Patent US3706047A successfully refreshed from Google Patents.
US3706047A
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US
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Amplifier circuit
Assignee: Telefunken Electronic GmbH
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Filing: 1971-01-29
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Granted: 1972-12-12
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Expires: 1991-01-29
Abstract
Abstract AN AMPLIFIER CIRCUIT COMPRISES A COMMON-EMITTER CONNECTED TRANSISTOR INTO THE COLLECTOR PATH OF WHICH IS CONNECTED A FIRST RESISTANCE ALSO CONNECTED TO A VOLTAGE SOURCE AND A VOLTAGE DIVIDER FOR ADJUSTING THE BASE EMITTER DIRECTOR VOLTAGE AND INCLUDING A SERIES CONNECTION OF A SECOND RESISTANCE AND A DIODE, THE SECOND RESISTANCE BEING CONNECTED TO THE VOLTAGE SOURCE AND THE DIODE BEING CONNECTED IN PARALLEL WITH THE BASE-TO EMITTER PATH OF THE TRANSISTOR AND THE FIRST AND SECOND RESISTANCES BEING SEMICONDUCTOR STRAIN GAUGES.
Inventors
- 👤 Gerhard Gunzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:31
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/286; H03K3/2893; H03F; H03F1/00; H03F1/30; H03F1/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |