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Patent US3562673A successfully refreshed from Google Patents.
US3562673A
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Pulse width modulation to amplitude modulation conversion circuit which minimizes the effects of aging and temperature drift
Assignee: Allen Bradley Co LLC
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Filing: 1968-08-16
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Granted: 1971-02-09
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Expires: 1988-08-16
Abstract
Abstract THE ADVERSE EFFECTS ON THE OPERATION OF A PULSE WIDTH MODULATION TO AMPLITUDE MODULATION CONVERSION CIRCUIT CAUSED BY NOISE SIGNALS AND CHANGES IN TEMPERATURE ARE CONSIDERABLY MINIMIZED BY THE INSERTION OF CIRCUITRY, IN ACCORDANCE WITH THIS INVENTION, INTO THE DRIVING CIRCUIT OF SAID PULSE WIDTH MODULATION TO AMPLITUDE MODULATION CONVERSION CIRCUIT.
Inventors
- 👤 Frederick W Caspari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:39
CPC Classifications
H; H03; H03K; H03K9/00; H03K9/08
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |