Multiple feedback control apparatus for power conditioning equipment
Patent 4013939 Issued on March 22, 1977. Estimated Expiration Date: 
March 22, 1994. 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.
March 22, 1994. 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 3320512 3356930 3378758 3585491 3602801 3626277 3665291 3675159 3772588 InventorsApplicationNo. 05/537294 filed on 12/30/1974US Classes:323/286Including filter sensingExaminersPrimary: Pellinen, A. D.Attorney, Agent or FirmAbstractAn improved feedback control system to govern the cyclic operation of the power switch of a non-dissipative power conditioning equipment. The apparatus includes two or three control loops working in unison. The first causes the output DC level to be compared with a reference, and the error amplified for control purposes. The second utilizes the AC component of the voltage across the output filter inductor or the current through the output filter capacitor, and the third loop senses the output transients. | |
