GB574978A - Improvements in or relating to electrical combining circuit arrangements - Google Patents

Improvements in or relating to electrical combining circuit arrangements

Info

Publication number
GB574978A
GB574978A GB2167843A GB2167843A GB574978A GB 574978 A GB574978 A GB 574978A GB 2167843 A GB2167843 A GB 2167843A GB 2167843 A GB2167843 A GB 2167843A GB 574978 A GB574978 A GB 574978A
Authority
GB
United Kingdom
Prior art keywords
circuits
sources
signal
resistances
resistance
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
GB2167843A
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.)
Individual
Original Assignee
Individual
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
Priority to NL68483D priority Critical patent/NL68483C/xx
Application filed by Individual filed Critical Individual
Priority to GB2167843A priority patent/GB574978A/en
Publication of GB574978A publication Critical patent/GB574978A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
    • H04H60/04—Studio equipment; Interconnection of studios
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
    • H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
    • 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
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Amplifiers (AREA)

Abstract

574,978. Signal combining circuit. WHITE, E. L. C. Dec. 24, 1943, No. 21678. [Class 40 (iv)] [Also in Group XL] Signals from two or more sources 1, 2 such as microphones or television cameras are combined in such a way that each signal circuit is unaffected by the presence of the others by connecting the signal circuits in parallel to the input circuit of a tube 5 having a feed-back resistance 12 connected between its output and input circuits so as to reduce its effective input resistance to a value small compared with the resistance of any of the signal circuits and preferably compared with that of all of such circuits in parallel. Resistances 3 and 4 may be adjustable or may be fixed and connected to the sliders of potentiometers connected across the sources. These resistances may be the internal resistances of the sources. Blocking condensers 6, 11 are omitted when the currents to be mixed have direct current components, the grid of the valve being suitably biassed.
GB2167843A 1943-12-24 1943-12-24 Improvements in or relating to electrical combining circuit arrangements Expired GB574978A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL68483D NL68483C (en) 1943-12-24
GB2167843A GB574978A (en) 1943-12-24 1943-12-24 Improvements in or relating to electrical combining circuit arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2167843A GB574978A (en) 1943-12-24 1943-12-24 Improvements in or relating to electrical combining circuit arrangements

Publications (1)

Publication Number Publication Date
GB574978A true GB574978A (en) 1946-01-29

Family

ID=10166987

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2167843A Expired GB574978A (en) 1943-12-24 1943-12-24 Improvements in or relating to electrical combining circuit arrangements

Country Status (2)

Country Link
GB (1) GB574978A (en)
NL (1) NL68483C (en)

Also Published As

Publication number Publication date
NL68483C (en)

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