GB617878A - Improvements in and relating to capacitor discharge and like circuits - Google Patents

Improvements in and relating to capacitor discharge and like circuits

Info

Publication number
GB617878A
GB617878A GB24821/45A GB2482145A GB617878A GB 617878 A GB617878 A GB 617878A GB 24821/45 A GB24821/45 A GB 24821/45A GB 2482145 A GB2482145 A GB 2482145A GB 617878 A GB617878 A GB 617878A
Authority
GB
United Kingdom
Prior art keywords
capacitor
sept
cathode
charged
discharged
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
GB24821/45A
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.)
Philco Radio and Television Corp
Original Assignee
Philco Radio and Television Corp
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 Philco Radio and Television Corp filed Critical Philco Radio and Television Corp
Publication of GB617878A publication Critical patent/GB617878A/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
    • H03K4/12—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 voltage is produced across a capacitor
    • 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
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction

Landscapes

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

Abstract

617,878. Cathode-ray oscillographs. PHILCO RADIO & TELEVISION CORPORATION. Sept. 25, 1945, No. 24821. Convention date, Sept. 27, 1944. Drawings to Specification. [Class 37] [Also in Group XL (c)] Each pair of the deflecting plates of a cathode-ray tube having a radial scan is energized from a capacitor circuit, the capacitor being charged or discharged to restore the capacitor to a normal level by a triggering potential applied to a valve. The capacitor is charged (or discharged) from an A.C. source of frequency low compared with the repetition frequency of the triggering signal so that a number of sawtooth waves are generated during each half-cycle. The A.C. sources for the time base generators are arranged to be in quadrature, Figs. 3 and 4 (not shown). The circuit may employ a screen grid valve operating as a dynatron (see Group XI (c)).
GB24821/45A 1944-09-27 1945-09-25 Improvements in and relating to capacitor discharge and like circuits Expired GB617878A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US556049A US2444330A (en) 1944-09-27 1944-09-27 Saw-tooth wave generator

Publications (1)

Publication Number Publication Date
GB617878A true GB617878A (en) 1949-02-14

Family

ID=24219685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24821/45A Expired GB617878A (en) 1944-09-27 1945-09-25 Improvements in and relating to capacitor discharge and like circuits

Country Status (2)

Country Link
US (1) US2444330A (en)
GB (1) GB617878A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2646565A (en) * 1945-09-18 1953-07-21 Us Navy Cathode-ray tube sweep circuit

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL42984C (en) *
US1387984A (en) * 1915-08-30 1921-08-16 Gen Electric Negative resistance
US2246918A (en) * 1931-09-26 1941-06-24 Westinghouse Electric & Mfg Co Unidirectional scanning
US2093781A (en) * 1931-11-24 1937-09-21 Rca Corp Oscillation circuit
GB457886A (en) * 1936-04-08 1936-12-08 Baird Television Ltd Improvements in or relating to thermionic valve and the like circuits
US2179105A (en) * 1937-06-25 1939-11-07 Rca Corp Current impulse generating circuit
US2287540A (en) * 1940-08-12 1942-06-23 Clayton Mark & Company Surface welding
US2312761A (en) * 1940-09-26 1943-03-02 Rca Corp Sweep circuit generator for cathode ray tubes
US2287543A (en) * 1940-12-18 1942-06-23 Clayton Mark & Company Welding method and apparatus
US2313966A (en) * 1941-03-31 1943-03-16 Rca Corp Cathode ray tube system
US2306230A (en) * 1942-03-30 1942-12-22 Gen Electric Electric valve translating system
US2403716A (en) * 1944-02-07 1946-07-09 Stromberg Carlson Co Combined amplifier and power supply circuit

Also Published As

Publication number Publication date
US2444330A (en) 1948-06-29

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