US3559040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching type voltage regulator utilizing pnpn diodes to reduce switching transition time
Assignee: AT&T Inc
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Filing: 1969-08-27
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Granted: 1971-01-26
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Expires: 1989-08-27
Abstract
Abstract A SWITCHING TYPE VOLTAGE REGULATORY INCLUDES BISTABLE DEVICES IN THE REGENERATIVE CIRCUIT WHICH CONTROLS THE SWITCHING OF THE SWITCHING DEVICE OF THE REGULATOR. THE BISTABLE DEVICES RAPIDLY TRANSFER BIAS VOLTAGES FROM THE STORAGE DEVICE IN THE REGENERATIVE CIRCUIT TO THE SWITCHING DEVICE TO REDUCE ITS SWITCHING TRANSITION TIME AND THEREFORE REDUCE POWER CONSUMPTION THEREIN.
Inventors
- 👤 Hermann Fickenscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:14
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |