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US3133208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-saturating transistor blocking oscillator
Assignee: AT&T Inc
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Filing: 1961-12-29
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Granted: 1964-05-12
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Norman E Lentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:11
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A BLOCKING OSCILLATOR WHICH COMPRISES A TRANSISTOR HAVING AN EMITTER ELECTRODE, A COLLECTOR ELECTRODE, AND A BASE ELECTRODE, A SOURCE OF DIRECT COLLECTOR POTENTIAL, A TRANSFORMER HAVING AT LEAST A COLLECTOR WINDING AND A FEEDBACK WINDING, MEANS CONNECTING SAID COLLECTOR WINDING DIRECTLY IN SERIES BETWEEN SAID COLLECTOR ELECTRODE AND ONE SIDE OF SAID SOURCE WITHOUT INTERVENING IMPEDANCE, MEANS CONNECTING SAID EMITTER ELECTRODE DIRECTLY TO THE OTHER SIDE OF SAID SOURCE WITHOUT INTERVENING IMPEDANCE SAID SOURCE BEING POLED IN THE DIRECTION OF POSITIVE CURRENT FLOW BETWEEN SAID COLLECTOR AND EMITTER ELECTRODES MEANS CONNECTING SAID FEEDBACK WINDING BETWEEN SAID BASE AND EMITTER ELECTRODES TO PROVIDE POSITIVE FEEDBACK FROM SAID COLLECTOR ELECTRODE TO SAID BASE ELECTRODE, AND MEANS CLAMPING ONE END OF A WINDING OF SAID TRANSFORMER OTHER
Claim 2
Dependent Claim
125 words
A BLOCKING OSCILLATOR WHICH COMPRISES A TRANSISTOR HAVING AN EMITTER ELECTRODE, A COLLECTOR ELECTRODE, AND A BASE ELECTRODE, A SOURCE OF DIRECT COLLECTOR POTENTIAL, A TRANSFORMER HAVING AT LEAST A COLLECTOR WINDING AND A FEEDBACK WINDING, MEANS CONNECTING SAID COLLECTOR WINDING DIRECTLY IN SERIES BETWEEN SAID COLLECTOR ELECTRODE AND ONE SIDE OF SAID SOURCE WITHOUT INTERVENING IMPEDANCE, MEANS CONNECTING SAID EMITTER ELECTRODE DIRECTLY TO THE OTHER SIDE OF SAID SOURCE WITHOUT INTERVENING IMPEDANCE SAID SOURCE BEING POLED IN THE DIRECTION OF POSITIVE CURRENT FLOW BETWEEN SAID COLLECTOR AND EMITTER ELECTRODES MEANS CONNECTING SAID FEEDBACK WINDING BETWEEN SAID BASE AND EMITTER ELECTRODES TO PROVIDE POSITIVE FEEDBACK FROM SAID COLLECTOR ELECTRODE TO SAID BASE ELECTRODE, AND MEANS CLAMPING ONE END OF A WINDING OF SAID TRANSFORMER OTHER
References Cited (Backward Citations)
US3070758A
Cited
US3072802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |