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Patent US3713013A successfully refreshed from Google Patents.
US3713013A
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US
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Voltage controlled inverter circuit for variable supply voltages and loads
Assignee: PROGRAMMED POWER
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Filing: 1972-04-12
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Granted: 1973-01-23
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Expires: 1992-04-12
Abstract
Abstract AN INVERTER CIRCUIT INCLUDES A PAIR OF POWER SCR''S WITH INVERSE PARALLEL CONNECTED CONTROL SCR''S. THE FIRING TIME OF THE CONTROL SCR''S ARE VARIED WITH RESPECT TO THE POWER SCR''S IN ACCORDANCE WITH VARIATIONS IN SUPPLY VOLTAGE AND LOAD TO ALLOW A GREATER OR LESSER OSCILLATORY VOLTAGE IN THE POWER SCR RESONANT CIRCUIT.
Inventors
- 👤 E Phillips
- 👤 R Underwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:43
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/525
Claims Analysis
Total Claims: 0
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |