JPS528707A - Telephone citcuit - Google Patents

Telephone citcuit

Info

Publication number
JPS528707A
JPS528707A JP8428075A JP8428075A JPS528707A JP S528707 A JPS528707 A JP S528707A JP 8428075 A JP8428075 A JP 8428075A JP 8428075 A JP8428075 A JP 8428075A JP S528707 A JPS528707 A JP S528707A
Authority
JP
Japan
Prior art keywords
citcuit
telephone
receiving level
economically
installing
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
JP8428075A
Other languages
Japanese (ja)
Other versions
JPS5420364B2 (en
Inventor
Yasuhiro Ono
Takayuki Yamazaki
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP8428075A priority Critical patent/JPS528707A/en
Publication of JPS528707A publication Critical patent/JPS528707A/en
Publication of JPS5420364B2 publication Critical patent/JPS5420364B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:In order to make the control of the receiving level possible automatically and economically, through installing the receiving level control circuit which consists of non-linear element.
JP8428075A 1975-07-09 1975-07-09 Telephone citcuit Granted JPS528707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8428075A JPS528707A (en) 1975-07-09 1975-07-09 Telephone citcuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8428075A JPS528707A (en) 1975-07-09 1975-07-09 Telephone citcuit

Publications (2)

Publication Number Publication Date
JPS528707A true JPS528707A (en) 1977-01-22
JPS5420364B2 JPS5420364B2 (en) 1979-07-23

Family

ID=13826032

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8428075A Granted JPS528707A (en) 1975-07-09 1975-07-09 Telephone citcuit

Country Status (1)

Country Link
JP (1) JPS528707A (en)

Also Published As

Publication number Publication date
JPS5420364B2 (en) 1979-07-23

Similar Documents

Publication Publication Date Title
JPS5235481A (en) Discharge light starting system
IT7830071A0 (en) 2-ADAMANTIL HYDRAZINES AND COMPOSITIONS THAT CONTAIN THEM.
JPS528707A (en) Telephone citcuit
JPS52127359A (en) Electronic timepiece capable of giving multiplekind of indicatios
JPS528706A (en) Telephone circuit
JPS52127114A (en) Muting circuit
JPS5296851A (en) Gain control unit
JPS51126703A (en) Information transfering system
JPS5220711A (en) Electronic exchange control system
JPS5331908A (en) Preset dial unit
JPS51131256A (en) Diode matrix circuit
JPS5210004A (en) Switching circuit by voice signal
JPS5274201A (en) Display control circuit for key telephone system
JPS5238785A (en) Electronic flaalsher
JPS51130104A (en) Telephone set
JPS5423454A (en) Aplifier and oscillator using that oscillator
JPS51120253A (en) Digital type electronic clock
JPS5252669A (en) Substrate for watches
JPS51147163A (en) Electric level pulse width converter
JPS51128247A (en) Antenna
JPS51138147A (en) Agc circuit
JPS52102A (en) Electronic telecontrol device
JPS5223927A (en) Performance equipment
JPS5325338A (en) Aural amplifier
JPS51134510A (en) Program transmission equipment