KR890011917U - Overvoltage protection circuit of telephone circuit in telephone - Google Patents

Overvoltage protection circuit of telephone circuit in telephone

Info

Publication number
KR890011917U
KR890011917U KR2019870021031U KR870021031U KR890011917U KR 890011917 U KR890011917 U KR 890011917U KR 2019870021031 U KR2019870021031 U KR 2019870021031U KR 870021031 U KR870021031 U KR 870021031U KR 890011917 U KR890011917 U KR 890011917U
Authority
KR
South Korea
Prior art keywords
telephone
circuit
overvoltage protection
protection circuit
overvoltage
Prior art date
Application number
KR2019870021031U
Other languages
Korean (ko)
Other versions
KR900007843Y1 (en
Inventor
허주원
Original Assignee
삼성전자 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 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to KR2019870021031U priority Critical patent/KR900007843Y1/en
Publication of KR890011917U publication Critical patent/KR890011917U/en
Application granted granted Critical
Publication of KR900007843Y1 publication Critical patent/KR900007843Y1/en

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
    • H04M2201/80—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)
  • Emergency Protection Circuit Devices (AREA)
  • Interface Circuits In Exchanges (AREA)
KR2019870021031U 1987-11-30 1987-11-30 Circuit to prevent over voltage in communicatious KR900007843Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870021031U KR900007843Y1 (en) 1987-11-30 1987-11-30 Circuit to prevent over voltage in communicatious

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870021031U KR900007843Y1 (en) 1987-11-30 1987-11-30 Circuit to prevent over voltage in communicatious

Publications (2)

Publication Number Publication Date
KR890011917U true KR890011917U (en) 1989-07-15
KR900007843Y1 KR900007843Y1 (en) 1990-08-24

Family

ID=19269952

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870021031U KR900007843Y1 (en) 1987-11-30 1987-11-30 Circuit to prevent over voltage in communicatious

Country Status (1)

Country Link
KR (1) KR900007843Y1 (en)

Also Published As

Publication number Publication date
KR900007843Y1 (en) 1990-08-24

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Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20020723

Year of fee payment: 13

EXPY Expiration of term