JPS57201344A - Controlling device for transmitted output - Google Patents

Controlling device for transmitted output

Info

Publication number
JPS57201344A
JPS57201344A JP8728781A JP8728781A JPS57201344A JP S57201344 A JPS57201344 A JP S57201344A JP 8728781 A JP8728781 A JP 8728781A JP 8728781 A JP8728781 A JP 8728781A JP S57201344 A JPS57201344 A JP S57201344A
Authority
JP
Japan
Prior art keywords
electric power
wave electric
reflected wave
voltage
tr9a
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
JP8728781A
Other languages
Japanese (ja)
Inventor
Akira Ando
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8728781A priority Critical patent/JPS57201344A/en
Publication of JPS57201344A publication Critical patent/JPS57201344A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B2001/0408—Circuits with power amplifiers
    • H04B2001/0416—Circuits with power amplifiers having gain or transmission power control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

PURPOSE:To stabilize a transmitted output by stopping the control operation until the reflected wave electric power reaches to a prescribed level. CONSTITUTION:Emitters of transistors (TRs) 9a, 9b constituting a differential amplifier are connected to an emitter resistance 10 in common. Since the base voltage Ea of TR9a rises accompanied with the increment of travelling wave electric power, the collector potential of the TR9a rises and a TR1 is controlled in the cutoff direction. Consequently, power voltage to be applied to a transmitter drops and transmission electric power is supressed. On the other hand, when reflected wave electric power increases and reaches the Zener voltage Ez of a Zener diode 13, the diode 13 is connected and a TR14 is also connected. Accompanied with the connection, the TR9b is cut off and the TR1 is interrupted. Thus, the transmitter can be protected from damage due to the reflected wave electric power.
JP8728781A 1981-06-03 1981-06-03 Controlling device for transmitted output Pending JPS57201344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8728781A JPS57201344A (en) 1981-06-03 1981-06-03 Controlling device for transmitted output

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8728781A JPS57201344A (en) 1981-06-03 1981-06-03 Controlling device for transmitted output

Publications (1)

Publication Number Publication Date
JPS57201344A true JPS57201344A (en) 1982-12-09

Family

ID=13910575

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8728781A Pending JPS57201344A (en) 1981-06-03 1981-06-03 Controlling device for transmitted output

Country Status (1)

Country Link
JP (1) JPS57201344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224539U (en) * 1985-07-29 1987-02-14
CN106154107A (en) * 2015-04-18 2016-11-23 山东安亚电子信息有限公司 Distribution line failure travelling wave ranging high reliability method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6224539U (en) * 1985-07-29 1987-02-14
CN106154107A (en) * 2015-04-18 2016-11-23 山东安亚电子信息有限公司 Distribution line failure travelling wave ranging high reliability method and device

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