Patent US1740186A successfully refreshed from Google Patents.
Patent US3384830A successfully refreshed from Google Patents.
US3384830A
Expired / Lapsed
US
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Amplifying arrangement having two transistors
Assignee: US Philips Corp
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Filing: 1965-06-21
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Granted: 1968-05-21
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Expires: 1985-06-21
Abstract
No abstract record available.
Inventors
- 👤 Niet Edmond De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:25
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/42; H03F3/20; H03F3/21; H03F3/217; H03F3/30; H03F3/3083; H03F3/3084
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN AMPLIFYING ARRANGEMENT HAVING TWO TRANSISTORS THE EMITTER-COLLECTOR CIRCUITS OF WHICH ARE CONNECTED TO THE SUPPLY VOLTAGE IN SERIES WITH A DIODE INCLUDED BETWEEN THE COLLECTOR OF THE FIRST TRANSISTOR AND THE EMITTER OF THE SECOND TRANSISTOR, A CONTROL SIGNAL BEING APPLIED TO THE BASE OF THE FIRST TRANSISTOR, A LOAD BEING CONNECTED TO THE EMITTER OF THE SECOND TRANSISTOR, AND THE COLLECTOR OF THE FIRST TRANSISTOR TOGETHER WITH THE BASE OF THE SECOND TRANSISTOR BEING CONNECTED TO ONE END OF A COMMON RESISTOR, CHARACTERIZED IN THAT THE OTHER END OF THE COMMON RESISTOR IS CONNECTED TO A RECTIFYING CIRCUIT COMPRISING A CAPACITOR AND A SECOND DIODE AND CONNECTED TO THE LOAD CIRCUIT.
Claim 2
Dependent Claim
113 words
AN AMPLIFYING ARRANGEMENT HAVING TWO TRANSISTORS THE EMITTER-COLLECTOR CIRCUITS OF WHICH ARE CONNECTED TO THE SUPPLY VOLTAGE IN SERIES WITH A DIODE INCLUDED BETWEEN THE COLLECTOR OF THE FIRST TRANSISTOR AND THE EMITTER OF THE SECOND TRANSISTOR, A CONTROL SIGNAL BEING APPLIED TO THE BASE OF THE FIRST TRANSISTOR, A LOAD BEING CONNECTED TO THE EMITTER OF THE SECOND TRANSISTOR, AND THE COLLECTOR OF THE FIRST TRANSISTOR TOGETHER WITH THE BASE OF THE SECOND TRANSISTOR BEING CONNECTED TO ONE END OF A COMMON RESISTOR, CHARACTERIZED IN THAT THE OTHER END OF THE COMMON RESISTOR IS CONNECTED TO A RECTIFYING CIRCUIT COMPRISING A CAPACITOR AND A SECOND DIODE AND CONNECTED TO THE LOAD CIRCUIT.
References Cited (Backward Citations)
US3271590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |