Patent US3210683A successfully refreshed from Google Patents.
US3210683A
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Variable gain circuit arrangements
Assignee: BAE Systems Electronics Ltd
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Filing: 1961-12-21
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Granted: 1965-10-05
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Expires: 1981-12-21
Abstract
No abstract record available.
Inventors
- 👤 Pay Donald Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:44
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/265; H03; H03G; H03G1/00; H03G1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A VARIABLE GAIN CIRCUIT ARRANGEMENT INCLUDING THREE SIGNAL CONTROLLABLE AMPLIFIER DEVICES, TWO OF WHICH HAVE A COMMON CATHODE CONNECTION AND ARE CONNECTED IN SERIES WITH THE THIRD DEVICE TO PROVIDE TWO ALTERNATIVE PATHS FOR SIGNALS FROM THE THIRD DEVICE, MEANS FOR APPLYING INPUT SIGNALS TO BE AMPLIFIED TO AN IMPUT TERMINAL OF SAID THIRD DEVICE, GAIN CONTROL MEANS CONNECTED TO AT LEAST ONE OF SAID TWO AMPLIFIER DEVICES FOR CONTROLLING, IN DEPENDENCE ON DESIRED GAIN, THE RELATIVE INTERNAL IMPEDANCE OF SAID TWO DEVICES AND MEANS FOR TAKING OFF GAIN CONTROLLED OUTPUT SIGNALS EXCLUSIVELY FROM ONE OF SAID TWO DEVICES.
Claim 2
Dependent Claim
99 words
A VARIABLE GAIN CIRCUIT ARRANGEMENT INCLUDING THREE SIGNAL CONTROLLABLE AMPLIFIER DEVICES, TWO OF WHICH HAVE A COMMON CATHODE CONNECTION AND ARE CONNECTED IN SERIES WITH THE THIRD DEVICE TO PROVIDE TWO ALTERNATIVE PATHS FOR SIGNALS FROM THE THIRD DEVICE, MEANS FOR APPLYING INPUT SIGNALS TO BE AMPLIFIED TO AN IMPUT TERMINAL OF SAID THIRD DEVICE, GAIN CONTROL MEANS CONNECTED TO AT LEAST ONE OF SAID TWO AMPLIFIER DEVICES FOR CONTROLLING, IN DEPENDENCE ON DESIRED GAIN, THE RELATIVE INTERNAL IMPEDANCE OF SAID TWO DEVICES AND MEANS FOR TAKING OFF GAIN CONTROLLED OUTPUT SIGNALS EXCLUSIVELY FROM ONE OF SAID TWO DEVICES.
References Cited (Backward Citations)
US2702857A
Cited
GB672256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |