JPS57178436A - Individual selector - Google Patents

Individual selector

Info

Publication number
JPS57178436A
JPS57178436A JP6382381A JP6382381A JPS57178436A JP S57178436 A JPS57178436 A JP S57178436A JP 6382381 A JP6382381 A JP 6382381A JP 6382381 A JP6382381 A JP 6382381A JP S57178436 A JPS57178436 A JP S57178436A
Authority
JP
Japan
Prior art keywords
resistance
terminal equipments
capacitor
constitution
display device
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.)
Pending
Application number
JP6382381A
Other languages
Japanese (ja)
Inventor
Taiichiro Noguchi
Naohiko Senda
Satokazu Yamazaki
Motoyoshi Morifuji
Osamu Shiozu
Shoichi Kaneko
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.)
Yagi Antenna Co Ltd
Original Assignee
Yagi Antenna 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 Yagi Antenna Co Ltd filed Critical Yagi Antenna Co Ltd
Priority to JP6382381A priority Critical patent/JPS57178436A/en
Publication of JPS57178436A publication Critical patent/JPS57178436A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

PURPOSE:To improve producibility and to facilitate the installation of terminal equipments by simplifying the constitution of the terminal equipment by eliminating the need for its power source by increasing the DC resistance of the center conductor of a coaxial cable for TV community reception according to the number of connections of the terminal equipments. CONSTITUTION:Parallel circuits 21-2n each composed of a resistance 3 and a capacitor 4 are connected in series to the center conductor 1a of a coaxial cable 1, and terminal equipments 101-10n each consists of a parallel circuit 2i, a branching circuit 5i, a choke coil 8i, and an operation switch 9i. A monitoring part 14 is composed of a series circuit of a DC power source 15, an internal resistance 16, and a voltage readout display device 17, and a connection point X between the resistance 16 and display device 17 is connected to the input side of the cable 1 through the choke coil 18. A high-frequency signal has a by-pass through the capacitor 4 and only the value of the resistance increases with the number of terminal equipments 10.
JP6382381A 1981-04-27 1981-04-27 Individual selector Pending JPS57178436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6382381A JPS57178436A (en) 1981-04-27 1981-04-27 Individual selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6382381A JPS57178436A (en) 1981-04-27 1981-04-27 Individual selector

Publications (1)

Publication Number Publication Date
JPS57178436A true JPS57178436A (en) 1982-11-02

Family

ID=13240464

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6382381A Pending JPS57178436A (en) 1981-04-27 1981-04-27 Individual selector

Country Status (1)

Country Link
JP (1) JPS57178436A (en)

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