SE450070B - Trepolig strommatningskrets for telefonapparat - Google Patents

Trepolig strommatningskrets for telefonapparat

Info

Publication number
SE450070B
SE450070B SE8001541A SE8001541A SE450070B SE 450070 B SE450070 B SE 450070B SE 8001541 A SE8001541 A SE 8001541A SE 8001541 A SE8001541 A SE 8001541A SE 450070 B SE450070 B SE 450070B
Authority
SE
Sweden
Prior art keywords
circuit
voltage
pole
transistor
constant
Prior art date
Application number
SE8001541A
Other languages
English (en)
Swedish (sv)
Other versions
SE8001541L (sv
Inventor
T Naganawa
M Yoshitoshi
K Kato
Original Assignee
Nippon Telegraph & Telephone
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 & Telephone filed Critical Nippon Telegraph & Telephone
Publication of SE8001541L publication Critical patent/SE8001541L/
Publication of SE450070B publication Critical patent/SE450070B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Protection Of Static Devices (AREA)
SE8001541A 1979-07-03 1980-02-28 Trepolig strommatningskrets for telefonapparat SE450070B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083438A JPS596549B2 (ja) 1979-07-03 1979-07-03 電話機用３端子電源回路

Publications (2)

Publication Number Publication Date
SE8001541L SE8001541L (sv) 1981-01-04
SE450070B true SE450070B (sv) 1987-06-01

Family

ID=13802427

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8001541A SE450070B (sv) 1979-07-03 1980-02-28 Trepolig strommatningskrets for telefonapparat

Country Status (8)

Country Link
US (1) US4319094A (fr)
JP (1) JPS596549B2 (fr)
CA (1) CA1132735A (fr)
DE (1) DE3008259C2 (fr)
DK (1) DK155068C (fr)
FR (1) FR2460576A1 (fr)
GB (1) GB2052213B (fr)
SE (1) SE450070B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500691A1 (fr) * 1981-02-23 1982-08-27 Pays Gerard Cellule d'alimentation electrique a redressement et regulation, notamment pour sonneries electroniques
DE3238416A1 (de) * 1982-10-16 1984-04-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zum speisen einer eine konstante betriebsspannung liefernden stromversorgungseinrichtung
FR2549667B1 (fr) * 1983-07-22 1985-10-04 Thomson Csf Circuit d'alimentation regulee notamment pour poste telephonique
DE3334988A1 (de) * 1983-09-24 1985-04-18 Elmeg Elektro-Mechanik Gmbh, 3150 Peine Schaltungsanordnung zur speisung von fernsprecheinrichtungen aus der leitung
US5125077A (en) * 1983-11-02 1992-06-23 Microsoft Corporation Method of formatting data from a mouse
JPS6328995U (fr) * 1986-08-11 1988-02-25
SE455749B (sv) * 1986-12-09 1988-08-01 Ericsson Telefon Ab L M Anordning vid en hogtalareforsedd telefonapparat for att effektforsorja en till hogtalaren ansluten hogtalareforsterkare
DE3826765A1 (de) * 1988-08-04 1990-02-08 Deutsche Telephonwerk Kabel Schaltungsanordnung zur speisung elektronischer komponenten in kommunikations-endgeraeten ueber die anschlussleitungen
JPH0537603U (ja) * 1991-10-31 1993-05-21 マルヤス工業株式会社 燃料配管用プロテクター
JP5015442B2 (ja) * 2005-10-11 2012-08-29 ローム株式会社 電流検出回路およびそれを用いた受光装置ならびに電子機器
WO2007043282A1 (fr) 2005-10-11 2007-04-19 Rohm Co., Ltd. Circuit de détection de courant, photorécepteur l'utilisant, dispositif de commande électroluminescent et dispositif électronique l'utilisant

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495645B1 (fr) * 1970-02-07 1974-02-08
CA930488A (en) * 1971-08-27 1973-07-17 C. J. Cowpland Michael Power supply
CH592392A5 (en) * 1975-09-30 1977-10-31 Sodeco Compteurs De Geneve Telephone circuit without inductances - couples microphone amplifiers output to subscriber line and consists of DC feedback transistor in series with Zener diode

Also Published As

Publication number Publication date
DE3008259C2 (de) 1982-10-21
US4319094A (en) 1982-03-09
FR2460576B1 (fr) 1984-11-30
JPS568956A (en) 1981-01-29
DK91480A (da) 1981-01-04
DK155068C (da) 1989-07-03
SE8001541L (sv) 1981-01-04
CA1132735A (fr) 1982-09-28
FR2460576A1 (fr) 1981-01-23
GB2052213B (en) 1983-07-27
GB2052213A (en) 1981-01-21
JPS596549B2 (ja) 1984-02-13
DK155068B (da) 1989-01-30
DE3008259A1 (de) 1981-01-08

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