US3315094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gated limiter circuit
Assignee: Nortel Networks Ltd
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Filing: 1964-01-13
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Granted: 1967-04-18
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 Mills Frank Wilton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A GATED LIMITER CIRCUIT COMPRISING A PAIR OF INPUT TERMINALS FOR CONNECTING AN INPUT SIGNAL THERETO, A PAIR OF OUTPUT TERMINALS FOR CONNECTING AN OUTPUT SIGNAL THEREFROM, A TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, A SOURCE OF OPERATING POTENTIAL FOR SAID TRANSISTOR, MEANS FOR COUPLING THE INPUT SIGNAL FROM SAID INPUT TERMINALS TO THE BASE ELECTRODE, A DEGENERATIVE FEEDBACK RESISTOR CONNECTED BETWEEN SAID EMITTER ELECTRODE AND ONE TERMINAL OF SAID SOURCE, A DIRECT CURRENT ISOLATED VARISTOR CONNECTED IN SHUNT WITH SAID RESISTOR, A LOAD CIRCUIT CONNECTED BETWEEN SAID COLLECTOR ELECTRODE AND THE OTHER TERMINAL OF SAID SOURCE, SAID LOAD CIRCUIT INCLUDING RECTIFIER MEANS FOR PRODUCING A DIRECT CURRENT CONTROL VOLTAGE WHICH IS PROPORTIONAL TO THE AMPLITUDE OF THE INPUT SIGNAL COUPLED FROM SAID TRANSISTOR TO SAID LOAD CIRCUIT, AND A GATE CIRCUIT RESPONSIVE TO THE DIRECT CURRENT CONTROL VOLTAGE FOR COUPLING THE OUTPUT SIGNAL WHICH APPEARS ACROSS SAID VARISTOR TO SAID OUTPUT TERMINALS WHEN SAID CONTROL VOLTAGE IS GREATER THAN A PREDETERMINED LEVEL.
Claim 2
Dependent Claim
164 words
A GATED LIMITER CIRCUIT COMPRISING A PAIR OF INPUT TERMINALS FOR CONNECTING AN INPUT SIGNAL THERETO, A PAIR OF OUTPUT TERMINALS FOR CONNECTING AN OUTPUT SIGNAL THEREFROM, A TRANSISTOR HAVING BASE, COLLECTOR AND EMITTER ELECTRODES, A SOURCE OF OPERATING POTENTIAL FOR SAID TRANSISTOR, MEANS FOR COUPLING THE INPUT SIGNAL FROM SAID INPUT TERMINALS TO THE BASE ELECTRODE, A DEGENERATIVE FEEDBACK RESISTOR CONNECTED BETWEEN SAID EMITTER ELECTRODE AND ONE TERMINAL OF SAID SOURCE, A DIRECT CURRENT ISOLATED VARISTOR CONNECTED IN SHUNT WITH SAID RESISTOR, A LOAD CIRCUIT CONNECTED BETWEEN SAID COLLECTOR ELECTRODE AND THE OTHER TERMINAL OF SAID SOURCE, SAID LOAD CIRCUIT INCLUDING RECTIFIER MEANS FOR PRODUCING A DIRECT CURRENT CONTROL VOLTAGE WHICH IS PROPORTIONAL TO THE AMPLITUDE OF THE INPUT SIGNAL COUPLED FROM SAID TRANSISTOR TO SAID LOAD CIRCUIT, AND A GATE CIRCUIT RESPONSIVE TO THE DIRECT CURRENT CONTROL VOLTAGE FOR COUPLING THE OUTPUT SIGNAL WHICH APPEARS ACROSS SAID VARISTOR TO SAID OUTPUT TERMINALS WHEN SAID CONTROL VOLTAGE IS GREATER THAN A PREDETERMINED LEVEL.
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |