US3384833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-power amplifier systems
Assignee: Leeds and Northrup Co
•
Filing: 1965-07-12
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Granted: 1968-05-21
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Expires: 1985-07-12
Abstract
No abstract record available.
Inventors
- 👤 James J Hitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
H; H03; H03K; H03K7/00; H03K7/10; G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/16; G05D3/18; H03F; H03F3/00; H03F3/20; H03F3/21; H03F3/217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A POWER-AMPLIFIER SYSTEM FOR EXCITATION OF A LOAD IN DEPENDENCE UPON THE MAGNITUDE OF A DC ERROR-SIGNAL COMPRISING PULSE-GENERATING MEANS HAVING AN INPUT CIRCUIT TO WHICH THE ERROR-SIGNAL IS APPLIED AND PRODUCING OUTPUT PULSES ONE OF WHOSE CHARACTERISTICS FREQUENCY AND WIDTH IS A FUNCTION OF THE MAGNITUDE OF THE APPLIED ERROR-SIGNAL, AN AND-GATE HAVING ONE INPUT ENABLED BY THE OUTPUT PULSES OF SAID PULSE-GENERATING MEAS AND ANOTHER INPUT ENABLED BY THE ERROR-SIGNAL TO EXTEND DEPENDENT UPON THE MAGNITUDE THEREOF, AND A POWER-AMPLIFIER HAVING AN INPUT CIRCUIT EXCITED VIA SAID AND-GATE TO MINIMIZE THE POWER-DISSIPATION IN SAID POWER-AMPLIFIER AND TO DELIVER TO THE LOAD CURRENT PULSES WHOSE AMPLITUDE AND THE RATIO OF WHOSE ON-OFF TIMES BOTH DEPEND UPON THE MAGITUDE OF THE ERROR-SIGNAL.
Claim 2
Dependent Claim
122 words
A POWER-AMPLIFIER SYSTEM FOR EXCITATION OF A LOAD IN DEPENDENCE UPON THE MAGNITUDE OF A DC ERROR-SIGNAL COMPRISING PULSE-GENERATING MEANS HAVING AN INPUT CIRCUIT TO WHICH THE ERROR-SIGNAL IS APPLIED AND PRODUCING OUTPUT PULSES ONE OF WHOSE CHARACTERISTICS FREQUENCY AND WIDTH IS A FUNCTION OF THE MAGNITUDE OF THE APPLIED ERROR-SIGNAL, AN AND-GATE HAVING ONE INPUT ENABLED BY THE OUTPUT PULSES OF SAID PULSE-GENERATING MEAS AND ANOTHER INPUT ENABLED BY THE ERROR-SIGNAL TO EXTEND DEPENDENT UPON THE MAGNITUDE THEREOF, AND A POWER-AMPLIFIER HAVING AN INPUT CIRCUIT EXCITED VIA SAID AND-GATE TO MINIMIZE THE POWER-DISSIPATION IN SAID POWER-AMPLIFIER AND TO DELIVER TO THE LOAD CURRENT PULSES WHOSE AMPLITUDE AND THE RATIO OF WHOSE ON-OFF TIMES BOTH DEPEND UPON THE MAGITUDE OF THE ERROR-SIGNAL.
References Cited (Backward Citations)
US3226565A
Cited
US3231824A
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 |