Patent US3947749A successfully refreshed from Google Patents.
US3947749A
Expired / Lapsed
US
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Apparatus for generating high voltage for cathode-ray tube
Assignee: Hitachi Ltd
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Filing: 1975-01-31
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Granted: 1976-03-30
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Expires: 1995-01-31
Abstract
Abstract A high voltage generator suitably applied to the television receiver has a secondary winding divided into three or more units of different numbers of turns by a plurality of diodes. Each secondary winding unit has a different distance from the primary winding, so that the winding units are tuned to different high harmonics of the fifth or higher resonance orders, or some of the winding units to the same harmonic of fifth or high order and the remaining to harmonics.
Inventors
- 👤 Isamu Kimura
- 👤 Takumi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:59
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
An apparatus for generating a high voltage for the cathode-ray tube comprising a primary winding, a secondary winding divided into a plurality of winding units by a plurality of diodes, and means for tuning said plurality of winding units to at least two high harmonics of different odd-numbered orders including the fifth-order harmonics and another high harmonics of a different order by differentiating the winding density distribution of said primary winding on the one hand and the number of turns of each of said winding units of said secondary winding on the other.
Claim 2
Independent Claim
93 words
An apparatus for generating a high voltage for the cathode-ray tube comprising a primary winding, a secondary winding divided into a plurality of winding units by a plurality of diodes, and means for tuning said plurality of winding units to at least two high harmonics of different odd-numbered orders including the fifth-order harmonics and another high harmonics of a different order by differentiating the winding density distribution of said primary winding on the one hand and the number of turns of each of said winding units of said secondary winding on the other.
Claim 3
Dependent Claim
53 words
An apparatus according to claim 1, wherein said means for tuning provide said plurality of winding units to different order harmonics of odd-numbered orders equal to and higher than the fifth-order in which at least two harmonics of orders include the fifth-order harmonics and another order harmonics higher than that of the fifth-order.
Claim 4
Dependent Claim
50 words
An apparatus according to claim 1, wherein a dividing bobbin is provided having dividing winding sections, and wherein said winding units of said secondary winding are wound on said winding sections respectively so that at least two winding units wound on respective winding sections are different in number of turns.
Claim 5
Dependent Claim
117 words
An apparatus according to claim 1, wherein a primary dividing bobbin and a secondary dividing bobbin are provided, each of said primary and secondary dividing bobbins having divided winding sections, and wherein said primary winding is wound on said winding sections of said primary dividing bobbin so that winding portions wound on at least two of said winding sections of said primary dividing bobbin are different in number of turns to differentiate the winding density distribution of said primary winding, said winding units of said secondary winding being wound on said winding sections of said secondary dividing bobbin respectively so that at least two winding units wound on respective winding sections are different in number of turns.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 1, wherein at least one of said plurality of diodes provides means for supplying voltage to electrodes of a cathode-ray tube.
Claim 7
Dependent Claim
40 words
An apparatus according to claim 1, wherein each of said plurality of winding units of said secondary winding have a different number of turns being a predetermined function of a minimum number of turns of one of said winding units.
Claim 8
Dependent Claim
49 words
An apparatus according to claim 1, wherein said primary winding is divided into a plurality of winding units, each of said plurality of primary winding units having a different number of turns being a predetermined function of a minimum number of turns of one of said primary winding units.
Claim 9
Dependent Claim
109 words
A high voltage generator for a cathode-ray tube of a television receiver comprising a primary winding, a secondary winding divided into a plurality of winding units by a plurality of diodes, and means for tuning at least one of said plurality of winding units to a resonance order of at least the fifth-order harmonic and tuning at least another of said plurality of winding units to an odd-numbered resonance order higher than said fifth-order harmonic, said means for tuning providing a different number of turns in each of said secondary winding units and adjusting the winding density distribution of said primary winding relative to said different number of turns.
Claim 10
Dependent Claim
109 words
A high voltage generator for a cathode-ray tube of a television receiver comprising a primary winding, a secondary winding divided into a plurality of winding units by a plurality of diodes, and means for tuning at least one of said plurality of winding units to a resonance order of at least the fifth-order harmonic and tuning at least another of said plurality of winding units to an odd-numbered resonance order higher than said fifth-order harmonic, said means for tuning providing a different number of turns in each of said secondary winding units and adjusting the winding density distribution of said primary winding relative to said different number of turns.
Claim 11
Dependent Claim
29 words
A high voltage generator according to claim 8 wherein said means for tuning provides each of said winding units to a resonance order of at least the fifth-order harmonic.
Claim 12
Dependent Claim
38 words
A high voltage generator according to claim 9, wherein one of said winding units is provided to the fifth-order harmonics, and the remaining winding units are provided to different odd-numbered order harmonics higher than that of the fifth-order.
Claim 13
Dependent Claim
37 words
A high voltage generator according to claim 9, wherein at least two winding units are provided to the fifth-order harmonics, and the remaining winding units are provided to different odd-numbered orders higher than that of the fifth-order.
Claim 14
Dependent Claim
28 words
A high voltage generator according to claim 8, wherein at least one of said plurality of diodes provides means for supplying voltage to electrodes of a cathode-ray tube.
References Cited (Backward Citations)
US3562623A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |