US3217268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel diode saturable core multivibrator
Assignee: RCA Corp
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Filing: 1961-07-18
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Granted: 1965-11-09
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Expires: 1981-07-18
Abstract
No abstract record available.
Inventors
- 👤 Hu Kuo Chen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:20
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
AN ELECTRICAL CIRCUIT COMPRISING IN COMBINATION A PAIR OF PARALLEL CIRCUIT BRANCHES INCLUDING RESPECTIVELY, A NEGATIVE RESISTANCE TUNNEL DIODE, ANONLINEAR INDUCTOR COUPLED IN PARALLEL WITH SAID DIODE AND EXHIBITING A SUBSTANTIALLY RECTANGULAR HYSTERESIS LOP CHARACTERISTIC, AND AN IMPEDANCE DEVICE COUPLED IN SERIES WITH THE PARALLEL COMBINATION OF SAID DIODE AND SAID INDUCTOR, SAID INDUCTORS MAGNETICALLY COUPLING TOGETHER SAIDCIRCUIT BRANCHES IN A MANNER TO CAUSE SAID DIODES TO SWITCH ALTERNATELY AND OPPOSITELY DURING OPERATION FROM A LOW VOLTAGE STAGE TO A HIGH VOLTAGE STATE AND VICE VERSA, AND MEANS INCLUDING A BIASING SOURCE COUPLED ACROSS EACH OF SAID CIRCUIT BRANCHES FOR FORWARD BIASING SAID DIODES TO OPERATE ABOUT THEIR NEGATIVE RESISTANCE REGIONS.
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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |