US3302128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled rectifier relaxation oscillator
Assignee: Hoffman Electronics Corp
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Filing: 1964-11-18
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Granted: 1967-01-31
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Henry F Schoemehl
- 👤 Jacques A Tazartes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A PULSE GENERATING CIRCUIT COMPRISING: A LOAD, FIRST RESISTANCE MEANS; A CONTROLLED RECTIFIER; CIRCUIT MEANS COUPLING SAID FIRST RESISTANCE MEANS, SAID LOAD AND SAID CONTROLLED RECTIFIER IN A SERIES CIRCUIT; FIRST CAPACITOR MEANS COUPLED IN PARALLEL WITH SAID LOAD AND SAID CONTROLLED RECTIFIER; SECOND RESISTANCE MEANS; SECOND CAPACITOR MEANS; CIRCUIT MEANS COUPLING SAID SECOND RESISTANCE MEANS AND SAID SECOND CAPACITOR MEANS IN A SERIES CIRCUIT IN PARALLEL WITH SAID FIRST CAPACITOR MEANS; A ZENER DIODE HAVING A PAIR OF LEADS COUPLED BETWEEN THE JUNCTION OF SAID SECOND RESISTANCE MEANS AND SAID SECOND CAPACITOR MEANS AND THE GATE OF SAID CONTROLLED RECTIFIER FOR CAUSING SAID RECTIFIER TO BECOME CONDUCTIVE WHEN THE VOLTAGE ACROSS SAID SECOND CAPACITOR MEANS EXCEEDS A PREDETERMINED VALUE WHEREBY SAID FIRST CAPACITOR MEANS DISCHARGES THROUGH SAID LOAD AND SAID CONTROLLED RECTIFIER; AND MEANS FOR COUPLING SAID FIRST NAMED SERIES CIRCUIT TO A SOURCE OF D.C. VOLTAGE.
Claim 2
Dependent Claim
148 words
A PULSE GENERATING CIRCUIT COMPRISING: A LOAD, FIRST RESISTANCE MEANS; A CONTROLLED RECTIFIER; CIRCUIT MEANS COUPLING SAID FIRST RESISTANCE MEANS, SAID LOAD AND SAID CONTROLLED RECTIFIER IN A SERIES CIRCUIT; FIRST CAPACITOR MEANS COUPLED IN PARALLEL WITH SAID LOAD AND SAID CONTROLLED RECTIFIER; SECOND RESISTANCE MEANS; SECOND CAPACITOR MEANS; CIRCUIT MEANS COUPLING SAID SECOND RESISTANCE MEANS AND SAID SECOND CAPACITOR MEANS IN A SERIES CIRCUIT IN PARALLEL WITH SAID FIRST CAPACITOR MEANS; A ZENER DIODE HAVING A PAIR OF LEADS COUPLED BETWEEN THE JUNCTION OF SAID SECOND RESISTANCE MEANS AND SAID SECOND CAPACITOR MEANS AND THE GATE OF SAID CONTROLLED RECTIFIER FOR CAUSING SAID RECTIFIER TO BECOME CONDUCTIVE WHEN THE VOLTAGE ACROSS SAID SECOND CAPACITOR MEANS EXCEEDS A PREDETERMINED VALUE WHEREBY SAID FIRST CAPACITOR MEANS DISCHARGES THROUGH SAID LOAD AND SAID CONTROLLED RECTIFIER; AND MEANS FOR COUPLING SAID FIRST NAMED SERIES CIRCUIT TO A SOURCE OF D.C. VOLTAGE.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |