US3813574A - High voltage transformer device in a horizontal deflection circuit - Google Patents

High voltage transformer device in a horizontal deflection circuit Download PDF

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Publication number
US3813574A
US3813574A US00306406A US30640672A US3813574A US 3813574 A US3813574 A US 3813574A US 00306406 A US00306406 A US 00306406A US 30640672 A US30640672 A US 30640672A US 3813574 A US3813574 A US 3813574A
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voltage
coil
transformer device
low
side winding
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Expired - Lifetime
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US00306406A
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English (en)
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K Sato
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Priority claimed from JP46092893A external-priority patent/JPS5138046B2/ja
Priority claimed from JP46095599A external-priority patent/JPS5211412B2/ja
Priority claimed from JP46099758A external-priority patent/JPS5113846B2/ja
Priority claimed from JP47009273A external-priority patent/JPS527525B2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/42—Flyback transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/02—Coils wound on non-magnetic supports, e.g. formers
    • H01F2005/022—Coils wound on non-magnetic supports, e.g. formers wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications

Definitions

  • ABSTRACT A high voltage transformer device in a horizontal deflection circuit Supplying an extra high tension (E to the anode of cathode-ray tube, which comprises a low-voltage coil (primary winding) andahighwoltage 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 lowvoltage 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.
  • FIG. Ta is a diagrammatic representation of FIG.
  • This invention relates to a high voltage transformer device which is substantially free from variations in the high voltage output and shows an improved trackability.
  • the induced voltage is higher in the high-voltage side windings adjacent to the second end and lower in the low-voltage side windings adjacent to the first end due tothe fact that the leakage flux passing through the low-voltage coil c'utsacross the low-voltage side windings of the high-voltage coil as described above.
  • the mode of variations in the high voltage output relative to high-voltage load current, or high voltage regulation is also unsatisfactory due to, for example, an undesirable increase in the stray capacity and the high voltage output is abruptly decreased with the increase in the high-voltage load current.
  • Another object of the present invention is to provide a high voltage transformer device which can supply a focusing voltage of satisfactory trackability.
  • a high voltage transformer device comprising a low-voltage coil, a core, a highvoltage coil including a high-voltage side winding and a low-voltage side winding, and a high-voltage rectifier, wherein the high-voltage side winding of said highvoltage 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.
  • a high voltage transformer device comprising a low-voltage coil, a core, a highvoltage coil including a high-voltage side winding and a low-voltage side winding, and a high-voltage rectifier, wherein said high-voltage coil and said low-voltage coil are disposed so that the ratio V /nH between the voltage V induced in the high-voltage side winding of said high-voltage coil and the number of turns n thereof is smaller than the ratio V /n between the voltage V former device according to the present invention;
  • FIGS. 3a and 3b are diagrammtic views illustrating the structural difference between the high voltage transformer device according to the present invention and a prior art device of the samekind;
  • FIG. 4 is a graph showing the induced voltage distribution in the high-voltage coil of the high voltage transformer device according to the present invention and the prior art high voltage transformer device;
  • FIG. 5 is a graph showing the relation between the high voltage output and the load current-in the high voltage transformer device according to the present invention and the prior arthigh voltage transformer de- VlCe; Y 1
  • FIG. 6 is a schematic sectional view showing the structure of another embodiment of the present invention.
  • FIG. 8 is a graph showing an improved trackability of focusing voltage obtained with the high voltage transformer device shown in FIG. 6 as compared with the similar characteristic obtained with a prior .art high voltage transformer device of this kind;
  • FIG. 9 is a schematic sectional view with parts shown by blocks, showing the structure of a further embodiment of the present invention.
  • FIGS. 10a and 10b are partly sectional elevations showing two different forms of a high-voltage coil portion employed in another embodiment of the present invention.
  • FIG. 11 is a schematic sectional view showing another coil arrangement which may be employed in lieu of the forms shown in FIGS. 10a and 10b;
  • FIG. 12 is a diagrammatic view showing the electrical connection in still another embodiment of the present invention.
  • FIG. 13 is a schematic sectional view showing the structure of the embodiment shown in FIG. 12.
  • FIG. 14 is a graph showing the relation between the focusing voltage and the load current in the high voltage transformer device shown in FIG. 12.
  • the circuit includes a horizontal output transistor 1, a damper diode 2, a deflection yoke coil 3, capacitors 4 and 5, and a high voltage transformer device 8 connected to a picture tube 7.
  • the high voltage transformer device 8 comprises a highvoltage rectifier diode 9 and a high voltage transformer 10 which is composed of a core 13, a low-voltage coil 11 and a high-voltage coil 12.
  • a terminal 6 of the lowvoltage coil 11 is connected to a dc. power supply.
  • FIG. 1 shows a circuit arrangement for deriving the horizontal deflection output and high voltage output from the same transistor by way of example, it will be understood that another circuit arrangement for deriving the deflection output from another transistor may be employed in place of the circuit arrangement shown in FIG. 1.
  • FIG. 2 shows the structure of one form of the high voltage transformer shown in FIG. 1.
  • the low-voltage coil 11 or primary coil of the high voltage transformer 10 is wound around a coil bobbin which is mounted on the leg of the core 13.
  • the high-voltage coil 12 or secondary coil of the high voltage transformer 10 is wound around a coil bobbin 14 disposed coaxially around the coil bobbin 15.
  • the high-voltage coil 12 consists of a plurality of windings 12a, 12b, 12m and 12n which are connected in series. In the arrangement shown in FIG.
  • the windings near by the winding 12a are the low-voltage side windings of the high-voltage coil 12
  • the windings near by the winding 12n are the high-voltage side windings of the high-voltage coil 12.
  • the core 13 consists of a pair of portions which are joined at a joint 16.
  • the reference numeral 17 designates the grounded or first end of the high-voltage coil 12.
  • the low-voltage coil 11 is disposed adjacent to the high-voltage side windings of the high-voltage coil 12 as seen in FIG. 2.
  • This arrangement differs entirely from the arrangement employed generally in prior art high voltage transformers.
  • the low-voltage side windings of the high-voltage coil are disposed adjacent to the low potential portion or low-voltage coil as described before.
  • FIG. 3a is a diagrammatic view showing the structure of the high voltage transformer device according to the present invention
  • FIG. 3b is a diagrammatic view showing the structure of a prior art high voltage transformer device having a coil arrangement as above described
  • a high-voltage coil 18 including a low-voltage side winding 18a and a highvoltage side winding 18n is magnetically coupled to a low-voltage coil 19 in a relation as shown in FIG. 3b.
  • FIGS. 3a is a diagrammatic view showing the structure of the high voltage transformer device according to the present invention
  • FIG. 3b is a diagrammatic view showing the structure of a prior art high voltage transformer device having a coil arrangement as above described
  • a high-voltage coil 18 including a low-voltage side winding 18a and a highvoltage side winding 18n is magnetically coupled to a low-voltage coil 19 in a relation as shown in FIG. 3b.
  • a main magnetic fiux 20 is shown by the dotted lines and a leakage fiux 21 is shown by the one-dot chain line.
  • the main magnetic flux 20 cuts completely across both the low-voltage coil and the highvoltage coil.
  • the leakage flux 21 cuts across the low-voltage side windings of the high-voltage coil in the case of FIG. 3b, whereas it cuts across the highvoltage side windings of the high-voltage coil in the case of FIG. 3a, although the amount of the leakage flux 21 is very slight compared with the main magnetic flux 20.
  • the highvoltage coil and low-voltage coil are disposed to give the relation between the ratio of the voltage V volts induced in the high-voltage side windings of the high-voltage coil to the number of turns n thereof and the ratio of the voltage V volts induced in the low-voltage side windings of the high-voltage coil to the number of turns n thereof.
  • the solid line in FIG. 4 represents the induced voltage distribution or a voltage obtained by plotting the amount of voltage induced in each turn of the highvoltage coil in the high voltage transformer device according to the present invention, while the dotted line represents the induced voltage distribution in the prior art high voltage transformer device.
  • the one-dot chain line in FIG. 4 represents the mean value and such an induced voltage distribution is seenin a device such as a power transformer in which the leakage flux is negligible.
  • FIG. 5 shows the mode of variations of the high voltage output relative to the highvoltage load current, or the high voltage regulation, in the high voltage transformer device according to the present invention, while the dotted curve shows the high voltage regulation in the prior art high voltage transformer device. It will be clearly seen from FIG. 5 that undesirable variationsof the high voltage output can be remarkably reduced in the high voltage transformer device of the present invention comparedwith the prior art high voltage transformer device.
  • FIG. 6 shows another embodiment of the present invention having a focusing power supply incorporated therein.
  • a focusing coil 22 is wound around a coil bobbin 23 which is mounted on the leg of a core 13 at a position where the degree of magnetic coupling between it and a low-voltage coil 11 is less than that between a high-voltage coil 12 and the lowvoltage coil 11.
  • the focusing coil 22 may be electrically connected to the high-voltage coil 12 and to a focusing diode 24 in a manner as shown in FlG. 7a or 7b.
  • a capacitor 25 connects the first end of the high-voltage coil 12 to ground in ac.
  • FIG. 7b The arrangement shown in FIG. 7b is the sameas the arrangement in which a focusing power supply is tapped from an intermediate point of the high-voltage coil 12.
  • the trackability of the focusing voltage obtained with the high voltage transformer device shown in FIG. 6' is shown in FIG. 8 and is compared with that of a prior art high voltage transformer device-of this kind.
  • the thick solid line, one-dot chain line and dotted line represent the trackability obtained with the arrangements shown in FIGS. and 7b and with the prior art device respectively.
  • the hatched portion defined between thin solid lines indicates the focusing voltage range which is required for obtaining a sound picture.
  • second end of the high-voltage coil is used herein to denote the end connected to the terminal at which positive high voltage pulses appear when the other or first end of the high-voltage coil is grounded. It is to be understood that the second end does not simply indicate the end remote from the end of the coil structure at which the coiling operation is started.
  • a few methods as described below are very effective for improving the dielectric strength of the high voltage transformer device according to the present invention, especially the dielectric strength between the highvoltage side windings of the high-voltage coil and the low-voltage coil.
  • a high volt age transformer as shown in FIG. 6 is housed within a casing 26 together with a high-voltage rectifier diode 9 and the interior of the casing 26 is filled with a quantity of insulating oil as shown in FIG. 9.
  • the charging of insulating oil in the casing 26 may result in an increase in the specific inductive capacity of the space existing before the charging of the insulating oil, and the stray capacity of the high-voltage coil may be thereby increased tov cause remarkable fluctuations of the operating characteristic of the high voltage transformer device.
  • the high-voltage regulation and trackability of the focusing voltage are entirely free from any variations when the operating characteristic of the high voltage transformer device is suitably regulated in the state in which it is submerged in the insulating oil.
  • the high voltage transformer 10 and high-voltage rectifier diode 9 are. shown housed within the casing 26 whose internal space is filled with the insulating oil 29 and the high-voltage output, focusing output, and other output and input are connected to a high voltage outputterminal 27, a focusing voltage output terminal 28, and lowvoltage output and input terminals 30 respectively.
  • a stepped coil bobbin 31 as shown in FIG. 10a or a tapered coil bobbin 32 as shown in FIG. 10b is used for mounting the highvoltage coil in the form of a split winding so as to increase the insulation distance between the high-voltage side windings of the high-voltage coil and the lowvoltage coil and to reduce the stray capacity of the high-voltage coil.
  • a honeycomb winding for example, the same way of thinking may be applied to provide a structure as shown in FIG. 11 in which it will be seen that the high-voltage coil 12 is carried by a coil bobbin 33 having a shape as shown. The same way of thinking may also be applied to a bank winding.
  • FIG. 12 is a diagrammatic view showing a preferred arrangement of elements in still another embodiment of the present invention
  • FIG. 13 is the schematic sectional view showing the structure of the embodiment shown in FIG. 12.
  • a low-voltage coil 11 is divided into a main winding 34 and an auxiliary winding 35 connected in series, and the main and auxiliary windings 34 and 35 of the low-voltage coil 11 are closely magnetically coupled to high-voltage side windings of a high-voltage coil 12 and a focusing coil 22 respectively.
  • This arrangement is advantageous'in that the focusing coil 22 is more easily controlled by the magnetic flux variations of the low-voltage coil 11 than when it is less closely magnetically coupled to the low-voltage coil 11 and the variations of the focusing voltage relative to variations of the high-voltage load current can be reduced.
  • the above effect is graphically shown in FIG. 14 in which the solid line represents the variations of the focusing voltage in the case in which the lowvoltage coil is divided into the main and auxiliary windings and the dotted line represents similar variations in the case in which the low-voltage coil is not divided into such windings.
  • the high voltage transformer device produces a high voltage output which shows remarkably reduced voltage variations.
  • the internal impedance Zi will be taken herein to represent the variations of the high voltage output of the high voltage transformer device.
  • This internal impedance Zi is defined by Zi (high voltage output in kilovolts when 1, O)
  • c I is the high-voltage load current.
  • the value of the internal impedance Zi in the present invention is of of Zi in prior art highvoltage transformer devices is generally of the order of 3 to 3.5 megohms. It is thus apparent that the high voltage output variations can be remarkably reduced according to the present invention.
  • means such as a saturable reactor is connected in series in the dc. circuit supplying the horizontal output circuit in a television receiver for controlling the dc. power supply voltage thereby stabilizing the high voltage output.
  • the effective internal impedance can only be reduced to a level of the-order of 1.5 to 2.5 megohms even with such a method.
  • the present invention can reduce the effective internal impedance to a lower level without requiring such a control circuit, and when such a circuit is combined with the device, the effective internal impedance can be reduced to a further lower level of the order of 0.7 to 1.7 megohms.
  • a so-called fifth harmonic tuning system for example known from US. Pat. No. 3,500,116, in which a fifth harmonic is superposed on a fundamental harmonic, is commonly employed as a means for reducing the internal impedance of high voltage transformer devices.
  • the presentinvention will be compared with a high voltage transformer device adapted to operate with such a system.
  • the ratio of the voltage E appearing across the high-voltage coil to the voltage E appearing across the low-voltage coil is given y where N is the number of turns of the high-voltage coil, N is the number of turns of the low-voltage coil, and 01 0. It is thus difficult to obtain a sufficiently high output voltage;
  • the ratio of the voltage E, appearing across the high-voltage coil to the voltage E appearing across the low-voltage coil is given by where N is the number of turns of the high-voltage coil, M, is the number of turns of the low-voltage coil, and a 0.
  • the high voltage transformer device employing the fifth harmonic tuning system operates with poor efficiency due to the fact that a larger power input is the order of 1.2 to 2.5 megohms, whereas the value required than when such a system is not employed provided that the load is the same.
  • the present invention is entirely free from such a problem.
  • a focusing voltage of satisfactory trackability can be supplied from the high voltage transformer device of the present invention.
  • the focusing voltage E ⁇ , in the no load state is given by m sra
  • the high voltage output E of the sys former in the loaded state.
  • 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,
  • the high-voltage side winding of said highvoltage 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.
  • 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 V /n between the voltage V induced in the high-voltage side winding of said high-voltage coil and the number of turns n thereof is smaller than the ratio VL/n between the voltage V induced in the low-voltage side winding of said highvoltage coil and the number of turns n thereof, hence 3.
  • 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 easing is filled with insulating oil.
  • a high voltage transformer device as claimed in claim 1, wherein said high voitage coil includes a split winding.
  • a high voltage transformer device as claimed in claim 6, wherein said high voltage coil includes a split winding.
  • 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 ur/ C (NH/NL), where 14.
  • a high voltage transformer device as claimed in claim l4 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.
  • 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.
  • 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 12 36.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
US00306406A 1971-11-18 1972-11-14 High voltage transformer device in a horizontal deflection circuit Expired - Lifetime US3813574A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP46092893A JPS5138046B2 (enrdf_load_stackoverflow) 1971-11-18 1971-11-18
JP46095599A JPS5211412B2 (enrdf_load_stackoverflow) 1971-11-27 1971-11-27
JP46099758A JPS5113846B2 (enrdf_load_stackoverflow) 1971-12-08 1971-12-08
JP47009273A JPS527525B2 (enrdf_load_stackoverflow) 1972-01-24 1972-01-24

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US (1) US3813574A (enrdf_load_stackoverflow)
BE (1) BE791522A (enrdf_load_stackoverflow)
CA (1) CA966933A (enrdf_load_stackoverflow)
DE (2) DE2264451C3 (enrdf_load_stackoverflow)
FR (1) FR2165886B1 (enrdf_load_stackoverflow)
GB (1) GB1387647A (enrdf_load_stackoverflow)
NL (1) NL167264C (enrdf_load_stackoverflow)

Cited By (20)

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US4027200A (en) * 1974-10-21 1977-05-31 Sony Corporation High voltage generating circuit
US4039924A (en) * 1975-12-29 1977-08-02 General Electric Company High voltage winding assembly with improved regulation
US4066955A (en) * 1975-12-29 1978-01-03 General Electric Company High voltage transformer winding assembly with multiple frequency tuning
DE2841885A1 (de) * 1977-09-26 1979-03-29 Murata Manufacturing Co Zeilentransformator zur verwendung in einer horizontalablenkschaltung
US4204263A (en) * 1977-04-20 1980-05-20 Denki Onkyo Co., Ltd. Flyback transformer
DE2948365A1 (de) * 1978-11-30 1980-06-04 Rca Corp Ruecklauftransformator
US4246636A (en) * 1977-09-27 1981-01-20 Denki Onkyo Co., Ltd. Flyback transformer having terminal pins for connection to printed circuit boards
US4388568A (en) * 1979-11-02 1983-06-14 Licentia Patent-Verwaltungs-Gmbh Line end stage including transformer for a television receiver
US4406978A (en) * 1980-01-21 1983-09-27 Licentia Patent-Verwaltungs-Gmbh Horizontal deflection output transformer for a television receiver
US4652810A (en) * 1985-01-29 1987-03-24 Yokogawa Hokushin Electric Corporation Subminiature current transformer
FR2607618A1 (fr) * 1986-11-14 1988-06-03 Hitachi Ltd Transformateur de retour de spot perfectionne et dispositif de visualisation a tube a rayons cathodiques muni d'un tel transformateur
EP0196857A3 (en) * 1985-03-29 1988-08-03 RCA Thomson Licensing Corporation Transformer winding arrangement especially for video display
US4825129A (en) * 1985-05-03 1989-04-25 Rca Licensing Corporation CRT focus tracking arrangement
US4967121A (en) * 1987-05-27 1990-10-30 Rca Licensing Corporation Isolating high voltage transformer for video apparatus
US5049847A (en) * 1988-12-19 1991-09-17 Hitachi, Ltd. Deflection yoke with auxiliary coils for stray line radiation suppression
US5225803A (en) * 1990-07-06 1993-07-06 U.S. Philips Corporation High voltage transformer, notably for an x-ray apparatus
EP0710964A3 (de) * 1994-11-07 1996-09-04 Vogt Electronic Ag Transformator zum Erzeugen zweier Hochspannungen von untereinander hoher Potentialdifferenz
US5844793A (en) * 1995-03-27 1998-12-01 Deutsche Thomson Brandt Gmbh High-voltage transformer for a televison receiver including separated partial windings tuned to different harmonics
US6188303B1 (en) * 1997-07-09 2001-02-13 Murata Manufacturing Co., Ltd. Flyback transformer
US20120274328A1 (en) * 2011-04-28 2012-11-01 Hanington Gary J Axial high voltage transformer with signal pass-through ability

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US3445747A (en) * 1965-04-16 1969-05-20 Electricite De France High-voltage power conversion assembly composed of a polyphase transformer combined with a plurality of sets of controlled rectifiers
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US3546629A (en) * 1968-09-18 1970-12-08 Gen Electric Self-oscillating sweep circuit using harmonic ringing in feedback winding
US3564386A (en) * 1968-12-27 1971-02-16 Westinghouse Electric Corp Power supply for converting high voltage alternating current into high voltage direct current

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US2328470A (en) * 1942-10-20 1943-08-31 Gen Electric Dynamoelectric machine coil support
US3049640A (en) * 1955-02-16 1962-08-14 Telefunken Gmbh Self regulating deflection circuits
US2976504A (en) * 1955-11-22 1961-03-21 Bbc Brown Boveri & Cie Arrangement for preventing discharges along the high-voltage windings of a high-voltage transformer
US3428853A (en) * 1964-04-04 1969-02-18 Hitachi Ltd Electron beam deflection device for use in connection with cathode-ray tubes of television receivers and the like
US3445747A (en) * 1965-04-16 1969-05-20 Electricite De France High-voltage power conversion assembly composed of a polyphase transformer combined with a plurality of sets of controlled rectifiers
US3369166A (en) * 1965-10-22 1968-02-13 Westinghouse Electric Corp Combination transformer-rectifier apparatus
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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027200A (en) * 1974-10-21 1977-05-31 Sony Corporation High voltage generating circuit
US4039924A (en) * 1975-12-29 1977-08-02 General Electric Company High voltage winding assembly with improved regulation
US4066955A (en) * 1975-12-29 1978-01-03 General Electric Company High voltage transformer winding assembly with multiple frequency tuning
US4204263A (en) * 1977-04-20 1980-05-20 Denki Onkyo Co., Ltd. Flyback transformer
DE2841885A1 (de) * 1977-09-26 1979-03-29 Murata Manufacturing Co Zeilentransformator zur verwendung in einer horizontalablenkschaltung
FR2404358A1 (fr) * 1977-09-26 1979-04-20 Murata Manufacturing Co Transformateur de retour de balayage de cathoscope
US4229786A (en) * 1977-09-26 1980-10-21 Murata Manufacturing Co., Inc. Fly-back transformer with a low ringing ratio
USRE31119E (en) * 1977-09-26 1983-01-04 Murata Mfg., Co. Ltd. Fly-back transformer with a low ringing ratio
US4246636A (en) * 1977-09-27 1981-01-20 Denki Onkyo Co., Ltd. Flyback transformer having terminal pins for connection to printed circuit boards
DE2948365A1 (de) * 1978-11-30 1980-06-04 Rca Corp Ruecklauftransformator
US4388568A (en) * 1979-11-02 1983-06-14 Licentia Patent-Verwaltungs-Gmbh Line end stage including transformer for a television receiver
US4406978A (en) * 1980-01-21 1983-09-27 Licentia Patent-Verwaltungs-Gmbh Horizontal deflection output transformer for a television receiver
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Also Published As

Publication number Publication date
FR2165886A1 (enrdf_load_stackoverflow) 1973-08-10
NL167264C (nl) 1981-11-16
NL7215629A (enrdf_load_stackoverflow) 1973-05-22
BE791522A (fr) 1973-03-16
DE2264451C3 (de) 1975-10-09
DE2256006A1 (de) 1973-05-30
GB1387647A (en) 1975-03-19
DE2264451B2 (de) 1975-02-20
NL167264B (nl) 1981-06-16
DE2256006B2 (de) 1973-12-06
FR2165886B1 (enrdf_load_stackoverflow) 1977-08-26
DE2256006C3 (de) 1974-06-27
CA966933A (en) 1975-04-29
DE2264451A1 (de) 1973-10-11

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