Patent US1905806A successfully refreshed from Google Patents.
US3304489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency switching regulator
Assignee: AT&T Inc
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Filing: 1963-04-15
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Granted: 1967-02-14
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Stephen J Brolin
- 👤 George W Meszaros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A HIGH SPEED SWITCHING REGULATOR WHICH COMPRISES A SOURCE OF DIRECT POTENTIAL, A LOAD, A REGULATING TRANSISTOR HAVING ITS EMITTER AND COLLECTOR ELECTRODES SERIALLY CONNECTED WITH SAID SOURCE OF DIRECT POTENTIAL AND SAID LOAD SPONSIVE TO LOAD VOLTAGE VARIATIONS, AND BIASING MEANS TO INTERRUPT THE FLOW OF CURRENT FROM SAID SOURCE TO SAID LOAD, A SERIALLY CONNECTED SWITCHING CONTROL NETWORK COMPRISING ENERGY STORAGE MEANS AND A CONTROL ELEMENT CONNECTED TO THE BASE AND EMITTER ELECTRODES OF SAID REGULATING TRANSISTOR TO SWITCH THE EMITTER-COLLECTOR AND EMITTERBASE PATHS OF SAID REGULATING TRANSISTOR BETWEEN CONDUCTIVE AND NONCONDUCTIVE STATES, MEANS CONNECTING SAID CONTROL ELEMENT TO SAID LOAD TO RENDER SAID CONTROL ELEMENT RESPONSIVE TO LOAD VOLTAGE VARIATIONS, AND BIASING MEANS CONNECTED TO SAID CONTROL ELEMENT TO BIAS SAID CONTROL ELEMENT INTO CONDUCTION DURING THE CONDUCTIVE INTERVAL OF SAID REGULATING TRANSISTOR, SAID CONTROL ELEMENT PROVIDING A CONDUCTIVE REVERSE CURRENT PATH THROUGH THE BASE-EMITTER PATH OF SAID REGULATING TRANSISTOR FOR THE ENERGY STORED IN SAID ENERGY STORAGE MEANS WHEREBY EACH TRANSITION OF SAID REGULATING TRANSISTOR FROM A CONDUCTIVE TO A NONCONDUCTIVE STATE IS INITIATED.
Claim 2
Dependent Claim
178 words
A HIGH SPEED SWITCHING REGULATOR WHICH COMPRISES A SOURCE OF DIRECT POTENTIAL, A LOAD, A REGULATING TRANSISTOR HAVING ITS EMITTER AND COLLECTOR ELECTRODES SERIALLY CONNECTED WITH SAID SOURCE OF DIRECT POTENTIAL AND SAID LOAD SPONSIVE TO LOAD VOLTAGE VARIATIONS, AND BIASING MEANS TO INTERRUPT THE FLOW OF CURRENT FROM SAID SOURCE TO SAID LOAD, A SERIALLY CONNECTED SWITCHING CONTROL NETWORK COMPRISING ENERGY STORAGE MEANS AND A CONTROL ELEMENT CONNECTED TO THE BASE AND EMITTER ELECTRODES OF SAID REGULATING TRANSISTOR TO SWITCH THE EMITTER-COLLECTOR AND EMITTERBASE PATHS OF SAID REGULATING TRANSISTOR BETWEEN CONDUCTIVE AND NONCONDUCTIVE STATES, MEANS CONNECTING SAID CONTROL ELEMENT TO SAID LOAD TO RENDER SAID CONTROL ELEMENT RESPONSIVE TO LOAD VOLTAGE VARIATIONS, AND BIASING MEANS CONNECTED TO SAID CONTROL ELEMENT TO BIAS SAID CONTROL ELEMENT INTO CONDUCTION DURING THE CONDUCTIVE INTERVAL OF SAID REGULATING TRANSISTOR, SAID CONTROL ELEMENT PROVIDING A CONDUCTIVE REVERSE CURRENT PATH THROUGH THE BASE-EMITTER PATH OF SAID REGULATING TRANSISTOR FOR THE ENERGY STORED IN SAID ENERGY STORAGE MEANS WHEREBY EACH TRANSITION OF SAID REGULATING TRANSISTOR FROM A CONDUCTIVE TO A NONCONDUCTIVE STATE IS INITIATED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |