US3299318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for igniting controlled rectifiers with the aid of pulses
Assignee: US Philips Corp
•
Filing: 1964-11-25
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Granted: 1967-01-17
•
Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 Schutte Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:25
CPC Classifications
H; H02; H02M; H02M1/00; H02M1/02; H02M1/04; H02M1/08; H02M1/081; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/15; H02M7/155; H02M7/1555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A CONTROL CIRCUIT FOR A CONTROLLED RECTIFIER OF THE TYPE HAVING AN ANODE, A CATHODE, AND A CONTROL ELECTRODE, COMPRISING MEANS FOR APPLYING AN A.C. SUPPLY VOLTAGE TO THE ANODE-CATHODE PATH OF SAID CONTROLLED RECTIFIER, MEANS FOR DERIVING AN A.C. VOLTAGE WHICH LEADS SAID A.C. SUPPLY VOLTAGE BY APPROXIMATELY 90 DEGREES, MEANS FOR DERIVING AN A.C. VOLTAGE WHICH LAGS SAID A.C. SUPPLY VOLTAGE BY APPROXIMATELY 15 DEGREES, MEANS FOR RECTIFYING THE LAGGING VOLTAGE TO OBTAIN A RECTIFIED HALF-WAVE VOLTAGE, MEANS FOR COMBINING SAID LAGGING RECTIFIED VOLTAGE AND SAID DERIVED LEADING A.C. VOLTAGE TO PRODUCE A CONTROL VOLTAGE, A SOURCE OF DIRECT VOLTAGE, AND MEANS FOR SUPPLYING SAID CONTROL VOLTAGE AND SAID DIRECT VOLTAGE TO SAID CONTROL ELECTRODE SO AS TO CONTROL THE CONDUCTION OF SAID CONTROLLED RECTIFIER.
Claim 2
Dependent Claim
127 words
A CONTROL CIRCUIT FOR A CONTROLLED RECTIFIER OF THE TYPE HAVING AN ANODE, A CATHODE, AND A CONTROL ELECTRODE, COMPRISING MEANS FOR APPLYING AN A.C. SUPPLY VOLTAGE TO THE ANODE-CATHODE PATH OF SAID CONTROLLED RECTIFIER, MEANS FOR DERIVING AN A.C. VOLTAGE WHICH LEADS SAID A.C. SUPPLY VOLTAGE BY APPROXIMATELY 90 DEGREES, MEANS FOR DERIVING AN A.C. VOLTAGE WHICH LAGS SAID A.C. SUPPLY VOLTAGE BY APPROXIMATELY 15 DEGREES, MEANS FOR RECTIFYING THE LAGGING VOLTAGE TO OBTAIN A RECTIFIED HALF-WAVE VOLTAGE, MEANS FOR COMBINING SAID LAGGING RECTIFIED VOLTAGE AND SAID DERIVED LEADING A.C. VOLTAGE TO PRODUCE A CONTROL VOLTAGE, A SOURCE OF DIRECT VOLTAGE, AND MEANS FOR SUPPLYING SAID CONTROL VOLTAGE AND SAID DIRECT VOLTAGE TO SAID CONTROL ELECTRODE SO AS TO CONTROL THE CONDUCTION OF SAID CONTROLLED RECTIFIER.
References Cited (Backward Citations)
US2946942A
Cited
BE555175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |