Patent US4132154A successfully refreshed from Google Patents.
US3201679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state controlled rectifier voltage regulating system
Assignee: General Electric Co
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Filing: 1962-11-15
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Granted: 1965-08-17
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Expires: 1982-11-15
Abstract
No abstract record available.
Inventors
- 👤 James L Buchanan
- 👤 William B Zelina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:25
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/24; H02J7/2437; Y; Y02; Y02T; Y02T10/00; Y02T10/80; Y02T10/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
A SYSTEM FOR REGULATING THE VOLTAGE AND LIMITING THE CURRENT OF A DIRECT CURRENT GENERATOR TO A PRESENT VALUE BY CONTROLLING THE POWER SUPPLIED TO THE SHUNT FIELD WINDING THEREOF, COMPRISING: (A) A SOLID-STATE CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE; (B) MEANS FOR CONNECTING THE GENERATOR OUTPUT IN SERIES WITH SAID SHUNT FIELD WINDING AND THE ANODE-CATHODE ELEMENTS OF SAID CONTROLLED RECTIFIER; (C) VARIABLE-FREQUENCY RELAXATION OSCILLATOR CONTROL CIRCUIT MEANS INCLUDING A MULTI-LAYER SEMICONDUCTOR DIODE DEVICE FOR APPLYING A GATING SIGNAL DIRECTLY TO SAID CONTROL ELECTROD OF SUFFICIENT AMPLITUDE TO INITIATE CONDUCTION IN SAID CONTROLLED RECTIFIER; (D) CIRCUIT MEANS INCLUDING A RELAY FOR SUPPLYING SHUNT FIELD CURRENT AND FOR INITIALLY RENDERING SAID CONTROLLED RECTIFIER CONDUCTIVE DURING GENERATOR BUILD-UP; (E) COMMUTATION CIRCUIT MEANS SHUNTING SAID FIELD WINDING FOR TERMINATING CONDUCTION IN SAID CONTROLLED RECTIFIER A FIXED TIME AFTER INITIATION OF CONDUCTION THEREIN, SAID MEANS COMPRISING A SERIES RESONANT INDUCTANCE-CAPACITANCE CIRCUIT, A SECOND SOLID-STATE CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, MEANS CONNECTING SAID SERIES RESONANT CIRCUIT AND THE ANODE-CATHODE ELEMENT OF SAID SECOND CONTROLLED RECTIFIER IN SERIES CIRCUIT WITH THE ANODECATHODE ELEMENTS OF SAID FIRST CONTROLLED RECTIFIER, MEANS FOR APPLYING A GATING SIGNAL TO THE CONTROL ELCTRODE OF SAID SECOND CONTROLLED RECTIFIER WHEN
Claim 2
Independent Claim
210 words
A SYSTEM FOR REGULATING THE VOLTAGE AND LIMITING THE CURRENT OF A DIRECT CURRENT GENERATOR TO A PRESENT VALUE BY CONTROLLING THE POWER SUPPLIED TO THE SHUNT FIELD WINDING THEREOF, COMPRISING: (A) A SOLID-STATE CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE; (B) MEANS FOR CONNECTING THE GENERATOR OUTPUT IN SERIES WITH SAID SHUNT FIELD WINDING AND THE ANODE-CATHODE ELEMENTS OF SAID CONTROLLED RECTIFIER; (C) VARIABLE-FREQUENCY RELAXATION OSCILLATOR CONTROL CIRCUIT MEANS INCLUDING A MULTI-LAYER SEMICONDUCTOR DIODE DEVICE FOR APPLYING A GATING SIGNAL DIRECTLY TO SAID CONTROL ELECTROD OF SUFFICIENT AMPLITUDE TO INITIATE CONDUCTION IN SAID CONTROLLED RECTIFIER; (D) CIRCUIT MEANS INCLUDING A RELAY FOR SUPPLYING SHUNT FIELD CURRENT AND FOR INITIALLY RENDERING SAID CONTROLLED RECTIFIER CONDUCTIVE DURING GENERATOR BUILD-UP; (E) COMMUTATION CIRCUIT MEANS SHUNTING SAID FIELD WINDING FOR TERMINATING CONDUCTION IN SAID CONTROLLED RECTIFIER A FIXED TIME AFTER INITIATION OF CONDUCTION THEREIN, SAID MEANS COMPRISING A SERIES RESONANT INDUCTANCE-CAPACITANCE CIRCUIT, A SECOND SOLID-STATE CONTROLLED RECTIFIER HAVING AN ANODE, A CATHODE AND A CONTROL ELECTRODE, MEANS CONNECTING SAID SERIES RESONANT CIRCUIT AND THE ANODE-CATHODE ELEMENT OF SAID SECOND CONTROLLED RECTIFIER IN SERIES CIRCUIT WITH THE ANODECATHODE ELEMENTS OF SAID FIRST CONTROLLED RECTIFIER, MEANS FOR APPLYING A GATING SIGNAL TO THE CONTROL ELCTRODE OF SAID SECOND CONTROLLED RECTIFIER WHEN
References Cited (Backward Citations)
US3040270A
Cited
US3008082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |