US2694784A - Anode voltage supply for television receivers - Google Patents

Anode voltage supply for television receivers Download PDF

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Publication number
US2694784A
US2694784A US269282A US26928252A US2694784A US 2694784 A US2694784 A US 2694784A US 269282 A US269282 A US 269282A US 26928252 A US26928252 A US 26928252A US 2694784 A US2694784 A US 2694784A
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US
United States
Prior art keywords
voltage
windings
deflecting
anode voltage
voltage supply
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US269282A
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English (en)
Inventor
Reinhard Wolfgang
Rappold Armin
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International Standard Electric Corp
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International Standard Electric Corp
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Publication date
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Publication of US2694784A publication Critical patent/US2694784A/en
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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

Definitions

  • the saw-toothshaped deflection current applied to the deflection coil produces voltage peaks of several thousand volts upon the rapid return of the wave to normal voltage and the voltage thus derived is rectified and amplified as the anode voltage for the picture tube.
  • high tension diodes are employed as the rectifiers in the system. Because the cathodes of these diodes operate at high potential the problem of heating the cathodes has caused certain difficulties which make the insulation expensive since it may require specially designed heating transformers.
  • the deflection coils are constructed to withstand higher voltages or if an adequate voltage multiplier circuit is used then the voltage transformer need not be used. However, in the known circuits a special heating transformer must be supplied for the high voltage diodes in this case.
  • a system which avoids these difliculties by taking the heater voltage for the diodes from the deflecting coil system.
  • the arrangement in accordance with the invention may be used with coil systems in which yoke windings are arranged so that those parts of the windings not contributing to the deflection are arranged in a plane perpendicular with respect to the axis and partially surround the valve neck.
  • the deflecting coil system is of the type which consists of a magnetic yoke body encircling the cathode ray beam upon which windings encircling the yoke body are mounted.
  • This latter system has the advantage over the first described deflection system in that the deflections in the two co-ordinates are produced without overlapping coil windings so that the coil system may be constructed with a very high voltage rating.
  • the line sweep generator may be dimensioned so that relatively high return peaks are permissible so that a single voltage doubling circuit will be suflicient for the high tension anode volt- 2,694,784 Patented Nov. 16, 1954 "ice age generation without the necessity of using a voltage transformer. Furthermore, in this type of system the arrangement of the heater winding is more simple.
  • Figure 1 is a plan view of a deflection coil system in accordance with this invention with one of the supporting plates removed, and
  • Figure 2 is a sectional view of the system of Fig. 1 taken along a section line 22.
  • two plates 1 preferably of insulating material for supporting the entire structure arrangement, which may consist of the deflecting coil system of the high voltage deflecting circuit.
  • Additional windings 5 for the generation of heater voltage for high voltage diode 6 are mounted on the same ring core 2, the diodes 6 being also fastened between supporting plates 1.
  • the other circuit elements such as the condenser indicated at 7, and the resistor shown at 8 are mounted on the same supporting plates 1.
  • circuit elements Which constitute the desired voltage doubling circuit for the diode output are all included with the deflection coil system in a common structural unit.
  • the specific circuit connections are not fully illustrated herein as they do not constitute essential elements of the present invention.
  • the connections of the horizontal sweep windings and the heater coils 5 to the diode cathode is diagrammatically shown in Fig. 1.
  • a television deflection circuit for use with a cathode ray tube, comprising a yoke of magnetic material, a deflecting coil system comprising deflecting windings wound around said yoke on diametrically opposed sides thereof, means to apply a saw-tooth deflection wave to said windings, a rectifier having a cathode and a cathode heater for rectifying the high voltage peaks produced by the abrupt return of said sawtooth waves, means for providing the heater voltage for said rectifier comprising an auxiliary coil wound around said core in coupling relation with said windings but substantially spaced therefrom to afford a high voltage insulating gap therebetween, and means for connecting said auxiliary coil with said heater.
  • windings are each composed of a pair of partial windings, said coil being positioned between the partial windings of pairs of windings.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
US269282A 1951-02-02 1952-01-31 Anode voltage supply for television receivers Expired - Lifetime US2694784A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE299129X 1951-02-02

Publications (1)

Publication Number Publication Date
US2694784A true US2694784A (en) 1954-11-16

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ID=6091185

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US269282A Expired - Lifetime US2694784A (en) 1951-02-02 1952-01-31 Anode voltage supply for television receivers

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US (1) US2694784A (is")
BE (1) BE516811A (is")
CH (1) CH299129A (is")

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2898506A (en) * 1956-02-21 1959-08-04 Louis W Parker High voltage generator for cathode ray tubes
US2901714A (en) * 1955-11-29 1959-08-25 William R Baker Transformer
US2934814A (en) * 1954-06-04 1960-05-03 Williams David Method of making an electronic components package
US2980815A (en) * 1957-08-05 1961-04-18 Rca Corp Deflection yoke assembly for cathode ray tubes
US2991392A (en) * 1958-10-02 1961-07-04 Telefunken Gmbh Deflection yoke assembly

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077574A (en) * 1934-04-21 1937-04-20 Rca Corp Television receiver
US2164891A (en) * 1935-08-20 1939-07-04 Telefunken Gmbh Electromagnetic cathode ray deflection apparatus
US2228821A (en) * 1938-10-01 1941-01-14 Gen Electric Magnetic sweep coil circuit
US2261645A (en) * 1939-05-11 1941-11-04 Gen Electric Protective system
US2395966A (en) * 1943-01-21 1946-03-05 Stromberg Carlson Telephone Plan position indicator system
US2406740A (en) * 1944-02-14 1946-09-03 Farnsworth Television & Radio Keystone correction apparatus
US2414925A (en) * 1944-01-26 1947-01-28 Farnsworth Television & Radio Scanning and focusing yoke
US2428947A (en) * 1945-01-31 1947-10-14 Rca Corp Deflection device for cathode-ray tubes
US2539492A (en) * 1939-06-06 1951-01-30 Int Standard Electric Corp Focusing and deflecting means for cathode-ray tubes
US2562941A (en) * 1946-03-20 1951-08-07 Standard Telephones Cables Ltd Sweep generator
US2573017A (en) * 1945-11-06 1951-10-30 Leland J Haworth Cathode-ray tube apparatus for producing sector scan

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077574A (en) * 1934-04-21 1937-04-20 Rca Corp Television receiver
US2164891A (en) * 1935-08-20 1939-07-04 Telefunken Gmbh Electromagnetic cathode ray deflection apparatus
US2228821A (en) * 1938-10-01 1941-01-14 Gen Electric Magnetic sweep coil circuit
US2261645A (en) * 1939-05-11 1941-11-04 Gen Electric Protective system
US2539492A (en) * 1939-06-06 1951-01-30 Int Standard Electric Corp Focusing and deflecting means for cathode-ray tubes
US2395966A (en) * 1943-01-21 1946-03-05 Stromberg Carlson Telephone Plan position indicator system
US2414925A (en) * 1944-01-26 1947-01-28 Farnsworth Television & Radio Scanning and focusing yoke
US2406740A (en) * 1944-02-14 1946-09-03 Farnsworth Television & Radio Keystone correction apparatus
US2428947A (en) * 1945-01-31 1947-10-14 Rca Corp Deflection device for cathode-ray tubes
US2573017A (en) * 1945-11-06 1951-10-30 Leland J Haworth Cathode-ray tube apparatus for producing sector scan
US2562941A (en) * 1946-03-20 1951-08-07 Standard Telephones Cables Ltd Sweep generator

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2934814A (en) * 1954-06-04 1960-05-03 Williams David Method of making an electronic components package
US2901714A (en) * 1955-11-29 1959-08-25 William R Baker Transformer
US2898506A (en) * 1956-02-21 1959-08-04 Louis W Parker High voltage generator for cathode ray tubes
US2980815A (en) * 1957-08-05 1961-04-18 Rca Corp Deflection yoke assembly for cathode ray tubes
US2991392A (en) * 1958-10-02 1961-07-04 Telefunken Gmbh Deflection yoke assembly

Also Published As

Publication number Publication date
BE516811A (is")
CH299129A (de) 1954-05-31

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