GB643150A - Improvements relating to beam-deflecting circuits for cathode ray tubes - Google Patents

Improvements relating to beam-deflecting circuits for cathode ray tubes

Info

Publication number
GB643150A
GB643150A GB5525/47A GB552547A GB643150A GB 643150 A GB643150 A GB 643150A GB 5525/47 A GB5525/47 A GB 5525/47A GB 552547 A GB552547 A GB 552547A GB 643150 A GB643150 A GB 643150A
Authority
GB
United Kingdom
Prior art keywords
circuit
deflecting
damping
voltage
feb
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
GB5525/47A
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Publication of GB643150A publication Critical patent/GB643150A/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

Landscapes

  • Microwave Tubes (AREA)
  • Details Of Television Scanning (AREA)

Abstract

643,150. Sawtooth generating circuits. RADIO CORPORATION OF AMERICA. Feb. 26, 1947, No. 5525. Convention date, Feb. 26, 1946. [Class 40 (vi)] In a magnetic deflecting circuit for a cathoderay tube in which parasitic H.F. oscillations are reduced by a damping circuit, the amplitude of the remaining parasities is further reduced by varying the impedance of the damping circuit by means of a control voltage derived from an auxiliary winding associated with the inductive output circuit of the generator. In the Figure the amplifier stage 10 feeds deflecting coils 14 via an output transformer 16 and a damping valve 22. The impedance of the damping valve is varied by means of a control voltage which is derived from the series connection of the voltage across the deflecting coils and that produced across an auxiliary winding 50 on the output transformer, this resultant voltage being differentiated by the network 30, 40. Specifications 566,835 and 614,418 are referred to.
GB5525/47A 1946-02-26 1947-02-26 Improvements relating to beam-deflecting circuits for cathode ray tubes Expired GB643150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650372A US2460540A (en) 1946-02-26 1946-02-26 Control circuit

Publications (1)

Publication Number Publication Date
GB643150A true GB643150A (en) 1950-09-15

Family

ID=24608612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5525/47A Expired GB643150A (en) 1946-02-26 1947-02-26 Improvements relating to beam-deflecting circuits for cathode ray tubes

Country Status (2)

Country Link
US (1) US2460540A (en)
GB (1) GB643150A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL83733C (en) * 1949-11-30
US2629067A (en) * 1950-07-18 1953-02-17 Teletone Radio Corp Deflection circuits for television receivers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2315073A (en) * 1941-05-01 1943-03-30 Bell Telephone Labor Inc Electric circuits
US2396476A (en) * 1942-05-30 1946-03-12 Rca Corp Cathode-ray beam deflecting circuits
US2320916A (en) * 1942-06-19 1943-06-01 Raytheon Mfg Co Controlled ingition discharge tube system
US2382822A (en) * 1942-06-30 1945-08-14 Rca Corp Cathode ray beam deflecting circuits
US2370426A (en) * 1943-03-29 1945-02-27 Rca Corp Electron tube circuit

Also Published As

Publication number Publication date
US2460540A (en) 1949-02-01

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