JPS5556709A - Amplification system - Google Patents

Amplification system

Info

Publication number
JPS5556709A
JPS5556709A JP13001278A JP13001278A JPS5556709A JP S5556709 A JPS5556709 A JP S5556709A JP 13001278 A JP13001278 A JP 13001278A JP 13001278 A JP13001278 A JP 13001278A JP S5556709 A JPS5556709 A JP S5556709A
Authority
JP
Japan
Prior art keywords
terminal
amplifier
signal
filter
filters
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
JP13001278A
Other languages
Japanese (ja)
Inventor
Makoto Shibata
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
Application filed by Individual filed Critical Individual
Priority to JP13001278A priority Critical patent/JPS5556709A/en
Publication of JPS5556709A publication Critical patent/JPS5556709A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/62—Two-way amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To prevent a bistable multivibrator from causing swinging through amplification by frequencies. CONSTITUTION:Terminals 1 and 2 are connected to telephone main wires, filters 3 and 11, 13 and 24, and 25 and 35 are equal in kind respectively, and signals having passed through respective filters are amplified by passing through corresponding amolifiers 10 and 9, 22 and 21, and 33 and 34. Then, when a rectified signal from amplifier 14 is greater than that from amplifier 15, photocoupler 12 operates to send a signal from terminal 1 to terminal 2 by way of filter 13, amplifier 22 and filter 24, but a signal from terminal 2 is not sent to terminal through the operations of diode switches 7, 18 and 32.
JP13001278A 1978-10-24 1978-10-24 Amplification system Pending JPS5556709A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13001278A JPS5556709A (en) 1978-10-24 1978-10-24 Amplification system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13001278A JPS5556709A (en) 1978-10-24 1978-10-24 Amplification system

Publications (1)

Publication Number Publication Date
JPS5556709A true JPS5556709A (en) 1980-04-25

Family

ID=15023961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13001278A Pending JPS5556709A (en) 1978-10-24 1978-10-24 Amplification system

Country Status (1)

Country Link
JP (1) JPS5556709A (en)

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