US3555402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current temperature stabilized signal converter circuit
Assignee: Honeywell Inc
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Filing: 1968-12-18
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Granted: 1971-01-12
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Expires: 1988-12-18
Abstract
Abstract A DIFFERENTIAL AMPLIFIER IS DISCLOSED WHEREIN A CONSTANTCURRENT SOURCE IS PROVIDED WHICH IS REFERRED ONLY TO THE POWER-SUPPLY LEADS. FROM THE CONSTANT-CURRENT SOURCE, BIAS SIGNALS ARE DERIVED WHICH, IN TURN, PROVIDE AD CONTROL CONSTANT-CURRENT SUPPLY MEANS FOR EACH OF THE TWO LEGS OF THE DIFFERENTIAL AMPLIFIER, INDIVIDUALLY. THIS ARRANGEMENT PROVIDES A HIGHLY STABLE, HIGHLY ACCURATE AMPLIFICATION OF INPUT SIGNALS AND MINIMIZES ERRORS DUE TO AMBIENT TEMPERATURE CHANGES.
Inventors
- 👤 Theodore B Bozarth Jr
- 👤 Edward T E Hurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:45
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/4508; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; G05F1/567; H03F3/45479
Claims Analysis
Total Claims: 0
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |