Patent US3471718A successfully refreshed from Google Patents.
US3471718A
Expired / Lapsed
US
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Hysteresis control for a schmitt trigger circuit
Assignee: US Philips Corp
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Filing: 1966-03-24
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Granted: 1969-10-07
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Expires: 1986-03-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas Weisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:59
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/2893
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A TRIGGER CIRCUIT COMPRISING MEANS FOR DEFINING A BISTABLE TRIGGER CIRCUIT INCLUDING CASCADED ATERNATELY SWITCHED FIRST AND SECOND AMPLIFYING MEANS EACH HAVING A COMMON ELECTRODE COUPLED TOGETHER, A COMMON IMPEDANCE COUPLED TO SAID COMMON ELECTRODES, AND MEANS FOR COMPENSATING HYSTERESIS EFFECTS IN SAID TRIGGER CIRCUIT COMPRISING A TIME DELAY MEANS HAVING A TIME DELAY GREATER THAN THE SWITCHING SPEED OF SAID FIRST AND SECOND AMPLIFYING MEANS AND HAVING AN OUTPUT AND HAVING AN INPUT COUPLED
Claim 2
Dependent Claim
75 words
A TRIGGER CIRCUIT COMPRISING MEANS FOR DEFINING A BISTABLE TRIGGER CIRCUIT INCLUDING CASCADED ATERNATELY SWITCHED FIRST AND SECOND AMPLIFYING MEANS EACH HAVING A COMMON ELECTRODE COUPLED TOGETHER, A COMMON IMPEDANCE COUPLED TO SAID COMMON ELECTRODES, AND MEANS FOR COMPENSATING HYSTERESIS EFFECTS IN SAID TRIGGER CIRCUIT COMPRISING A TIME DELAY MEANS HAVING A TIME DELAY GREATER THAN THE SWITCHING SPEED OF SAID FIRST AND SECOND AMPLIFYING MEANS AND HAVING AN OUTPUT AND HAVING AN INPUT COUPLED
References Cited (Backward Citations)
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US3281608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |