US3813574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High voltage transformer device in a horizontal deflection circuit
Assignee: Panasonic Holdings Corp
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Filing: 1972-11-14
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Granted: 1974-05-28
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Expires: 1992-11-14
Abstract
Abstract A high voltage transformer device in a horizontal deflection circuit supplying an extra high tension (EHT) to the anode of cathode-ray tube, which comprises a low-voltage coil (primary winding) and a high-voltage coil (secondary winding) including a high-voltage side winding and a low-voltage side winding, wherein the high-voltage side winding of the high-voltage coil is more closely magnetically coupled to the low-voltage coil than the magnetic coupling between the low-voltage side winding of the high-voltage coil and the low-voltage coil, thereby suppressing variations of the high voltage output, and improving the trackability of the focusing voltage when a focusing coil is additionally provided.
Inventors
- 👤 K Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:35
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/42; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H01F5/00; H01F5/02; H01F2005/022
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
68 words
A high voltage transformer device in a horizontal deflection circuit comprising a low-voltage coil, a core, a high-voltage coil including a high-voltage side winding and a low-voltage side winding, and a first rectifier, wherein the high-voltage side winding of said high-voltage coil is more closely magnetically coupled to said low-voltage coil than the magnetic coupling between the low-voltage side winding of said high-voltage coil and said low-voltage coil.
Claim 2
Dependent Claim
68 words
A high voltage transformer device in a horizontal deflection circuit comprising a low-voltage coil, a core, a high-voltage coil including a high-voltage side winding and a low-voltage side winding, and a first rectifier, wherein the high-voltage side winding of said high-voltage coil is more closely magnetically coupled to said low-voltage coil than the magnetic coupling between the low-voltage side winding of said high-voltage coil and said low-voltage coil.
Claim 3
Dependent Claim
100 words
A high voltage transformer device in a horizontal deflection circuit comprising a low-voltage coil, a core, a high-voltage coil including a high-voltage side winding and a low-voltage side winding, and a first rectifier, wherein said high-voltage coil and said low-voltage coil are disposed so that the ratio VH/nH between the voltage VH induced in the high-voltage side winding of said high-voltage coil and the number of turns nH thereof is smaller than the ratio VL/nL between the voltage VL induced in the low-voltage side winding of said high-voltage coil and the number of turns nL thereof, hence VL/nL > VH/nH.
Claim 4
Dependent Claim
100 words
A high voltage transformer device in a horizontal deflection circuit comprising a low-voltage coil, a core, a high-voltage coil including a high-voltage side winding and a low-voltage side winding, and a first rectifier, wherein said high-voltage coil and said low-voltage coil are disposed so that the ratio VH/nH between the voltage VH induced in the high-voltage side winding of said high-voltage coil and the number of turns nH thereof is smaller than the ratio VL/nL between the voltage VL induced in the low-voltage side winding of said high-voltage coil and the number of turns nL thereof, hence VL/nL > VH/nH.
Claim 5
Dependent Claim
71 words
A high voltage transformer device as claimed in claim 1, wherein the relation between the ratio EHT/EC between the voltage EHT induced in said high-voltage coil and the voltage EC induced in the low-voltage coil and the ratio NH/NL between the number of turns NH of said high-voltage coil and the number of turns NL of said low-voltage coil is given by EHT/EC (1 + Alpha )(NH/NL), where Alpha > O.
Claim 6
Dependent Claim
44 words
A high voltage transformer device as claimed in claim 1, wherein a focusiNg coil is additionally provided and is less closely magnetically coupled to said low-voltage coil than the magnetic coupling between the high-voltage side winding of said high-voltage coil and said low-voltage coil.
Claim 7
Dependent Claim
44 words
A high voltage transformer device as claimed in claim 4, wherein the first end of said high-voltage coil adjacent to a ground potential portion is connected to said focusing coil through a second rectifier and to the ground potential portion through a capacitive element.
Claim 8
Dependent Claim
40 words
A high voltage transformer device as claimed in claim 1, wherein said low-voltage coil, said core, said high-voltage coil and said first rectifier are housed within a casing, and the remaining space within the casing is filled with insulating oil.
Claim 9
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 1, wherein said high-voltage coil includes a split winding.
Claim 10
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 6, wherein said high-voltage coil includes a split winding.
Claim 11
Dependent Claim
52 words
A high voltage transformer device as claimed in claim 1, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 12
Dependent Claim
54 words
A high voltage transformer device as claimed in claim 6, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 13
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 7, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 14
Dependent Claim
43 words
A high voltage transformer device as claimed in claim 4, wherein said low-voltage coil is divided into a main winding and an auxiliary winding which are closely magnetically coupled to the high-voltage side winding of said high-voltage coil and said focusing coil respectively.
Claim 15
Dependent Claim
72 words
A high voltage transformer device as claimed in claim 2, wherein the relation between the ratio EHT/EC between the voltage EHT induced in said high-voltage coil and the voltage EC induced in said low-voltage coil and the ratio NH/NL between the number of turns NH of said high-voltage coil and the number of turns NL of said low-voltage coil is given by EHT/EC (1 + Alpha ) (NH/NL), where Alpha > O.
Claim 16
Dependent Claim
71 words
A high voltage transformer device as claimed in claim 2, wherein a focusing coil is additionally provided and the relation VF/nF > VH/nH is provided the ratio VF/nF being between the voltage VF induced in said focusing coil and the number of turns nF thereof and the ratio VH/nH being between the voltage VH induced in the high-voltage side winding of said high-voltage coil and the number of turns nH thereof.
Claim 17
Dependent Claim
44 words
A high voltage transformer device as claimed in claim 14, wherein the first end of said high-voltage coil adjacent to a ground potential portion is connected to said focusing coil through a second rectifier and to the ground potential portion through a capacitive element.
Claim 18
Dependent Claim
40 words
A high voltage transformer device as claimed in claim 2, wherein said low-voltage coil, said core, said high-voltage coil and said first rectifier are housed within a casing, and the remaining space within the casing is filled with insulating oil.
Claim 19
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 2, wherein said high-voltage coil includes a split winDing.
Claim 20
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 16, wherein said high-voltage coil includes a split winding.
Claim 21
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 2, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 22
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 16, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 23
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 17, wherein a stepped bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 24
Dependent Claim
43 words
A high voltage transformer device as claimed in claim 14, wherein said low-voltage coil is divided into a main winding and an auxiliary winding which are closely magnetically coupled to the high-voltage side winding of said high-voltage coil and said focusing coil respectively.
Claim 25
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 1, wherein said high-voltage coil includes a honeycomb winding.
Claim 26
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 1, wherein said high-voltage coil includes a bank winding.
Claim 27
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 6, wherein said high-voltage coil includes a honeycomb winding.
Claim 28
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 6, wherein said high-voltage coil includes a bank winding.
Claim 29
Dependent Claim
52 words
A high voltage transformer device as claimed in claim 1, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 30
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 6, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 31
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 7, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 32
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 2, wherein said high-voltage coil includes a honeycomb winding.
Claim 33
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 2, wherein said high-voltage coil includes a bank winding.
Claim 34
Dependent Claim
18 words
A high voltage transformer device as claimed in claim 16, wherein said high-voltage coil includes a honeycomb winding.
Claim 35
Dependent Claim
19 words
A high voltage transformer device as claimed in claim 16, wherein said high voltage coil includes a bank winding.
Claim 36
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 2, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
Claim 37
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 16, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound aRound the large and small diameter portions respectively of said bobbin.
Claim 38
Dependent Claim
53 words
A high voltage transformer device as claimed in claim 17, wherein a tapered bobbin having a large diameter portion and a small diameter portion is employed, and the high-voltage side winding and the low-voltage side winding of said high-voltage coil are wound around the large and small diameter portions respectively of said bobbin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |