US3312833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amplifier parallel connected cathode follower output stage
Assignee: Beckman Coulter Inc
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Filing: 1963-06-26
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Granted: 1967-04-04
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Expires: 1983-06-26
Abstract
No abstract record available.
Inventors
- 👤 Richard L Durrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:15
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/02; H03G; H03G11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A CURRENT LIMITING OUTPUT STAGE FOR USE WITH AN AMPLIFIER COMPRISING FIRST AND SECOND TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPES, EACH OF SAID TRANSISTORS INCLUDING A BASE, AND EMITTER AND COLLECTOR ELECTRODES, FIRST AND SECOND DIODES, INPUT AND OUTPUT TERMINALS, FIRST AND SECOND VOLTAGE TERMINALS ADAPTED TO BE CONNECTED TO SOURCES OF VOLTAGE, MEANS CONNECTING SAID INPUT TERMINAL WITH THE BASES OF SAID FIRST AND SECOND TRANSISTORS FOR APPLYING INPUT SIGNALS THERETO, MEANS CONNECTING THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR AND THE EMITTER ELECTRODE OF SAID SECOND TRANSISTOR WITH SAID FIRST VOLTAGE TERMINAL FOR SUPPLYING VOLTAGE TO SAID RESPECTIVE COLLECTOR AND EMITTER ELECTRODES THEREOF, MEANS CONNECTING SAID EMITTER ELECTRODES OF SAID FIRST TRANSISTOR AND SAID COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR WITH SAID SECOND VOLTAGE TERMINAL FOR SUPPLYING VOLTAGE TO THE RESPECTIVE EMITTER AND COLLECTOR ELECTRODES THEREOF,
Claim 2
Dependent Claim
137 words
A CURRENT LIMITING OUTPUT STAGE FOR USE WITH AN AMPLIFIER COMPRISING FIRST AND SECOND TRANSISTORS OF OPPOSITE CONDUCTIVITY TYPES, EACH OF SAID TRANSISTORS INCLUDING A BASE, AND EMITTER AND COLLECTOR ELECTRODES, FIRST AND SECOND DIODES, INPUT AND OUTPUT TERMINALS, FIRST AND SECOND VOLTAGE TERMINALS ADAPTED TO BE CONNECTED TO SOURCES OF VOLTAGE, MEANS CONNECTING SAID INPUT TERMINAL WITH THE BASES OF SAID FIRST AND SECOND TRANSISTORS FOR APPLYING INPUT SIGNALS THERETO, MEANS CONNECTING THE COLLECTOR ELECTRODE OF SAID FIRST TRANSISTOR AND THE EMITTER ELECTRODE OF SAID SECOND TRANSISTOR WITH SAID FIRST VOLTAGE TERMINAL FOR SUPPLYING VOLTAGE TO SAID RESPECTIVE COLLECTOR AND EMITTER ELECTRODES THEREOF, MEANS CONNECTING SAID EMITTER ELECTRODES OF SAID FIRST TRANSISTOR AND SAID COLLECTOR ELECTRODE OF SAID SECOND TRANSISTOR WITH SAID SECOND VOLTAGE TERMINAL FOR SUPPLYING VOLTAGE TO THE RESPECTIVE EMITTER AND COLLECTOR ELECTRODES THEREOF,
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) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |