US3126490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High current pulse driver using darlington circuit
Assignee: —
•
Filing: —
•
Granted: 1964-03-24
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Expires: 1981-03-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:26
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/04; H03K17/041; H03K17/0412; H03K17/04126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A HIGH SPEED, HIGH CURRENT, PULSE DRIVING CIRCUIT COMPRISING: A CURRENT SOURCE; FIRST AND SECOND TRANSISTORS EACH HAVING COLLECTOR, BASE AND EMITTER ELECTRODES; AN OUTPUT TERMINAL CONNECTED TO SAID CURRENT SOURCE AND SAID COLLECTORS OF SAID FIRST AND SECOND TRANSISTORS; MEANS CONNECTING THE EMITTER OF SAID FIRST TO THE BASE OF SAID SECOND TRANSISTOR; A SOURCE OF REFERENCE POTENTIAL; MEANS CONNECTING THE EMITTER OF SAID SECOND TRANSISTOR TO SAID SOURCE OF REFERENCE POTENTIAL; AN INPUT CIRCUIT CONNECTED TO THE BASE OF SAID FIRST TRANSISTOR; AND, AN INDUCTIVE CIRCUIT CONNECTED BETWEEN SAID SOURCE OF REFERENCE POTENTIAL AND SAID EMITTER-BASE CONNECTION, SAID INDUCTIVE CIRCUIT CONSISTING SOLELY OF A RESISTOR BY-PASSED BY AN INDUCTOR.
Claim 2
Dependent Claim
111 words
A HIGH SPEED, HIGH CURRENT, PULSE DRIVING CIRCUIT COMPRISING: A CURRENT SOURCE; FIRST AND SECOND TRANSISTORS EACH HAVING COLLECTOR, BASE AND EMITTER ELECTRODES; AN OUTPUT TERMINAL CONNECTED TO SAID CURRENT SOURCE AND SAID COLLECTORS OF SAID FIRST AND SECOND TRANSISTORS; MEANS CONNECTING THE EMITTER OF SAID FIRST TO THE BASE OF SAID SECOND TRANSISTOR; A SOURCE OF REFERENCE POTENTIAL; MEANS CONNECTING THE EMITTER OF SAID SECOND TRANSISTOR TO SAID SOURCE OF REFERENCE POTENTIAL; AN INPUT CIRCUIT CONNECTED TO THE BASE OF SAID FIRST TRANSISTOR; AND, AN INDUCTIVE CIRCUIT CONNECTED BETWEEN SAID SOURCE OF REFERENCE POTENTIAL AND SAID EMITTER-BASE CONNECTION, SAID INDUCTIVE CIRCUIT CONSISTING SOLELY OF A RESISTOR BY-PASSED BY AN INDUCTOR.
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) | 1967-03-24 | 1967-09-23 | 1968-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-24 | 1971-09-23 | 1972-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-24 | 1975-09-23 | 1976-03-24 | $7700.00 | Window Closed / Lapsed |