Patent US3374425A successfully refreshed from Google Patents.
US3374425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cascaded power supply for producing a clean d-c output
Assignee: United States Department of the Air Force
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Filing: 1966-05-19
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Granted: 1968-03-19
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Irving F Barditch
- 👤 Charles G Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:20
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/618
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A VOLTAGE REGULATING CIRCUIT FOR CONNECTION BETWEEN THE OUTPUT OF AN ALTERNATING CURRENT RECTIFIER AND A LOAD, SAID CIRCUIT COMPRISING: (A) THREE CASCADED SECTIONS WITH A SERIES INDUCTOR CONNECTED BETWEEN THE FIRST AND SECOND SECTIONS, COUNTING FROM THE RECTIFIER END OF THE CIRCUIT; (1) SAID FIRST SECTION COMPRISING (A) A SERIES FIXED RESISTANCE ELEMENT, (B) A SHUNT VARIABLE RESISTANCE ELEMENT LOCATED AT THE LOAD END OF SAID SERIES RESISTANCE ELEMENT, AND (C) MEANS SENSING THE VOLTAGE ACROSS SAID SHUNT RESISTANCE ELEMENT AND RESPONSIVE TO CHANGES IN SAID VOLTAGE AT THE RIPPLE FREQUENCY OF SAID RECTIFIER AND BELOW FOR PRODUCING CONVERSELY RELATED CHANGES IN THE RESISTANCE OF SAID SHUNT ELEMENT;
Claim 2
Dependent Claim
109 words
A VOLTAGE REGULATING CIRCUIT FOR CONNECTION BETWEEN THE OUTPUT OF AN ALTERNATING CURRENT RECTIFIER AND A LOAD, SAID CIRCUIT COMPRISING: (A) THREE CASCADED SECTIONS WITH A SERIES INDUCTOR CONNECTED BETWEEN THE FIRST AND SECOND SECTIONS, COUNTING FROM THE RECTIFIER END OF THE CIRCUIT; (1) SAID FIRST SECTION COMPRISING (A) A SERIES FIXED RESISTANCE ELEMENT, (B) A SHUNT VARIABLE RESISTANCE ELEMENT LOCATED AT THE LOAD END OF SAID SERIES RESISTANCE ELEMENT, AND (C) MEANS SENSING THE VOLTAGE ACROSS SAID SHUNT RESISTANCE ELEMENT AND RESPONSIVE TO CHANGES IN SAID VOLTAGE AT THE RIPPLE FREQUENCY OF SAID RECTIFIER AND BELOW FOR PRODUCING CONVERSELY RELATED CHANGES IN THE RESISTANCE OF SAID SHUNT ELEMENT;
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |