Patent US3448293A successfully refreshed from Google Patents.
US3448293A
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Field effect switching circuit
Assignee: Schneider Electric Systems USA Inc
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Filing: 1966-10-07
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Granted: 1969-06-03
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Expires: 1986-10-07
Abstract
No abstract record available.
Inventors
- 👤 Douglas D Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:50
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/04; H03K17/51; H03K17/56; H03K17/687; H03K17/6877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A FIELD EFFECT TRANSISTOR SWITCHING CIRCUIT FOR ANALOG SIGNALS COMPRISING: A SIGNAL INPUT TERMINAL AND A SIGNAL OUTPUT TERMINAL, A FIRST ELECTRICAL POTENTIAL AND A SECOND ELECTRICAL POTENTIAL, A FIRST FELD EFFECT TRANSISTOR OF A FIRST CHANNEL TYPE HAVING ITS SOURCE AND DRAIN ELEMENTS INTERCONNECTED IN SERIES BETWEEN SAID SIGNAL INPUT TERMINAL AND SAID SIGNAL OUTPUT TERMINAL, A SECOND FIELD EFFECT TRANSISTOR HAVING AN OPPOSITE TYPE TO THAT OF SAID FIRST TRANSISTOR HAVING ITS GATE ELEMENT RESPONSIVE TO SAID SIGNAL INPUT TERMINAL AND HAVING ITS SOURCE AND DRAIN ELEMENTS INTEROCNNECTED BETWEEN SAID FIRST ELECTRICAL POTENTIAL AND THE GATE OF SAID FIRST TRANSISTOR, AND A RESISTANCE INTERCONNECTED BETWEEN SAID SECOND ELECTRICAL POTENTIAL AND SAID GATE OF SAID FIRST TRANSISTOR.
Claim 2
Dependent Claim
118 words
A FIELD EFFECT TRANSISTOR SWITCHING CIRCUIT FOR ANALOG SIGNALS COMPRISING: A SIGNAL INPUT TERMINAL AND A SIGNAL OUTPUT TERMINAL, A FIRST ELECTRICAL POTENTIAL AND A SECOND ELECTRICAL POTENTIAL, A FIRST FELD EFFECT TRANSISTOR OF A FIRST CHANNEL TYPE HAVING ITS SOURCE AND DRAIN ELEMENTS INTERCONNECTED IN SERIES BETWEEN SAID SIGNAL INPUT TERMINAL AND SAID SIGNAL OUTPUT TERMINAL, A SECOND FIELD EFFECT TRANSISTOR HAVING AN OPPOSITE TYPE TO THAT OF SAID FIRST TRANSISTOR HAVING ITS GATE ELEMENT RESPONSIVE TO SAID SIGNAL INPUT TERMINAL AND HAVING ITS SOURCE AND DRAIN ELEMENTS INTEROCNNECTED BETWEEN SAID FIRST ELECTRICAL POTENTIAL AND THE GATE OF SAID FIRST TRANSISTOR, AND A RESISTANCE INTERCONNECTED BETWEEN SAID SECOND ELECTRICAL POTENTIAL AND SAID GATE OF SAID FIRST TRANSISTOR.
References Cited (Backward Citations)
US3378779A
Cited
US3386053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |