US3254308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor amplifier with degenerative volume control utilizing a unijunction transistor
Assignee: General Dynamics Corp
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Filing: 1963-06-12
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Granted: 1966-05-31
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 William M Mclean
- 👤 Kenneth D Schreder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:34
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN AMPLIFIER HAVING A CONTROL ELECTRODE, AN OUTPUT ELECTRODE AND A COMMON ELECTRODE, AN OUTPUT LOAD IMPEDANCE CONNECTED IN THE OUTPUT CIRCUIT OF SAID AMPLIFIER, A UNIJUNCTION TRANSISTOR WITH TWO BASE ELECTRODES AND AN EMITTER ELECTRODE IN WHITH THE BASE-TO-BASE RESISTANCE IS A NONLINEAR FUNCTION OF THE EMITTER CURRENT, MEANS FOR BIASING SAID UNIJUNCTION TRANSISTOR SO THAT SAID TRANSISTOR PRESENTS A LOW BASE-TO-BASE RESISTANCE FOR EMITTER CURRENT EXCEEDING A PREDETERMINED MAGNITUDE, THE PATH OF SAID TWO BASES BEING SERIALLY COUPLED FOR SIGNAL FREQUENCIES
Claim 2
Dependent Claim
83 words
AN AMPLIFIER HAVING A CONTROL ELECTRODE, AN OUTPUT ELECTRODE AND A COMMON ELECTRODE, AN OUTPUT LOAD IMPEDANCE CONNECTED IN THE OUTPUT CIRCUIT OF SAID AMPLIFIER, A UNIJUNCTION TRANSISTOR WITH TWO BASE ELECTRODES AND AN EMITTER ELECTRODE IN WHITH THE BASE-TO-BASE RESISTANCE IS A NONLINEAR FUNCTION OF THE EMITTER CURRENT, MEANS FOR BIASING SAID UNIJUNCTION TRANSISTOR SO THAT SAID TRANSISTOR PRESENTS A LOW BASE-TO-BASE RESISTANCE FOR EMITTER CURRENT EXCEEDING A PREDETERMINED MAGNITUDE, THE PATH OF SAID TWO BASES BEING SERIALLY COUPLED FOR SIGNAL FREQUENCIES
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |