US3230468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for compensating a transistor for thermal variations in its operating point
Assignee: NEXUS RES LAB Inc
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Filing: 1962-12-24
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Granted: 1966-01-18
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Expires: 1982-12-24
Abstract
No abstract record available.
Inventors
- 👤 Alan R Pearlman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:47
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/302; H03F3/00; H03F3/45; H03F3/45071; H03F3/45479; H03F3/45484; H03F3/45547; H03F3/45551; H03F3/4556; H03F2203/00; H03F2203/45; H03F2203/45008; H03F2203/45072; H03F2203/45078; H03F2203/45418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN APPARATUS FOR PROVIDING COMPENSATION OF THERMALLY CAUSED VARIATIONS IN THE OPERATION OF A FIRST TRANSISTOR ADAPTED TO HAVE INPUT SIGNALS APPLIED TO THE BASE THEREOF, SAID APPARATUS COMPRISING, IN COMBINATION: A COMPENSATING TRANSISTOR OF THE SAME CONDUCTIVITY TYPE AS SAID FIRST TRANSISTOR AND HAVING THERMALLY VARIABLE CHARACTERISTICS SUBSTANTIALLY MATCHED TO THE THERMALLY VARIABLE CHARACTERISTICS OF SAID FIRST TRANSISTOR; MEANS CONNECTED TO THE COLLECTOR OF SAID COMPENSATING TRANSISTOR FOR PROVIDING A SUBSTANTIALLY CONSTANT CURRENT THERETO; A FEEDBACK LOOP COUPLING THE BASE AND COLLECTOR OF SAID COMPENSATING TRANSISTOR FOR PROVIDING A THERMALLY VARIABLE VOLTAGE FOR DRIVING THROUGH THE BASE
Claim 2
Independent Claim
98 words
AN APPARATUS FOR PROVIDING COMPENSATION OF THERMALLY CAUSED VARIATIONS IN THE OPERATION OF A FIRST TRANSISTOR ADAPTED TO HAVE INPUT SIGNALS APPLIED TO THE BASE THEREOF, SAID APPARATUS COMPRISING, IN COMBINATION: A COMPENSATING TRANSISTOR OF THE SAME CONDUCTIVITY TYPE AS SAID FIRST TRANSISTOR AND HAVING THERMALLY VARIABLE CHARACTERISTICS SUBSTANTIALLY MATCHED TO THE THERMALLY VARIABLE CHARACTERISTICS OF SAID FIRST TRANSISTOR; MEANS CONNECTED TO THE COLLECTOR OF SAID COMPENSATING TRANSISTOR FOR PROVIDING A SUBSTANTIALLY CONSTANT CURRENT THERETO; A FEEDBACK LOOP COUPLING THE BASE AND COLLECTOR OF SAID COMPENSATING TRANSISTOR FOR PROVIDING A THERMALLY VARIABLE VOLTAGE FOR DRIVING THROUGH THE BASE
References Cited (Backward Citations)
US2929997A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |