US3241082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct coupled amplifier with stabilized operating point
Assignee: Transitron Electronic Corp
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Filing: 1963-02-25
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Granted: 1966-03-15
•
Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Robert H Van Ligten
- 👤 Alexander D Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:51
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/302
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
ELECTRICAL AMPLIFICATION APPARATUS FOR AMPLIFYING A.-C. SIGNALS COMPRISING, AN INPUT FOR RECEIVING A.-C. SIGNALS TO BE AMPLIFIED, AN OUTPUT, A DIRECT-COUPLED AMPLIFIER HAVING D.-C. OPERATING POINTS COUPLING SAID INPUT TO SAID OUTPUT, A SOURCE OF A FIXED POTENTIAL REFERENCE D.-C. SIGNAL, MEANS FOR DIFFERENTIALLY COMBINING SAID REFERENCE D.-C. SIGNAL WITH THE SIGNAL AT SAID OUTPUT TO PROVIDE A FEEDBACK SIGNAL AT ITS OUTPUT HAVING A D.-C. SIGNAL COMPONENT RELATED TO THE DIFFERENCE BETWEEN THAT AT SAID OUTPUT AND SAID REFERENCE D.-C. SIGNAL AND REPRESENTATIVE AT THE DEVIATION OF SAID D.-C. OPERATING POINTS FROM PRESCRIBED NORMALS, A LOW PASS FILTER FOR REJECTING SAID A.-C. SIGNALS AND FOR TRANSMITTING SAID D.-C. SIGNAL COMPONENT COUPLING THE LATTER OUTPUT TO REDUCE SAID DEVIATION, SAID DIRECT-COUPLED AMPLIFIER COMPRISING A PLURALITY OF TRANSISTORS INTERCOUPLING SAID INPUT AND OUTPUT, SAID DIFFERENTIAL COMBINING MEANS COMPRISING FIRST AND
Claim 2
Dependent Claim
139 words
ELECTRICAL AMPLIFICATION APPARATUS FOR AMPLIFYING A.-C. SIGNALS COMPRISING, AN INPUT FOR RECEIVING A.-C. SIGNALS TO BE AMPLIFIED, AN OUTPUT, A DIRECT-COUPLED AMPLIFIER HAVING D.-C. OPERATING POINTS COUPLING SAID INPUT TO SAID OUTPUT, A SOURCE OF A FIXED POTENTIAL REFERENCE D.-C. SIGNAL, MEANS FOR DIFFERENTIALLY COMBINING SAID REFERENCE D.-C. SIGNAL WITH THE SIGNAL AT SAID OUTPUT TO PROVIDE A FEEDBACK SIGNAL AT ITS OUTPUT HAVING A D.-C. SIGNAL COMPONENT RELATED TO THE DIFFERENCE BETWEEN THAT AT SAID OUTPUT AND SAID REFERENCE D.-C. SIGNAL AND REPRESENTATIVE AT THE DEVIATION OF SAID D.-C. OPERATING POINTS FROM PRESCRIBED NORMALS, A LOW PASS FILTER FOR REJECTING SAID A.-C. SIGNALS AND FOR TRANSMITTING SAID D.-C. SIGNAL COMPONENT COUPLING THE LATTER OUTPUT TO REDUCE SAID DEVIATION, SAID DIRECT-COUPLED AMPLIFIER COMPRISING A PLURALITY OF TRANSISTORS INTERCOUPLING SAID INPUT AND OUTPUT, SAID DIFFERENTIAL COMBINING MEANS COMPRISING FIRST AND
References Cited (Backward Citations)
US2714136A
Cited
US2955259A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |