US3243683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current converter with voltage multiplication
Assignee: Varian Medical Systems Inc
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Filing: 1961-11-29
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Granted: 1966-03-29
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 James W Ackley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:23
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M3/338; H02M3/3382; H02M3/3384; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10; H02M7/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
231 words
A DIRECT CURRENT TO DIRECT CURRENT CONVERTER, COMPRISING IN COMBINATION, A MULTIVIBRATOR COMPRISING A PAIR OF ALTERNATELY CONDUCTION TRANSISTORS, EACH OF SAID TRANSISTORS HAVING A COLLECTOR, BASE AND EMITTER ELECTRODE; A SATURABLE TRANSFORMER HAVING AT LEAST TWO PRIMARY WINDINGS AND AT LEAST SECONDARY WINDINGS; THE COLLECTORS OF SAID TRANSISTORS BEING CONNECTED TO OPPOSITE ENDS OF SAID FIRST PRIMARY WINDING, THE BASES OF SAID TRANSISTORS BEING CONNECTED TO BE OPPOSITE ENDS OF SAID SECOND PRIMARY WINDINGS, SAID PRIMARY WINDINGS BEING ORIENTED TO CONDUCT CURRENT IN THE SAME DIRECTION; A DIRECT CURRENT SOURCE CONNECTED TO THE EMITTERS OF SAID TRANSISTORS AND IN SERIES BETWEEN THE MIDPOINT OF SAID FIRST PRIMARY WINDING AND THE MIDPOINT OF SAID SECOND PIRMARY WINDINGS; A VOLTAGE MULTIPLIER CIRCUIT CONNECTED TO EACH SECONDARY WINDING FOR MULTIPLYING AND RECTIFYING THE VOLTAGE INDUCED IN SAID SECONDARY WINDING, SAID SECONDARY WINDINGS BEING ORIENTED TO CONDUCT CURRENT IN OPPOSITE DIRECTIONS, SAID VOLTAGE MULTIPLIER CIRCUIT INCLUDING A FIRST CAPACITOR AND A FIRST DIODE CONNECTED IN PARALLEL WITH SAID SECONDARY WINDING, A SERIES CIRCUIT INCLUDING A SECOND AND THIRD DIODE AND A SECOND CAPACITOR CONNECTED IN PARALLEL WITH SAID FIRST CAPACITOR, A THIRD CAPACITOR CONNECTED BETWEEN THE JUNCTION OF SAID SECOND AND THIRD DIODE AND THE JUNCTION OF SAID SECONDARY WINDING AND SAID FIRST DIODE, AND A SERIES CONNECTED CIRCUIT INCLUDING A FOURTH DIODE AND A FOURTH CAPACITOR CONNECTED IN PARALLEL WITH SAID SECOND DIODE.
Claim 2
Dependent Claim
231 words
A DIRECT CURRENT TO DIRECT CURRENT CONVERTER, COMPRISING IN COMBINATION, A MULTIVIBRATOR COMPRISING A PAIR OF ALTERNATELY CONDUCTION TRANSISTORS, EACH OF SAID TRANSISTORS HAVING A COLLECTOR, BASE AND EMITTER ELECTRODE; A SATURABLE TRANSFORMER HAVING AT LEAST TWO PRIMARY WINDINGS AND AT LEAST SECONDARY WINDINGS; THE COLLECTORS OF SAID TRANSISTORS BEING CONNECTED TO OPPOSITE ENDS OF SAID FIRST PRIMARY WINDING, THE BASES OF SAID TRANSISTORS BEING CONNECTED TO BE OPPOSITE ENDS OF SAID SECOND PRIMARY WINDINGS, SAID PRIMARY WINDINGS BEING ORIENTED TO CONDUCT CURRENT IN THE SAME DIRECTION; A DIRECT CURRENT SOURCE CONNECTED TO THE EMITTERS OF SAID TRANSISTORS AND IN SERIES BETWEEN THE MIDPOINT OF SAID FIRST PRIMARY WINDING AND THE MIDPOINT OF SAID SECOND PIRMARY WINDINGS; A VOLTAGE MULTIPLIER CIRCUIT CONNECTED TO EACH SECONDARY WINDING FOR MULTIPLYING AND RECTIFYING THE VOLTAGE INDUCED IN SAID SECONDARY WINDING, SAID SECONDARY WINDINGS BEING ORIENTED TO CONDUCT CURRENT IN OPPOSITE DIRECTIONS, SAID VOLTAGE MULTIPLIER CIRCUIT INCLUDING A FIRST CAPACITOR AND A FIRST DIODE CONNECTED IN PARALLEL WITH SAID SECONDARY WINDING, A SERIES CIRCUIT INCLUDING A SECOND AND THIRD DIODE AND A SECOND CAPACITOR CONNECTED IN PARALLEL WITH SAID FIRST CAPACITOR, A THIRD CAPACITOR CONNECTED BETWEEN THE JUNCTION OF SAID SECOND AND THIRD DIODE AND THE JUNCTION OF SAID SECONDARY WINDING AND SAID FIRST DIODE, AND A SERIES CONNECTED CIRCUIT INCLUDING A FOURTH DIODE AND A FOURTH CAPACITOR CONNECTED IN PARALLEL WITH SAID SECOND DIODE.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |