US3090926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor amplifier with tunnel diode in emitter circuit
Assignee: Siemens Schuckertwerke AG
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Filing: 1961-07-13
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Granted: 1963-05-21
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Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Engel Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:18
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A TRANSISTOR AMPLIFIER, COMPRISING TWO VOLTAGE SUPPLY LEADS, A TRANSISTOR HAVING AN EMITTER CIRCUIT CONNECTED TO ONE OF SAID LEADS, A COLLECTOR CIRCUIT CONNECTED TO SAID OTHER LEAD, A NEGATIVE FEEDBACK COUPLING CONNECTED IN SAID EMITTER CIRCUIT AND COMPRISING AN OHMIC RESISTOR AND A TUNNEL DIODE CONNECTED IN PARALLEL TO SAID RESISTOR, SAID TUNNEL DIODE HAVING A CURRENT-VOLTAGE CHARACTERISTIC WITH A NEGATIVE PORTION, AND SAID RESISTOR HAVING A LINEAR CURRENT-VOLTAGE CHARACTERISTIC MATCHED TO SAID TUNNEL DIODE CHARACTERISTIC SO AS TO INTERSECT SAID NEGATIVE PORTION, A BASE ON SAID TRANSISTOR FOR RECEIVING AN INPUT SIGNAL VOLTAGE APPLIED TO SAID BASE AND SAID FEEDBACK COUPLING.
Claim 2
Dependent Claim
103 words
A TRANSISTOR AMPLIFIER, COMPRISING TWO VOLTAGE SUPPLY LEADS, A TRANSISTOR HAVING AN EMITTER CIRCUIT CONNECTED TO ONE OF SAID LEADS, A COLLECTOR CIRCUIT CONNECTED TO SAID OTHER LEAD, A NEGATIVE FEEDBACK COUPLING CONNECTED IN SAID EMITTER CIRCUIT AND COMPRISING AN OHMIC RESISTOR AND A TUNNEL DIODE CONNECTED IN PARALLEL TO SAID RESISTOR, SAID TUNNEL DIODE HAVING A CURRENT-VOLTAGE CHARACTERISTIC WITH A NEGATIVE PORTION, AND SAID RESISTOR HAVING A LINEAR CURRENT-VOLTAGE CHARACTERISTIC MATCHED TO SAID TUNNEL DIODE CHARACTERISTIC SO AS TO INTERSECT SAID NEGATIVE PORTION, A BASE ON SAID TRANSISTOR FOR RECEIVING AN INPUT SIGNAL VOLTAGE APPLIED TO SAID BASE AND SAID FEEDBACK COUPLING.
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) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |