JPS6480155A - Feeding circuit for telephone set control circuit - Google Patents

Feeding circuit for telephone set control circuit

Info

Publication number
JPS6480155A
JPS6480155A JP23680187A JP23680187A JPS6480155A JP S6480155 A JPS6480155 A JP S6480155A JP 23680187 A JP23680187 A JP 23680187A JP 23680187 A JP23680187 A JP 23680187A JP S6480155 A JPS6480155 A JP S6480155A
Authority
JP
Japan
Prior art keywords
control circuit
circuit
feeding
charged
telephone set
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
JP23680187A
Other languages
Japanese (ja)
Inventor
Tadashi Murayama
Masanori Tanaka
Shigemitsu Karasutani
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP23680187A priority Critical patent/JPS6480155A/en
Publication of JPS6480155A publication Critical patent/JPS6480155A/en
Pending legal-status Critical Current

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  • Devices For Supply Of Signal Current (AREA)

Abstract

PURPOSE:To quicken the operation of a control circuit at the time of connecting a line or restarting after lockout by separating a charging circuit for a feeding circuit to the control circuit at start and a feeding circuit for backup of the control circuit. CONSTITUTION:The control circuit 1 is fed by a feeding resistor R1 and a diode D1 in the standby state in the connection to a line at first. In this case, a backup capacitor C is not charged and the control circuit 1 is made operative in a short time. Since the power supply circuit 4 has a current supply capability of 1mA or the like, the backup capacitor C is charged in a comparatively short time. Since the electric charge in the backup capacitor charged in such a way is supplied to the control circuit 1 via a diode D3, the power supply of the control circuit 1 is backed up.
JP23680187A 1987-09-21 1987-09-21 Feeding circuit for telephone set control circuit Pending JPS6480155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23680187A JPS6480155A (en) 1987-09-21 1987-09-21 Feeding circuit for telephone set control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23680187A JPS6480155A (en) 1987-09-21 1987-09-21 Feeding circuit for telephone set control circuit

Publications (1)

Publication Number Publication Date
JPS6480155A true JPS6480155A (en) 1989-03-27

Family

ID=17005989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23680187A Pending JPS6480155A (en) 1987-09-21 1987-09-21 Feeding circuit for telephone set control circuit

Country Status (1)

Country Link
JP (1) JPS6480155A (en)

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