JPS6423657A - Dial circuit power source supplying system - Google Patents

Dial circuit power source supplying system

Info

Publication number
JPS6423657A
JPS6423657A JP17954687A JP17954687A JPS6423657A JP S6423657 A JPS6423657 A JP S6423657A JP 17954687 A JP17954687 A JP 17954687A JP 17954687 A JP17954687 A JP 17954687A JP S6423657 A JPS6423657 A JP S6423657A
Authority
JP
Japan
Prior art keywords
feeding
primary battery
dial circuit
state
hook
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
JP17954687A
Other languages
Japanese (ja)
Inventor
Masahiro Osajima
Osamu Hibino
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17954687A priority Critical patent/JPS6423657A/en
Publication of JPS6423657A publication Critical patent/JPS6423657A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To use a primary battery for a long service life by interrupting a feeding from the primary battery to a numerical memory when the feeding of a direct current from an exchanger to be connected by a telephone line is detected. CONSTITUTION:A switching means 200 detects the feeding of a direct current from an accommodated exchanger and interrupts the feeding from a primary battery 116 to a dial circuit 108 when a telephone set is in the state of an off-hook and a hook switch 102 is in an action state. On the other hand, when the telephone set is in the on-hook state and the hook switch 102 is in a recovered state, the stoppage of the direct current feeding from the exchanger is detected and the feeding from the primary battery 116 to the dial circuit 108 can be executed. Thus, the feeding from the primary battery 116 to the dial circuit 108 is limited to a case that the telephone set is in the on-hook state regardless of the distance of a telephone line, since the chance of a feeding is decreased and a discharging current is reduced, the primary battery 116 can stand for a long time use.
JP17954687A 1987-07-17 1987-07-17 Dial circuit power source supplying system Pending JPS6423657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17954687A JPS6423657A (en) 1987-07-17 1987-07-17 Dial circuit power source supplying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17954687A JPS6423657A (en) 1987-07-17 1987-07-17 Dial circuit power source supplying system

Publications (1)

Publication Number Publication Date
JPS6423657A true JPS6423657A (en) 1989-01-26

Family

ID=16067637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17954687A Pending JPS6423657A (en) 1987-07-17 1987-07-17 Dial circuit power source supplying system

Country Status (1)

Country Link
JP (1) JPS6423657A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0477094U (en) * 1990-11-19 1992-07-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0477094U (en) * 1990-11-19 1992-07-06

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