US3074031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetically controlled switching circuit
Assignee: LAMBDA NOVATRONICS Inc A CORP OF FL
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Filing: 1961-05-09
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Granted: 1963-01-15
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Expires: 1981-05-09
Abstract
No abstract record available.
Inventors
- 👤 Henri H Hoge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:56
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/538; H02M7/5381; H02M7/53803; H02M7/53806; H02M7/5383; H02M7/5387; H02M7/53871; H03; H03K; H03K3/00; H03K3/02; H03K3/33; H03K3/45
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A SWITCHING CIRCUIT COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, A DIODE, A POWER CIRCUIT INCLUDING SAID COLLECTOR-EMITTER ELECTRODES AND DIODE IN SERIES WITH THE DIODE POLED TO CONDUCT FORWARDLY WHEN THE TRANSISTOR ISCONDUCTING, A SQUARE LOOP SATURABLE TRANSFORMER CORE, A FIRST MAGNETIZING WINDING ON SAID CORE CONNECTED IN SHUNT TO SAID DIODE, A BIASING WINDING ON SAID CORE CONNECTED BETWEEN THE BASE OF THE TRANSISTOR AND SAID SERIES CIRCUIT, A SECOND MAGNETIZING WINDING ON SAID CORE, SAID MAGNETIZING WINDINGS BEING ARRANGED WHEN ENERGIZED TO MAGNETIZE SAID CORE IN OPPOSITE SENSES AND SAID BIASING WINDING BEING ARRANGED TO BIAS SAID TRANSISTOR TOWARD SATURATION WHEN SAID FIRST MAGNETIZING WINDING IS ENERGIZED AND TOWARD CUT-OFF WHEN SAID SECOND MAGNETIZING WINDING IS ENERGIZED.
Claim 2
Dependent Claim
122 words
A SWITCHING CIRCUIT COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, A DIODE, A POWER CIRCUIT INCLUDING SAID COLLECTOR-EMITTER ELECTRODES AND DIODE IN SERIES WITH THE DIODE POLED TO CONDUCT FORWARDLY WHEN THE TRANSISTOR ISCONDUCTING, A SQUARE LOOP SATURABLE TRANSFORMER CORE, A FIRST MAGNETIZING WINDING ON SAID CORE CONNECTED IN SHUNT TO SAID DIODE, A BIASING WINDING ON SAID CORE CONNECTED BETWEEN THE BASE OF THE TRANSISTOR AND SAID SERIES CIRCUIT, A SECOND MAGNETIZING WINDING ON SAID CORE, SAID MAGNETIZING WINDINGS BEING ARRANGED WHEN ENERGIZED TO MAGNETIZE SAID CORE IN OPPOSITE SENSES AND SAID BIASING WINDING BEING ARRANGED TO BIAS SAID TRANSISTOR TOWARD SATURATION WHEN SAID FIRST MAGNETIZING WINDING IS ENERGIZED AND TOWARD CUT-OFF WHEN SAID SECOND MAGNETIZING WINDING IS ENERGIZED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |