JPS57121331A - Transmission device - Google Patents

Transmission device

Info

Publication number
JPS57121331A
JPS57121331A JP851381A JP851381A JPS57121331A JP S57121331 A JPS57121331 A JP S57121331A JP 851381 A JP851381 A JP 851381A JP 851381 A JP851381 A JP 851381A JP S57121331 A JPS57121331 A JP S57121331A
Authority
JP
Japan
Prior art keywords
supply line
power supply
supplied
voltage
signal
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.)
Granted
Application number
JP851381A
Other languages
Japanese (ja)
Other versions
JPS6220742B2 (en
Inventor
Tadashi Azegami
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.)
Yokogawa Electric Corp
Original Assignee
Hokushin Electric Works Ltd
Yokogawa Hokushin Electric Corp
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 Hokushin Electric Works Ltd, Yokogawa Hokushin Electric Corp filed Critical Hokushin Electric Works Ltd
Priority to JP851381A priority Critical patent/JPS57121331A/en
Publication of JPS57121331A publication Critical patent/JPS57121331A/en
Publication of JPS6220742B2 publication Critical patent/JPS6220742B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/002—Transmission systems not characterised by the medium used for transmission characterised by the use of a carrier modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To permit the receiving part to have a narrow dynamic range, by detecting the magnitude of a supplied voltage, which is received from a power supply line, by a signal transmitting part and by controlling the intensity of a carrier signal to be transmitted in accordance with the magnitude of this detection voltage. CONSTITUTION:Each signal transmitting part of a transmission device where plural signal transmitting parts are connected to a common power supply line and a power source device is connected near a common receiving part of the power supply line takes in the signal from an oscillator from a terminal 21 of a process information taking-in part 15 and converts this signal to pulses of a narrow width by a monostable multivibrator 23. The supplied power from the power supply line is supplied to a receiving part 18 through terminals 24 and 25 are passes through a constant voltage element 27 to become an operating power for taking-in part 15 and a modulating part 17. The voltage from the part 17 and the voltage from the terminal 24 are supplied to an inversion amplifier 33, and the output of the amplifier 33 is used as an operating power for a carrier generator 16. The output of the generator 16 is modulated by the modulating part 17 and is transmitted to the power supply line.
JP851381A 1981-01-21 1981-01-21 Transmission device Granted JPS57121331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP851381A JPS57121331A (en) 1981-01-21 1981-01-21 Transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP851381A JPS57121331A (en) 1981-01-21 1981-01-21 Transmission device

Publications (2)

Publication Number Publication Date
JPS57121331A true JPS57121331A (en) 1982-07-28
JPS6220742B2 JPS6220742B2 (en) 1987-05-08

Family

ID=11695205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP851381A Granted JPS57121331A (en) 1981-01-21 1981-01-21 Transmission device

Country Status (1)

Country Link
JP (1) JPS57121331A (en)

Also Published As

Publication number Publication date
JPS6220742B2 (en) 1987-05-08

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