JPS5720055A - Chocking circuit - Google Patents

Chocking circuit

Info

Publication number
JPS5720055A
JPS5720055A JP9420580A JP9420580A JPS5720055A JP S5720055 A JPS5720055 A JP S5720055A JP 9420580 A JP9420580 A JP 9420580A JP 9420580 A JP9420580 A JP 9420580A JP S5720055 A JPS5720055 A JP S5720055A
Authority
JP
Japan
Prior art keywords
terminal
resistance
transistor
communication line
line
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
JP9420580A
Other languages
Japanese (ja)
Inventor
Hitoshi Ito
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 JP9420580A priority Critical patent/JPS5720055A/en
Publication of JPS5720055A publication Critical patent/JPS5720055A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To reduce voltage variations of a communication line by clamping a signal at an operation point where the impedance of a collector does not decrease, by using the transistor as a high impedance element substituting a choke coil, and by obtaining a constant voltage by the variable DC resistance of the transistor. CONSTITUTION:A transistor TR is provided connecting with one communication line L1 at its collector and with one terminal of a power source at its emitter, and a Zener diode 7 is connected to the base of the TR at one terminal and to the line L1 at the other terminal. The other terminal of the diode 7 is connected to one terminal of a resistance 6A for preventing an AC short circuit, the other terminal of the resistance 6A is connected to a communication line L2, and a capacitor C1 is interposed between the resistance 6A and line L2. Consequently, the voltage drop of a choking circuit due to an increase in current is reduced remarkably with less voltage variations at a common signal terminal 1.
JP9420580A 1980-07-10 1980-07-10 Chocking circuit Pending JPS5720055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9420580A JPS5720055A (en) 1980-07-10 1980-07-10 Chocking circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9420580A JPS5720055A (en) 1980-07-10 1980-07-10 Chocking circuit

Publications (1)

Publication Number Publication Date
JPS5720055A true JPS5720055A (en) 1982-02-02

Family

ID=14103796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9420580A Pending JPS5720055A (en) 1980-07-10 1980-07-10 Chocking circuit

Country Status (1)

Country Link
JP (1) JPS5720055A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961638A (en) * 1972-10-19 1974-06-14

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4961638A (en) * 1972-10-19 1974-06-14

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