KR880022851U - 전화기의 보호회로 - Google Patents

전화기의 보호회로

Info

Publication number
KR880022851U
KR880022851U KR2019870007085U KR870007085U KR880022851U KR 880022851 U KR880022851 U KR 880022851U KR 2019870007085 U KR2019870007085 U KR 2019870007085U KR 870007085 U KR870007085 U KR 870007085U KR 880022851 U KR880022851 U KR 880022851U
Authority
KR
South Korea
Prior art keywords
protection circuit
phone protection
phone
circuit
protection
Prior art date
Application number
KR2019870007085U
Other languages
English (en)
Other versions
KR910006038Y1 (ko
Inventor
유재석
Original Assignee
대우전자 주식회사
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 대우전자 주식회사 filed Critical 대우전자 주식회사
Priority to KR2019870007085U priority Critical patent/KR910006038Y1/ko
Publication of KR880022851U publication Critical patent/KR880022851U/ko
Application granted granted Critical
Publication of KR910006038Y1 publication Critical patent/KR910006038Y1/ko

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
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/04—Transistors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/80—Electronic components, circuits, software, systems or apparatus used in telephone systems line protection circuits such as current or overvoltage protection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Protection Of Static Devices (AREA)
  • Emergency Protection Circuit Devices (AREA)
KR2019870007085U 1987-05-11 1987-05-11 전화기의 보호회로 KR910006038Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870007085U KR910006038Y1 (ko) 1987-05-11 1987-05-11 전화기의 보호회로

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870007085U KR910006038Y1 (ko) 1987-05-11 1987-05-11 전화기의 보호회로

Publications (2)

Publication Number Publication Date
KR880022851U true KR880022851U (ko) 1988-12-27
KR910006038Y1 KR910006038Y1 (ko) 1991-08-16

Family

ID=70465735

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870007085U KR910006038Y1 (ko) 1987-05-11 1987-05-11 전화기의 보호회로

Country Status (1)

Country Link
KR (1) KR910006038Y1 (ko)

Also Published As

Publication number Publication date
KR910006038Y1 (ko) 1991-08-16

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 19990731

Year of fee payment: 9

LAPS Lapse due to unpaid annual fee