GB748429A - Improvements in or relating to circuit arrangements for generating sawtooth currents - Google Patents

Improvements in or relating to circuit arrangements for generating sawtooth currents

Info

Publication number
GB748429A
GB748429A GB28440/53A GB2844053A GB748429A GB 748429 A GB748429 A GB 748429A GB 28440/53 A GB28440/53 A GB 28440/53A GB 2844053 A GB2844053 A GB 2844053A GB 748429 A GB748429 A GB 748429A
Authority
GB
United Kingdom
Prior art keywords
inductors
voltage
transformer
coils
coil
Prior art date
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
Application number
GB28440/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Telefunken AG filed Critical Telefunken AG
Publication of GB748429A publication Critical patent/GB748429A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
    • H04N3/185—Maintaining dc voltage constant
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/223—Controlling dimensions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

748,429. Inductors; rectifying. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. Oct. 15, 1953 [Oct. 15, 1952; Aug. 17, 1953], No. 28440/63. Class 38 (2). [Also in Group XL (c)] In a circuit of the " resonant return " type for generating a saw-tooth current in an inductance coil, and in which the coil is fed from a driver valve through a transformer from which an E.H.T. voltage is derived by rectifying voltage peaks occurring during the fly-back, the driver valve is coupled to the transformer by connecting the valve to the common point of two inductors connected in series across a portion of the transformer, at least one of the inductors being variable. Fig. 1 shows a conventional circuit comprising deflection coils 4, a damping diode 2, an H.T. boost capacitor 1 and an E.H.T. rectifier 7 modified in that the driver valve 5 is coupled to the scanning transformer 12 through coils 8 and 9. By varying the inductances of these coils together or separately it may be arranged that the sawtooth current amplitude and the E.H.T. voltage may be varied independently of each other or conjointly such that a variation of the E.H.T. voltage is effected without changing the deflection amplitude. The coils may, as in Fig. 5, have a common adjustable core and be such their total inductance remains constant, coil 8 being movable axially to vary the total inductance. Capacitances may be connected across the inductors to assist in obtaining the desired change of E.H.T. voltage (Fig. 7, not shown) and the variable inductors may comprise a fixed and a variable inductor in parallel (Fig. 6, not shown). Specification 482,370, [Group XL], is referred to.
GB28440/53A 1952-10-15 1953-10-15 Improvements in or relating to circuit arrangements for generating sawtooth currents Expired GB748429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE748429X 1952-10-15

Publications (1)

Publication Number Publication Date
GB748429A true GB748429A (en) 1956-05-02

Family

ID=6648944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28440/53A Expired GB748429A (en) 1952-10-15 1953-10-15 Improvements in or relating to circuit arrangements for generating sawtooth currents

Country Status (5)

Country Link
US (1) US2797359A (en)
DE (1) DE957952C (en)
FR (1) FR1090744A (en)
GB (1) GB748429A (en)
NL (1) NL182059B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113237A (en) * 1960-05-24 1963-12-03 Rca Corp Adjustable voltage supply

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL297495A (en) * 1962-09-20
GB2166017A (en) * 1984-10-19 1986-04-23 Philips Electronic Associated Line output circuit for generating a line frequency sawtooth current
US20050150413A1 (en) * 2003-12-12 2005-07-14 Lord Steven M. Firearms cartridge with rectangular, rounded oblong, or elliptical casing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523108A (en) * 1948-04-30 1950-09-19 Rca Corp Deflection of electron beams
NL154990C (en) * 1949-07-29
US2656486A (en) * 1950-09-28 1953-10-20 Du Mont Allen B Lab Inc Stabilized television circuit
US2627052A (en) * 1951-04-18 1953-01-27 Stromberg Carlson Co Television receiver horizontal deflection circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113237A (en) * 1960-05-24 1963-12-03 Rca Corp Adjustable voltage supply

Also Published As

Publication number Publication date
US2797359A (en) 1957-06-25
DE957952C (en) 1957-01-24
FR1090744A (en) 1955-04-04
NL182059B (en)

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