US3564389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ac to dc converter
Assignee: Individual
•
Filing: 1969-05-16
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Granted: 1971-02-16
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Expires: 1989-05-16
Abstract
Abstract THIS IS A SYSTEM FOR CONVERTING A TIME-VARYING SIGNAL INTO A SUBSTANTIALLY STEADY-STATE OUTPUT TYPICALLY THE RMS VALUE OF THE ORIGINAL SIGNAL. THE SYSTEM INCLUDES A CIRCUIT FOR PROVIDING THE ABSOLUTE VALUE OF THE INPUT SIGNAL, AND A GAIN CIRCUIT WHICH PROVIDES A GAIN DIRECTLY PROPORTIONAL TO THE ABSOLUTE VALUE AND INVERSELY PROPORTIONAL TO THE RMS VALUE. THE OUTPUT OF THE LATTER IS THEN AVERAGED TO PROVIDE RMS. PREFERABLY, THE GAIN CIRCUIT OPERATES BY CLIPPING PROPORTIONED OR SCALED ABSOLUTE SIGNALS AT A PLURALITY OF LEVELS DETERMINED AS PROPORTIONS OF THE STEADY-STATE OUTPUT, AND THE RESULTING CLIPPED VALUES ARE SUMMED TOGETHER.
Inventors
- 👤 Peter L Richman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:24
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/02; G06; G06G; G06G7/00; G06G7/12; G06G7/20; G06G7/25
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |