JPS54157020A - Carrier transmitter - Google Patents

Carrier transmitter

Info

Publication number
JPS54157020A
JPS54157020A JP6598278A JP6598278A JPS54157020A JP S54157020 A JPS54157020 A JP S54157020A JP 6598278 A JP6598278 A JP 6598278A JP 6598278 A JP6598278 A JP 6598278A JP S54157020 A JPS54157020 A JP S54157020A
Authority
JP
Japan
Prior art keywords
transmission
coil
carrier
impedance
transformer
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
JP6598278A
Other languages
Japanese (ja)
Inventor
Toshio Abiko
Yoshiharu Suzuki
Kensaburo Tanemura
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP6598278A priority Critical patent/JPS54157020A/en
Publication of JPS54157020A publication Critical patent/JPS54157020A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Landscapes

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

Abstract

PURPOSE:To perform a high-efficiency transmission with reducing loss by providing a switching means, which sets the impedance of a coupling circuit superposing the carrier output onto the transmission line such as an interior power line to a low value at a carrier transmission time and to a high value at a carrier non-transmission time, and setting the impedance of the transmission line at the view from the transmission side to a high value. CONSTITUTION:A series resonance circuit, where capacitor 4 is connected in series to secondary-side output coil 2 of coupling transformer T, in coupling circuit 1 of carrier transmitter 3 is connected between transmission lines l1 and l2 through contact r of the relay of oscillator 3a, and transmitting coil 5 is connected to the primary side of transformer T. Further, coil 5 is connected in series to driving transistor Tr1, and receiving coil 8 is connected to transformer T, and coil 8 is connected to receiving signal amplifying Tr2. Then, contact r of the relay is operated by the operation of transmission switch 6 connected to oscillator 3a, thus setting the impedance of transmission lines l1 and l2 to a low value at a transmission time and to a high value at a non-transmission time.
JP6598278A 1978-05-31 1978-05-31 Carrier transmitter Pending JPS54157020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6598278A JPS54157020A (en) 1978-05-31 1978-05-31 Carrier transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6598278A JPS54157020A (en) 1978-05-31 1978-05-31 Carrier transmitter

Publications (1)

Publication Number Publication Date
JPS54157020A true JPS54157020A (en) 1979-12-11

Family

ID=13302711

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6598278A Pending JPS54157020A (en) 1978-05-31 1978-05-31 Carrier transmitter

Country Status (1)

Country Link
JP (1) JPS54157020A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849544U (en) * 1981-09-30 1983-04-04 大崎電気工業株式会社 current carrying transmitter
JPS5849545U (en) * 1981-09-30 1983-04-04 大崎電気工業株式会社 current carrying transmitter
JPS59127354U (en) * 1983-02-15 1984-08-27 松下電工株式会社 Transmitter/receiver device for power line carrier system
JPS6075961A (en) * 1983-10-03 1985-04-30 Tokyo Tatsuno Co Ltd Transmitter of oil supply information
WO1986002794A1 (en) * 1984-10-31 1986-05-09 Brown, Boveri & Cie Aktiengesellschaft Process for reducing the loading of a transmission circuit by the receiving circuit of several transmission/receiving sets, and a circuit arrangement for realisation of the process
WO2006070481A1 (en) * 2004-12-27 2006-07-06 Alps Electric Co., Ltd. Specific frequency component attenuation device, and power line carrier communication system
JP2009005361A (en) * 2007-06-25 2009-01-08 Schneider Electric Industries Sas Power line communication for control center

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5849544U (en) * 1981-09-30 1983-04-04 大崎電気工業株式会社 current carrying transmitter
JPS5849545U (en) * 1981-09-30 1983-04-04 大崎電気工業株式会社 current carrying transmitter
JPS6318196Y2 (en) * 1981-09-30 1988-05-23
JPS6318197Y2 (en) * 1981-09-30 1988-05-23
JPS59127354U (en) * 1983-02-15 1984-08-27 松下電工株式会社 Transmitter/receiver device for power line carrier system
JPS6349001Y2 (en) * 1983-02-15 1988-12-16
JPS6075961A (en) * 1983-10-03 1985-04-30 Tokyo Tatsuno Co Ltd Transmitter of oil supply information
JPH0154745B2 (en) * 1983-10-03 1989-11-21 Tokyo Tatsuno Kk
WO1986002794A1 (en) * 1984-10-31 1986-05-09 Brown, Boveri & Cie Aktiengesellschaft Process for reducing the loading of a transmission circuit by the receiving circuit of several transmission/receiving sets, and a circuit arrangement for realisation of the process
WO2006070481A1 (en) * 2004-12-27 2006-07-06 Alps Electric Co., Ltd. Specific frequency component attenuation device, and power line carrier communication system
JP2009005361A (en) * 2007-06-25 2009-01-08 Schneider Electric Industries Sas Power line communication for control center

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