US3077566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor operational amplifier
Assignee: MOUROE ELECTRONIES Inc
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Filing: 1961-06-01
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Granted: 1963-02-12
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Robert E Vosteen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:24
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A DIRECT CURRENT DIFFERENTIAL AMPLIFIER ARRANGED FOR NEGATIVE FEEDBACK BETWEEN OUTPUT AND INPUT COMPRISING A FIRST AND SECOND TRANSISTOR EACH OF ONE POLARITY, A THIRD TRANSISTOR OF OPPOSITE POLARITY, INPUT TERMINALS FOR SUPPLYING DIFFERENTIAL INPUTS TO THE BASES OF SAID FIRST AND SECOND TRANSISTORS, POSITIVE AND NEGATIVE SUPPLY TERMINALS FOR CONNECTION TO A SUITABLE SOURCE OF D.-C. VOLTAGE, MEANS CONNECTING THE EMITTERS OF EACH OF SAID FIRST AND SECOND TRANSISTORS TO ONE OF SAID SUPPLY TERMINALS, DIRECT CONNECTIONS BETWEEN THE COLLECTOR OF SAID FIRST TRANSISTOR AND THE BASE OF SAID THIRD TRANSISTOR AND BETWEEN THE COLLECTORS OF SAID SECOND AND THIRD TRANSISTORS, AND MEANS CONNECTING THE COLLECTOR OF SAID FIRST TRANSISTOR AND THE EMITTER OF SAID THIRD TRANSISTOR TO THE OTHER SUPPLY TERMINAL, THE OUTPUT OF THE AMPLIFIER BEING AVAILABLE BETWEEN THE COLLECTORS OF SAID SECOND AND THIRD TRANSISTORS AND A POINT OF COMMON POTENTIAL.
Claim 2
Dependent Claim
145 words
A DIRECT CURRENT DIFFERENTIAL AMPLIFIER ARRANGED FOR NEGATIVE FEEDBACK BETWEEN OUTPUT AND INPUT COMPRISING A FIRST AND SECOND TRANSISTOR EACH OF ONE POLARITY, A THIRD TRANSISTOR OF OPPOSITE POLARITY, INPUT TERMINALS FOR SUPPLYING DIFFERENTIAL INPUTS TO THE BASES OF SAID FIRST AND SECOND TRANSISTORS, POSITIVE AND NEGATIVE SUPPLY TERMINALS FOR CONNECTION TO A SUITABLE SOURCE OF D.-C. VOLTAGE, MEANS CONNECTING THE EMITTERS OF EACH OF SAID FIRST AND SECOND TRANSISTORS TO ONE OF SAID SUPPLY TERMINALS, DIRECT CONNECTIONS BETWEEN THE COLLECTOR OF SAID FIRST TRANSISTOR AND THE BASE OF SAID THIRD TRANSISTOR AND BETWEEN THE COLLECTORS OF SAID SECOND AND THIRD TRANSISTORS, AND MEANS CONNECTING THE COLLECTOR OF SAID FIRST TRANSISTOR AND THE EMITTER OF SAID THIRD TRANSISTOR TO THE OTHER SUPPLY TERMINAL, THE OUTPUT OF THE AMPLIFIER BEING AVAILABLE BETWEEN THE COLLECTORS OF SAID SECOND AND THIRD TRANSISTORS AND A POINT OF COMMON POTENTIAL.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |