JPS5419306A - Switch circuit for push button dial telephone set - Google Patents

Switch circuit for push button dial telephone set

Info

Publication number
JPS5419306A
JPS5419306A JP8450777A JP8450777A JPS5419306A JP S5419306 A JPS5419306 A JP S5419306A JP 8450777 A JP8450777 A JP 8450777A JP 8450777 A JP8450777 A JP 8450777A JP S5419306 A JPS5419306 A JP S5419306A
Authority
JP
Japan
Prior art keywords
push button
switch circuit
telephone set
dial telephone
button dial
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
JP8450777A
Other languages
English (en)
Japanese (ja)
Other versions
JPS569815B2 (de
Inventor
Makoto Yoshitoshi
Koichi Matsumoto
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8450777A priority Critical patent/JPS5419306A/ja
Publication of JPS5419306A publication Critical patent/JPS5419306A/ja
Publication of JPS569815B2 publication Critical patent/JPS569815B2/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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Input From Keyboards Or The Like (AREA)
JP8450777A 1977-07-14 1977-07-14 Switch circuit for push button dial telephone set Granted JPS5419306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8450777A JPS5419306A (en) 1977-07-14 1977-07-14 Switch circuit for push button dial telephone set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8450777A JPS5419306A (en) 1977-07-14 1977-07-14 Switch circuit for push button dial telephone set

Publications (2)

Publication Number Publication Date
JPS5419306A true JPS5419306A (en) 1979-02-14
JPS569815B2 JPS569815B2 (de) 1981-03-04

Family

ID=13832551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8450777A Granted JPS5419306A (en) 1977-07-14 1977-07-14 Switch circuit for push button dial telephone set

Country Status (1)

Country Link
JP (1) JPS5419306A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197636A (en) * 1981-05-29 1982-12-03 Fujitsu Ltd Chattering preventing circuit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7431696B2 (ja) 2020-08-04 2024-02-15 信越化学工業株式会社 ポジ型感光性樹脂組成物、ポジ型感光性ドライフィルム、ポジ型感光性ドライフィルムの製造方法、パターン形成方法、硬化被膜形成方法、層間絶縁膜、表面保護膜、及び電子部品
JP7335217B2 (ja) 2020-09-24 2023-08-29 信越化学工業株式会社 感光性樹脂組成物、パターン形成方法、硬化被膜形成方法、層間絶縁膜、表面保護膜、及び電子部品
JP7495897B2 (ja) 2021-03-23 2024-06-05 信越化学工業株式会社 ポジ型感光性樹脂組成物、ポジ型感光性ドライフィルム、ポジ型感光性ドライフィルムの製造方法、パターン形成方法、硬化被膜形成方法、層間絶縁膜、表面保護膜、及び電子部品

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197636A (en) * 1981-05-29 1982-12-03 Fujitsu Ltd Chattering preventing circuit

Also Published As

Publication number Publication date
JPS569815B2 (de) 1981-03-04

Similar Documents

Publication Publication Date Title
JPS52151058A (en) Push button construction of electronic watches
ES470399A1 (es) Interruptor electrico
JPS5419306A (en) Switch circuit for push button dial telephone set
GB1479026A (en) Push button switch
JPS53126252A (en) Output circuit
JPS53132968A (en) Switch circuit
GB901262A (en) Electrical switch contact arrangement
JPS5420652A (en) Analog switch circuit
GB721690A (en) Improvements relating to electric changeover switches
JPS51129266A (en) Electronic watch
GB734670A (en) Contact assembly for an electromagnetic relay
JPS5781753A (en) Improved double-telephone device
JPS52125744A (en) Over current limiting circuit
JPS5249060A (en) Switch of electronic watch
JPS51135356A (en) C-mos switch circuit
JPS5478004A (en) Switch circuit of push-button dial telephone set
JPS51121232A (en) An inverter-circuit
JPS52147908A (en) Switch
JPS51130888A (en) Connector with a switch
JPS53135248A (en) Semiconductor switch circuit
GB921231A (en) Switch-operating push-buttons
JPS51150367A (en) Digital electronic watch
JPS5227204A (en) Electric striction-type coordinate selector
ES473703A1 (es) Perfeccionamientos en pulsadores para establecer o interrum-pir una conexion electrica
JPS53911A (en) Speech current disconnection circuit