US3280338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Constant current biasing circuit
Assignee: Westinghouse Electric Corp
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Filing: 1961-06-27
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Granted: 1966-10-18
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Expires: 1981-06-27
Abstract
No abstract record available.
Inventors
- 👤 Hung C Lin
- 👤 Paul F Pittman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315; H03K17/00; H03K17/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
IN AN AMPLIFIER CIRCUIT, A TRANSISTOR HAVING AN EMITTER ELECTRODE, COLLECTOR ELECTRODE AND A BASE ELECTRODE; MEANS FOR CONNECTING AN INPUT SIGNAL TO SAID ELECTRODE; OUTPUT MEANS CONNECTED ACROSS THE EMITTER-COLLECTOR CIRCUITS; MEANS FOR BIASING THE BASE-EMITTER CIRCUIT; MEANS FOR BIASING THE COLLECTOR-EMITTER CIRCUIT; AND A SEMICONDUCTOR DEVICE; SAID SEMICONDUCTOR DEVICE BEING CHARACTERIZED AS HAVING A VOLTAGE-AMPERE CHARACTERISTIC WHICH INCLUDES A CONSTANT CURRENT PORTION OVER A PRESELECTED RANGE OF VOLTAGE VALUES OF PREDETERMINED POLARITY; SAID SEMICONDUCTOR DEVICE CONNECTED IN SERIES CIRCUIT COMBINATION WITH SAID EMITTER AND A CAPACITOR CONNECTED IN A PARALLEL CIRCUIT RELATIONSHIP WITH SAID SEMICONDUCTOR DEVICE.
Claim 2
Dependent Claim
98 words
IN AN AMPLIFIER CIRCUIT, A TRANSISTOR HAVING AN EMITTER ELECTRODE, COLLECTOR ELECTRODE AND A BASE ELECTRODE; MEANS FOR CONNECTING AN INPUT SIGNAL TO SAID ELECTRODE; OUTPUT MEANS CONNECTED ACROSS THE EMITTER-COLLECTOR CIRCUITS; MEANS FOR BIASING THE BASE-EMITTER CIRCUIT; MEANS FOR BIASING THE COLLECTOR-EMITTER CIRCUIT; AND A SEMICONDUCTOR DEVICE; SAID SEMICONDUCTOR DEVICE BEING CHARACTERIZED AS HAVING A VOLTAGE-AMPERE CHARACTERISTIC WHICH INCLUDES A CONSTANT CURRENT PORTION OVER A PRESELECTED RANGE OF VOLTAGE VALUES OF PREDETERMINED POLARITY; SAID SEMICONDUCTOR DEVICE CONNECTED IN SERIES CIRCUIT COMBINATION WITH SAID EMITTER AND A CAPACITOR CONNECTED IN A PARALLEL CIRCUIT RELATIONSHIP WITH SAID SEMICONDUCTOR DEVICE.
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) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |