter InventorAssigneeApplicationNo. 06/929049 filed on 11/10/1986US Classes:361/13, Shunt bypass of main switch361/11, Nonlinear impedance361/5, With current sensitive control circuit361/57, Current responsive361/58Impedance insertionExaminersPrimary: Pellinen, A. D.Assistant: Jennings, Derek S. Attorney, Agent or FirmInternational ClassH01H 9/54 (20060101)AbstractLoad current is diverted from a circuit breaker, when it is opened, through a commutation circuit. The latter has a capacitor, inductance and solid state switch serially connected with the output of a bridge rectifier. The input of the bridge is connected across the breaker. The switch is turned on to discharge the precharged capacitor to form a current pulse, presenting an extremely low resistance across the bridge input and causing load current diversion.Other References
| |
