US3471718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hysteresis control for a schmitt trigger circuit
Assignee: US Philips Corp
•
Filing: 1966-03-24
•
Granted: 1969-10-07
•
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 01:53
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)
US3123721A
Cited
US2987632A
Cited
US3324309A
Cited
US3249767A
Cited
US3317908A
Cited
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 |