US3716722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensation for logic circuits
Assignee: Cogar Corp
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Filing: 1970-04-29
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Granted: 1973-02-13
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Expires: 1990-04-29
Abstract
Abstract A TEMPERATURE COMPENSATION CIRCUIT FOR AN EMITTERCOUPLED CIRCUIT. INSTEAD OF USING A FIXED REFERENCE VOLTAGE, THE REFERENCE VOLTAGE IS DERIVED FROM VARIOUS ACTIVE DEVICES SUCH THAT IT VARIES WITH TEMPERATURE IN THE SAME MANNER AS THE INPUT SIGNAL LEVELS VARY WITH TEMPERATURE. BY CAUSING THE REFERENCE VOLTAGE TO CHANGE IN ACORDANCE WITH CHANGES IN TEMPERATURE, IT IS POSSIBLE TO DESIGN CIRCUITS WHICH HAVE SMALL SIGNAL SWINGS YET INTERFACE WITH EACH OTHER, AND ARE CAPABLE OF HIGH SWITCHING SPEEDS OVER RELATIVELY LARGE TEMPERATURE RANGES. D R A W I N G
Inventors
- 👤 R Bryant
- 👤 G Tu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:20
CPC Classifications
H; H03; H03K; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/086; H02; H02J; H02J7/00; H02J7/02; H02J7/90; H02J7/971; H02J7/975; H03K17/00; H03K17/30; H03K19/003; H03K19/00369; H03K19/00376; H02J2207/00; H02J2207/20
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |