GB423394A - Improvements in relaxation oscillation generators - Google Patents

Improvements in relaxation oscillation generators

Info

Publication number
GB423394A
GB423394A GB12578/33A GB1257833A GB423394A GB 423394 A GB423394 A GB 423394A GB 12578/33 A GB12578/33 A GB 12578/33A GB 1257833 A GB1257833 A GB 1257833A GB 423394 A GB423394 A GB 423394A
Authority
GB
United Kingdom
Prior art keywords
discharge
grid
resistance
tube
controlled
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
GB12578/33A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB423394A publication Critical patent/GB423394A/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
    • H03K4/86—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements gas-filled tubes or spark-gaps
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H04N5/067—Arrangements or circuits at the transmitter end
    • H04N5/073—Arrangements or circuits at the transmitter end for mutually locking plural sources of synchronising signals, e.g. studios or relay stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Lasers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Special Spraying Apparatus (AREA)
  • Particle Accelerators (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

423,394. Valve generating circuits. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. May 1, 1933, No. 12578. Convention date, June 1, 1932. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 3, 1933.] [Class 40 (v)] Relates to grid-controlled glow-discharge relaxation-oscillation generators used for controlling the scanning frequencies in television. According to the invention the period of discharge is kept constant by inserting a resistance in the discharge circuit of the grid-controlled discharge tube. In addition an auxiliary control voltage may be applied to the grid of the discharge tube as described in Specification 423,583. The generating tube 1 is charged through a screen-grid valve 38, the control potential of which is tapped off from a potentiometer 25 in the H.T. supply network. The synchronizing signals are applied to the grid of the discharge tube 1 from the terminal 31 together with a control bias from a resistance 21. The tilting oscillations are produced by the discharge of the condensers 17, 18, or 19, through the discharge tube 1 and a series resistance 28, and are fed to the cathode ray tube via the terminals 29, 30. The frequency of the oscillations is controlled by the resistance 28, and by the choice of the condensers 17, 18, and 19. The oscillator is contained in a screening case, and the circuit components are also individually screened, as shown in dotted lines.
GB12578/33A 1932-05-02 1933-05-01 Improvements in relaxation oscillation generators Expired GB423394A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE423583X 1932-05-02
DE423394X 1932-06-01
US668940A US2083202A (en) 1932-05-02 1933-05-02 Arrangement for generating tilting oscillations
US711572A US2188288A (en) 1932-05-02 1934-02-16 Arrangement for generating tilting oscillations
DE453011X 1934-07-20

Publications (1)

Publication Number Publication Date
GB423394A true GB423394A (en) 1935-02-01

Family

ID=32074678

Family Applications (3)

Application Number Title Priority Date Filing Date
GB12578/33A Expired GB423394A (en) 1932-05-02 1933-05-01 Improvements in relaxation oscillation generators
GB12576/33A Expired GB423583A (en) 1932-05-02 1933-05-01 Improvements in television relaxation oscillation generator systems
GB19683/35A Expired GB453011A (en) 1932-05-02 1935-07-10 Improvements in relaxation oscillation generators

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB12576/33A Expired GB423583A (en) 1932-05-02 1933-05-01 Improvements in television relaxation oscillation generator systems
GB19683/35A Expired GB453011A (en) 1932-05-02 1935-07-10 Improvements in relaxation oscillation generators

Country Status (3)

Country Link
US (3) US2083202A (en)
FR (2) FR755061A (en)
GB (3) GB423394A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE407565A (en) * 1934-03-17
US2443100A (en) * 1945-03-13 1948-06-08 Electrons Inc Electronic device
US2582247A (en) * 1945-10-16 1952-01-15 Jr Hunter C Goodrich Standard impulse noise generator
US2740043A (en) * 1952-03-03 1956-03-27 John E Williams Electronic linear sweep generator
US2845529A (en) * 1953-04-06 1958-07-29 James O Weldon Protective circuits
US3281717A (en) * 1961-06-23 1966-10-25 Royson Engineering Company Pulse generator having repetition rate linearly responsive to trigger signal amplitude

Also Published As

Publication number Publication date
US2113163A (en) 1938-04-05
US2188288A (en) 1940-01-23
GB423583A (en) 1935-02-01
FR755061A (en) 1933-11-17
FR46450E (en) 1936-06-03
US2083202A (en) 1937-06-08
GB453011A (en) 1936-09-03

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