Patent US5936578A successfully refreshed from Google Patents.
US3171085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unilateralized transistor amplifier
Assignee: Individual
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Filing: 1959-05-19
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Granted: 1965-02-23
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Expires: 1979-05-19
Abstract
No abstract record available.
Inventors
- 👤 Lucio M Vallese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:24
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A TRANSISTOR AMPLIFIER CIRCUIT, IN COMBINATION; TRANSISTOR MEANS CORRESPONDING TO A PAIR OF COMPLEMENTARY-TYPE TRANSISTORS, EACH HAVING A BASE, EMITTER AND COLLECTOR ELECTRODE, CONNECTED IN A HOOK COMMON COLLECTOR CIRCUIT CONFIGURATION WHEREIN A SIGNAL IS FED BACK TO THE BASE OF ONE TRANSISTOR FROM THE COLLECTOR OF THE OTHER TRANSISTOR; IMPEDANCE MEANS CONNECTED IN THE EMITTER CIRCUIT OF SAID OTHER TRANSISTOR FOR CONTROLLING THE MAGNITUDE AND PHASE OF THE FEEDBACK SIGNAL, OF SUCH VALUE THAT THE FEEDBACK SIGNAL IS EQUAL IN MAGNITUDE AND OPPOSITE IN PHASE TO THE INTRINSIC FEEDBACK SIGNAL THROUGH SAID ONE TRANSISTOR, WHEREBY THE INTRINSIC FEEDBACK SIGNAL IS CANCELLED, SAID TRANSISTOR MEANS THEREBY BEING UNILATERALIZED BETWEEN THE BASE AND EMITTER OF SAID ONE TRANSISTOR; AND CONNECTION MEANS FOR A REFERENCE POTENTIAL, THE EMITTER CIRCUIT OF SAID ONE TRANSISTOR BEING RETURNED TO SAID REFERENCE POTENTIAL CONNECTION.
Claim 2
Dependent Claim
139 words
IN A TRANSISTOR AMPLIFIER CIRCUIT, IN COMBINATION; TRANSISTOR MEANS CORRESPONDING TO A PAIR OF COMPLEMENTARY-TYPE TRANSISTORS, EACH HAVING A BASE, EMITTER AND COLLECTOR ELECTRODE, CONNECTED IN A HOOK COMMON COLLECTOR CIRCUIT CONFIGURATION WHEREIN A SIGNAL IS FED BACK TO THE BASE OF ONE TRANSISTOR FROM THE COLLECTOR OF THE OTHER TRANSISTOR; IMPEDANCE MEANS CONNECTED IN THE EMITTER CIRCUIT OF SAID OTHER TRANSISTOR FOR CONTROLLING THE MAGNITUDE AND PHASE OF THE FEEDBACK SIGNAL, OF SUCH VALUE THAT THE FEEDBACK SIGNAL IS EQUAL IN MAGNITUDE AND OPPOSITE IN PHASE TO THE INTRINSIC FEEDBACK SIGNAL THROUGH SAID ONE TRANSISTOR, WHEREBY THE INTRINSIC FEEDBACK SIGNAL IS CANCELLED, SAID TRANSISTOR MEANS THEREBY BEING UNILATERALIZED BETWEEN THE BASE AND EMITTER OF SAID ONE TRANSISTOR; AND CONNECTION MEANS FOR A REFERENCE POTENTIAL, THE EMITTER CIRCUIT OF SAID ONE TRANSISTOR BEING RETURNED TO SAID REFERENCE POTENTIAL CONNECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |