US3082381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gain control circuit
Assignee: Goodyear Aircraft Corp
•
Filing: 1959-05-27
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Granted: 1963-03-19
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Expires: 1979-05-27
Abstract
No abstract record available.
Inventors
- 👤 Charles D Morrill
- 👤 Robert C Weyrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:57
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0047; H03G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A DIRECT CURRENT AMPLIFIER HAVING A FEEDBACK CIRCUIT INCLUDING A RESISTOR HAVING RESISTANCE VARYING INVERSELY WITH ITS EXPOSURE TO LIGHT, A SOFT GAS FILLED TWO-ELEMENT LIGHT SOURCE, MEANS FOR SHIELDING SAID RESISTANCE FROM OTHER LIGHT SOURCES, AN INDEPENDENT GAIN CONTROLLING VOLTAGE SOURCE FOR CONTROLLING LIGHT EMANATION FROM SAID LIGHT SOURCE, POSITIVE AND NEGATIVE REFERENCE VOLTAGES APPLIED TO SAID LIGHT SOURCE TO SUSTAIN OPERATION OF SAID SOURCE WHEN SAID GAIN CONTROL VOLTAGE IS BELOW THE FIRING VOLTAGE THEREOF, DIODE MEANS FOR PREVENTING CURRENT FLOW FROM SAID POSITIVE REFERENCE VOLTAGE TO SAID GAIN CONTROLLING VOLTAGE SOURCE, AND MANUALLY ADJUSTABLE RESISTOR MEANS IN THE FEED BACK CIRCUIT FOR CONTROLLING THE GAIN OF THE AMPLIFIER.
Claim 2
Dependent Claim
111 words
A DIRECT CURRENT AMPLIFIER HAVING A FEEDBACK CIRCUIT INCLUDING A RESISTOR HAVING RESISTANCE VARYING INVERSELY WITH ITS EXPOSURE TO LIGHT, A SOFT GAS FILLED TWO-ELEMENT LIGHT SOURCE, MEANS FOR SHIELDING SAID RESISTANCE FROM OTHER LIGHT SOURCES, AN INDEPENDENT GAIN CONTROLLING VOLTAGE SOURCE FOR CONTROLLING LIGHT EMANATION FROM SAID LIGHT SOURCE, POSITIVE AND NEGATIVE REFERENCE VOLTAGES APPLIED TO SAID LIGHT SOURCE TO SUSTAIN OPERATION OF SAID SOURCE WHEN SAID GAIN CONTROL VOLTAGE IS BELOW THE FIRING VOLTAGE THEREOF, DIODE MEANS FOR PREVENTING CURRENT FLOW FROM SAID POSITIVE REFERENCE VOLTAGE TO SAID GAIN CONTROLLING VOLTAGE SOURCE, AND MANUALLY ADJUSTABLE RESISTOR MEANS IN THE FEED BACK CIRCUIT FOR CONTROLLING THE GAIN OF THE AMPLIFIER.
References Cited (Backward Citations)
US1843288A
Cited
FR818980A
Cited
US2212337A
Cited
US2208617A
Cited
US2231527A
Cited
US2343207A
Cited
US2283241A
Cited
US2293750A
Cited
GB611390A
Cited
US2691736A
Cited
US2745021A
Cited
US2739237A
Cited
DE1058559B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |