GB424429A - Oscillation generators for scanning in television and like systems - Google Patents

Oscillation generators for scanning in television and like systems

Info

Publication number
GB424429A
GB424429A GB23229/33A GB2322933A GB424429A GB 424429 A GB424429 A GB 424429A GB 23229/33 A GB23229/33 A GB 23229/33A GB 2322933 A GB2322933 A GB 2322933A GB 424429 A GB424429 A GB 424429A
Authority
GB
United Kingdom
Prior art keywords
condenser
resistance
potentiometer
grid
amplifier
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
GB23229/33A
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 GB424429A publication Critical patent/GB424429A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
    • H03K6/02—Amplifying pulses
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/92—Generating pulses having essentially a finite slope or stepped portions having a waveform comprising a portion of a sinusoid

Abstract

424,429. Generating circuits using gas-discharge tubes. RADIOAKT.-GES., D. S. LOEWE, 10, Wiesenweg, Steglitz, and SCHLESINGER, K., 39, Friedrichstrasse, Friedrichshagen, both in Berlin. Aug. 21, 1933, No. 23229. Convention date, Aug. 30, 1932. [Class 40 (v)] The condenser 9 of a relaxation oscillation. generator is charged from a D.C. source 1 associated with a glow-discharge device 3. The source 1 feeds the device 3 through a series resistance 2 preferably of the known ferric-hydrogen type, and the device 3 supplies a constant voltage which charges the condenser 9 through a variable resistance 7 and inductance 8. The condenser is periodically discharged through a glow lamp 10, the grid electrode of which is negatively biassed by connection through a resistance 22 to the cathode of the device 3, whilst the cathode of the lamp 10 is connected to an intermediate electrode of the device 3. The voltage on the condenser 9 is applied through a condenser 14 and potentiometer 13 to the grid of a pentode or other amplifier 23, the plate and screen voltage of which are supplied from the device 3. The amplifier grid is biassed from a potentiometer 15 connected across two electrodes of the device 3. The amplifier 23 operates the deflecting-electrodes of one or more cathoderay television apparatus, the potentiometer 13 regulating the size of the picture, and potentiometer 15 its position on the screen. The inductance 8 in the charging circuit, or an impedance network substituted therefor, gives a straight-line charging curve over a long range. The same glow-discharge device may feed two relaxation circuits, one generating the picture frequency, the other the line frequency. The latter may be adjusted by varying the resistance 7. Synchronizing impulses are applied to the grid of the lamp 10 through a condenser 20 and resistance 21.
GB23229/33A 1932-08-30 1933-08-21 Oscillation generators for scanning in television and like systems Expired GB424429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE424429X 1932-08-30

Publications (1)

Publication Number Publication Date
GB424429A true GB424429A (en) 1935-02-21

Family

ID=6476679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23229/33A Expired GB424429A (en) 1932-08-30 1933-08-21 Oscillation generators for scanning in television and like systems

Country Status (3)

Country Link
US (1) US2096982A (en)
FR (1) FR760108A (en)
GB (1) GB424429A (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
NL62083C (en) * 1936-02-04
GB558163A (en) * 1942-06-19 1943-12-23 Standard Telephones Cables Ltd Improvements in or relating to electrical relaxation oscillators
US2422231A (en) * 1944-12-06 1947-06-17 Union Switch & Signal Co Pulse generating receiver for coded carrier signals
US2671858A (en) * 1946-04-03 1954-03-09 Fong Arthur Linear sweep generator
US2845579A (en) * 1955-01-19 1958-07-29 Bendix Aviat Corp Frequency meter

Also Published As

Publication number Publication date
FR760108A (en) 1934-02-16
US2096982A (en) 1937-10-26

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