GB540827A - Improvements in braking-field electric oscillatory circuits - Google Patents

Improvements in braking-field electric oscillatory circuits

Info

Publication number
GB540827A
GB540827A GB5856/40A GB585640A GB540827A GB 540827 A GB540827 A GB 540827A GB 5856/40 A GB5856/40 A GB 5856/40A GB 585640 A GB585640 A GB 585640A GB 540827 A GB540827 A GB 540827A
Authority
GB
United Kingdom
Prior art keywords
voltage
changes
circuits
braking
compensating
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
GB5856/40A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB540827A publication Critical patent/GB540827A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
    • H03B9/00—Generation of oscillations using transit-time effects
    • H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
    • H03B9/02—Generation of oscillations using transit-time effects using discharge tubes using a retarding-field tube
    • 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
    • H04N5/0675—Arrangements or circuits at the transmitter end for mixing the synchronising signals with the picture signal or mutually
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

540,827. Thermionic generating circuits; circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 1, 1940, No. 5856. Convention date, March 31, 1939. [Class 40 (v)] In a Barkhausen-Kurtz oscillator frequency variation due to supply changes is compensated by varying the voltage of another valve electrode through a direct current amplifier. Fig. 2 shows an arrangement in which control is applied to a separate frequency controlling grid, the compensating voltage being derived through an amplifier B from resistances R1, R2, connected across the high tension supply. The input may be a dipole connected to the Lecher wire system L. Alternatively the voltage control may be of the filament heating, Fig. 5 (not shown), or changes in filament voltage may cause compensating changes in plate voltage, Fig. 6 (not shown).
GB5856/40A 1939-03-31 1940-04-01 Improvements in braking-field electric oscillatory circuits Expired GB540827A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US540827XA 1939-03-31 1939-03-31

Publications (1)

Publication Number Publication Date
GB540827A true GB540827A (en) 1941-10-31

Family

ID=21988688

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5856/40A Expired GB540827A (en) 1939-03-31 1940-04-01 Improvements in braking-field electric oscillatory circuits

Country Status (1)

Country Link
GB (1) GB540827A (en)

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