US3374362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operational amplifier with mode control switches
Assignee: Racal Data Communications Inc
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Filing: 1965-12-10
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Granted: 1968-03-19
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Expires: 1985-12-10
Abstract
No abstract record available.
Inventors
- 👤 Monroe A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024; G11C27/026; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
IN AN OPERATIONAL AMPLIFIER CIRCUIT THE COMBINATION WHICH COMPRISES: (A) AN OPERATIONAL AMPLIFIER HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT, (B) FIRST AND SECOND AMPLIFIER INPUT TERMINALS FOR RECEIVING INPUT SIGNALS TO BE SELECTIVELY APPLIED TO THE AMPLIFIER INPUT CIRCUIT, (C) A PLURALITY OF MODE CONTROL SWITCHES (D) EACH MODE CONTROL SWITCH HAVING AN INPUT TERMINAL, FIRST AND SECOND OUTPUT TERMINALS AND A CONTROL TERMINAL AND BEING ARRANGED TO SELECTIVELY CONNECT THE INPUT TERMINAL THEREOF TO THE FIRST AND SECOND OUTPUT TERMINALS IN RESPONSE TO THE APPLICATION OF FIRST AND SECOND CONTROL SIGNALS, RESPECTIVELY, TO THE CONTROL TERMINAL, (E) THE FIRST OUTPUT TERMINAL OF EACH SWITCH BEING CONNECTED TO THE INPUT CIRCUIT OF THE AMPLIFIER, (F) THE SECOND OUTPUT TERMINAL OF EACH SWITCH BEING CONNECTED TO GROUND POTENTIAL, (G) A SEPARATE FEEDBACK IMPEDANCE CONNECTED BETWEEN THE AMPLIFIER OUTPUT CIRCUIT AND THE INPUT TERMINALS OF THE FIRST AND SECOND SWITCHES,
Claim 2
Dependent Claim
150 words
IN AN OPERATIONAL AMPLIFIER CIRCUIT THE COMBINATION WHICH COMPRISES: (A) AN OPERATIONAL AMPLIFIER HAVING AN INPUT CIRCUIT AND AN OUTPUT CIRCUIT, (B) FIRST AND SECOND AMPLIFIER INPUT TERMINALS FOR RECEIVING INPUT SIGNALS TO BE SELECTIVELY APPLIED TO THE AMPLIFIER INPUT CIRCUIT, (C) A PLURALITY OF MODE CONTROL SWITCHES (D) EACH MODE CONTROL SWITCH HAVING AN INPUT TERMINAL, FIRST AND SECOND OUTPUT TERMINALS AND A CONTROL TERMINAL AND BEING ARRANGED TO SELECTIVELY CONNECT THE INPUT TERMINAL THEREOF TO THE FIRST AND SECOND OUTPUT TERMINALS IN RESPONSE TO THE APPLICATION OF FIRST AND SECOND CONTROL SIGNALS, RESPECTIVELY, TO THE CONTROL TERMINAL, (E) THE FIRST OUTPUT TERMINAL OF EACH SWITCH BEING CONNECTED TO THE INPUT CIRCUIT OF THE AMPLIFIER, (F) THE SECOND OUTPUT TERMINAL OF EACH SWITCH BEING CONNECTED TO GROUND POTENTIAL, (G) A SEPARATE FEEDBACK IMPEDANCE CONNECTED BETWEEN THE AMPLIFIER OUTPUT CIRCUIT AND THE INPUT TERMINALS OF THE FIRST AND SECOND SWITCHES,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |