Patent US3351779A successfully refreshed from Google Patents.
US3351779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circuit for suppression of voltage peaks across a rectifier
Assignee: US Philips Corp
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Filing: 1964-12-15
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Granted: 1967-11-07
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Expires: 1984-12-15
Abstract
No abstract record available.
Inventors
- 👤 Hehenkamp Theodorus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/125; H02M1/00; H02M1/08; H02M1/088; H02M7/145; H02M7/155; H02M7/19; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A CIRCUIT ARRANGEMENT FOR DISSIPATING THE STORED CHARGE ON AT LEAST ONE OF AT LEAST TWO SEMICONDUCTOR CONTROLLED RECTIFIERS EACH HAVING A CATHODE AN ANODE AND A TRIGGERING CONTROL ELECTRODE, COMPRISING, MEANS FOR APPLYING A VOLTAGE TO SAID RECTIFIER, SAID VOLTAGE EXCEEDING THE MAXIMUM PERMISSIBLE VOLTAGE FOR THE CATHODEANODE PATH OF ONE OF SAID RECTIFIERS, A LOAD CIRCUIT, MEANS CONNECTING THE CATHODE ANODE PATH OF ALL OF SAID RECTIFIERS IN THE SAME PASSING DIRECTION AND IN SERIES WITH SAID LOAD CIRCUIT ACROSS SAID MEANS FOR APPLYING A VOLTAGE, MEANS FOR APPLYING PERIODIC TRIGGERING TO TRIGGER ALL OF SAID RECTIFIERS INTO CONDUCTION SUBSTANTIALLY SIMULTANEOUSLY, FIRST AND SECOND CAPACITIVE MEANS CONNECTED IN SERIES ACROSS SAID MEANS FOR APPLYING A VOLTAGE, AND MEANS CONNECTING EACH OF SAID RECTIFIERS TO THE JUNCTION POINT OF SAID FIRST AND SECOND CAPACITIVE MEANS FOR DISSIPATING THE STORED CHARGE ON AT LEAST ONE OF SAID RECTIFIERS.
Claim 2
Dependent Claim
148 words
A CIRCUIT ARRANGEMENT FOR DISSIPATING THE STORED CHARGE ON AT LEAST ONE OF AT LEAST TWO SEMICONDUCTOR CONTROLLED RECTIFIERS EACH HAVING A CATHODE AN ANODE AND A TRIGGERING CONTROL ELECTRODE, COMPRISING, MEANS FOR APPLYING A VOLTAGE TO SAID RECTIFIER, SAID VOLTAGE EXCEEDING THE MAXIMUM PERMISSIBLE VOLTAGE FOR THE CATHODEANODE PATH OF ONE OF SAID RECTIFIERS, A LOAD CIRCUIT, MEANS CONNECTING THE CATHODE ANODE PATH OF ALL OF SAID RECTIFIERS IN THE SAME PASSING DIRECTION AND IN SERIES WITH SAID LOAD CIRCUIT ACROSS SAID MEANS FOR APPLYING A VOLTAGE, MEANS FOR APPLYING PERIODIC TRIGGERING TO TRIGGER ALL OF SAID RECTIFIERS INTO CONDUCTION SUBSTANTIALLY SIMULTANEOUSLY, FIRST AND SECOND CAPACITIVE MEANS CONNECTED IN SERIES ACROSS SAID MEANS FOR APPLYING A VOLTAGE, AND MEANS CONNECTING EACH OF SAID RECTIFIERS TO THE JUNCTION POINT OF SAID FIRST AND SECOND CAPACITIVE MEANS FOR DISSIPATING THE STORED CHARGE ON AT LEAST ONE OF SAID RECTIFIERS.
References Cited (Backward Citations)
US3164767A
Cited
US3263152A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |