US3737713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage supply for depressed collector traveling wave
Assignee: TDK Micronas GmbH
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Filing: 1972-01-17
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Granted: 1973-06-05
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Expires: 1992-01-17
Abstract
Abstract This invention relates to a regulated power supply for a depressed collector traveling wave tube (TWT). Instead of requiring a high voltage regulated power supply across the cathode and helix of the TWT, a variable switching power supply generates the depressed collector voltage and is placed in series with the TWT collector to cathode power supply. The variable supply compensates for variations in the output of the collector to cathode supply to provide the regulated high voltage across the helix and cathode of the TWT.
Inventors
- 👤 J Kalish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:30
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/62
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
An improved regulated power supply for a depressed collector traveling wave tube wherein there is provided an unregulated power supply for providing the required collector to cathode potential, wherein the improvement comprises: a variable power supply coupled in series with said unregulated power supply, the series combination of said unregulated supply and said variable supply providing the required traveling wave tube cathode to helix potential, said variable power supply comprising: a source of a reference signal; means for comparing said reference signal with the output of said unregulated supply; and means coupled to said comparing means and responsive to the difference of said reference signal and the cathode to helix voltage for generating a voltage proportional to said difference, which voltage complements said unregulated power supply for supplying the required cathode to helix potential.
Claim 2
Dependent Claim
134 words
An improved regulated power supply for a depressed collector traveling wave tube wherein there is provided an unregulated power supply for providing the required collector to cathode potential, wherein the improvement comprises: a variable power supply coupled in series with said unregulated power supply, the series combination of said unregulated supply and said variable supply providing the required traveling wave tube cathode to helix potential, said variable power supply comprising: a source of a reference signal; means for comparing said reference signal with the output of said unregulated supply; and means coupled to said comparing means and responsive to the difference of said reference signal and the cathode to helix voltage for generating a voltage proportional to said difference, which voltage complements said unregulated power supply for supplying the required cathode to helix potential.
Claim 3
Dependent Claim
115 words
An improved regulated power supply according to claim 1 wherein said means for generating includes: a pulse width modulator responsive to the difference between said reference signal and the cathode to helix voltage, said modulator having a square wave output whose duty cycle is proportional to said difference; a DC power supply; a switch coupled to said pulse width modulator and said DC power supply for generating an error signal whose amplitude is proportional to the duty cycle of said square wave; and a DC to DC converter responsive to the output of said switch for generating the required dc component which compliments said unregulated power supply for suppling the required cathode to helix potential.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |