JPS5838058A - 電話機のための給電回路 - Google Patents

電話機のための給電回路

Info

Publication number
JPS5838058A
JPS5838058A JP56135213A JP13521381A JPS5838058A JP S5838058 A JPS5838058 A JP S5838058A JP 56135213 A JP56135213 A JP 56135213A JP 13521381 A JP13521381 A JP 13521381A JP S5838058 A JPS5838058 A JP S5838058A
Authority
JP
Japan
Prior art keywords
circuit
voltage
signal
bell
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.)
Granted
Application number
JP56135213A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0253987B2 (en:Method
Inventor
Takahiro Yokota
横田　恭弘
Minoru Sakata
稔 坂田
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 JP56135213A priority Critical patent/JPS5838058A/ja
Publication of JPS5838058A publication Critical patent/JPS5838058A/ja
Publication of JPH0253987B2 publication Critical patent/JPH0253987B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
JP56135213A 1981-08-28 1981-08-28 電話機のための給電回路 Granted JPS5838058A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56135213A JPS5838058A (ja) 1981-08-28 1981-08-28 電話機のための給電回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56135213A JPS5838058A (ja) 1981-08-28 1981-08-28 電話機のための給電回路

Publications (2)

Publication Number Publication Date
JPS5838058A true JPS5838058A (ja) 1983-03-05
JPH0253987B2 JPH0253987B2 (en:Method) 1990-11-20

Family

ID=15146478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56135213A Granted JPS5838058A (ja) 1981-08-28 1981-08-28 電話機のための給電回路

Country Status (1)

Country Link
JP (1) JPS5838058A (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019330A (ja) * 1983-07-13 1985-01-31 Nec Corp 無線電話装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5570162A (en) * 1978-11-21 1980-05-27 Fujitsu Ltd Call signal generation system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5570162A (en) * 1978-11-21 1980-05-27 Fujitsu Ltd Call signal generation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6019330A (ja) * 1983-07-13 1985-01-31 Nec Corp 無線電話装置

Also Published As

Publication number Publication date
JPH0253987B2 (en:Method) 1990-11-20

Similar Documents

Publication Publication Date Title
US4803719A (en) Method for powering telephone apparatus and telephone apparatus powered directly from the telephone line without external power
US4071884A (en) Integrated circuit high voltage DC converter
CA1205131A (en) Switching regulator
US4532457A (en) Television receiver standby circuit
JP3037955B2 (ja) テレビジョン装置
JPH11332229A (ja) スイッチング電源
US4367376A (en) Electronic telephone ringer including anti-bell tap provisions
JP2006054961A (ja) 同期整流スイッチング電源回路
GB2175108A (en) Regulating power supply for video display apparatus
GB2202114A (en) Standby power supply regulation for television apparatus
JPH02222374A (ja) 高電圧発生回路
JP3105718B2 (ja) 個別選択呼出受信機
JPS5838058A (ja) 電話機のための給電回路
US4726060A (en) Line circuit for driving a ringer and a service indicating lamp in a telephone set
US5615092A (en) Switching power supply regulator with an inductive pulse circuit
JP3037050B2 (ja) 電源装置
JPS596553B2 (ja) テレビジヨン受像機の直流電圧供給装置
JPH09181799A (ja) 携帯電話機
US4307466A (en) Audio system for drive-in theaters
JPH10302958A (ja) 高周波加熱装置
JPS60178760A (ja) 電話機用ベルの駆動用電源回路
JPH04340366A (ja) Ｄｃ−ｄｃコンバータの制御ユニット
KR100559708B1 (ko) 메시지웨이팅기능을 갖는 가입자보드
JP2005303496A (ja) 電源生成回路および通信装置
JPS6142906B2 (en:Method)