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Patent US3796965A successfully refreshed from Google Patents.
US3796965A
Expired / Lapsed
US
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Voltage droop compensation circuit for traveling wave tubes
Assignee: Westinghouse Electric Corp
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Filing: 1971-12-28
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Granted: 1974-03-12
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Expires: 1991-12-28
Abstract
Abstract Voltage droop on the body of an electronic traveling wave tube during the time of response to an input pulse is compensated by transferring energy from the less critical collector supply to the body supply. A compensation circuit is connected in series with the body supply and includes a compensation capacitor charged by autotransformer action from the collector supply, thereby producing a rise voltage compensating for the drop in cathode voltage of the body supply and thereby minimizing the droop in the body to cathode voltage.
Inventors
- 👤 A Quesinberry
- 👤 P Espersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:34
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54; H03F3/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
For use with a traveling wave tube having a grid, a cathode, a collector, and an anode having collector and cathode power supplies, a voltage droop compensation circuit comprising: a transformer having primary and secondary windings, said primary winding being connected in series circuit with the collector power supply between the collector and cathode of the traveling wave tube, said secondary winding being connected in series circuit with the cathode power supply between the anode and the cathode of the traveling wave tube, and said transformer coupling energy from the collector power supply through said primary winding to said secondary winding in said series circuit with said cathode power supply, said secondary winding being so related to said primary winding as to produce a voltage aidinG that of the cathode power supply to compensate for droop in the cathode to anode voltage of the traveling wave tube during pulsing.
Claim 2
Dependent Claim
149 words
For use with a traveling wave tube having a grid, a cathode, a collector, and an anode having collector and cathode power supplies, a voltage droop compensation circuit comprising: a transformer having primary and secondary windings, said primary winding being connected in series circuit with the collector power supply between the collector and cathode of the traveling wave tube, said secondary winding being connected in series circuit with the cathode power supply between the anode and the cathode of the traveling wave tube, and said transformer coupling energy from the collector power supply through said primary winding to said secondary winding in said series circuit with said cathode power supply, said secondary winding being so related to said primary winding as to produce a voltage aidinG that of the cathode power supply to compensate for droop in the cathode to anode voltage of the traveling wave tube during pulsing.
Claim 3
Dependent Claim
150 words
A compensation circuit as recited in claim 1 wherein: said cathode power supply includes an energy storage capacitor connected in parallel with the cathode power supply and charged from the cathode power supply during interpulse periods of the traveling wave tube to assist in maintaining the anode to cathode voltage of the traveling wave tube during pulsing, and there is further provided: a compensation capacitor connected in parallel with said secondary winding and in series circuit with said energy storage capacitor and to the cathode of the traveling wave tube, and said transformer couples energy from said collector supply during pulsing of the traveling wave tube to charge said compensation capacitor and produce a voltage rise thereacross adding to the voltage of the energy storage capacitor as the latter discharges during pulsing of the traveling tube and thereby compensating for droop of the cathode to anode voltage during pulsing time.
Claim 4
Dependent Claim
27 words
A compensation circuit as recited in claim 2 wherein the charging time of the compensation capacitor is approximately 10 times larger than the input signal pulse time.
Claim 5
Dependent Claim
52 words
A compensation circuit as recited in claim 2 wherein there is further provided a uni-directional conducting device connected in parallel with the compensation capacitor and so poled so as to prevent oscillation in the LC network formed by the compensation capacitor and the secondary winding of the transformer upon termination of pulsing.
Claim 6
Dependent Claim
92 words
A compensation circuit as recited in claim 1 wherein n N2/N1, the turns ratio of the primary and secondary windings N1 and N2, respectively, is expressed by: n (Ib/Ic)(1 + (C1/Cb))(3) wherein Ib is the anode current, Ic is the collector current, and Cb and C1 are the capacitances of the energy storage capacitor and the compensation capacitor, respectively, and furthermore: Cb 2W/Vb2(4) wherein W is the energy to be supplied in selected units and Vb is the requisite cathode to anode voltage, and Cb is capacitance in units related to W.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |