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NL8802945A - Electronisch telefoontoestel. - Google Patents

Electronisch telefoontoestel. Download PDF

Info

Publication number
NL8802945A
NL8802945A NL8802945A NL8802945A NL8802945A NL 8802945 A NL8802945 A NL 8802945A NL 8802945 A NL8802945 A NL 8802945A NL 8802945 A NL8802945 A NL 8802945A NL 8802945 A NL8802945 A NL 8802945A
Authority
NL
Netherlands
Prior art keywords
transistor
terminal
main electrode
resistor
coupled
Prior art date
Application number
NL8802945A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL8802945A priority Critical patent/NL8802945A/nl
Priority to US07/427,440 priority patent/US4953207A/en
Priority to EP89202992A priority patent/EP0372616B1/en
Priority to DE68914417T priority patent/DE68914417T2/de
Priority to KR1019890017213A priority patent/KR0132774B1/ko
Priority to JP1306749A priority patent/JPH02189052A/ja
Priority to AU45678/89A priority patent/AU622594B2/en
Publication of NL8802945A publication Critical patent/NL8802945A/nl

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • 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)
  • Amplifiers (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL8802945A 1988-11-30 1988-11-30 Electronisch telefoontoestel. NL8802945A (nl)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL8802945A NL8802945A (nl) 1988-11-30 1988-11-30 Electronisch telefoontoestel.
US07/427,440 US4953207A (en) 1988-11-30 1989-10-24 Electronic telephone set
EP89202992A EP0372616B1 (en) 1988-11-30 1989-11-24 Electronic telephone set
DE68914417T DE68914417T2 (de) 1988-11-30 1989-11-24 Elektronischer Fernsprechapparat.
KR1019890017213A KR0132774B1 (ko) 1988-11-30 1989-11-27 전자식 전화기
JP1306749A JPH02189052A (ja) 1988-11-30 1989-11-28 電子化電話機
AU45678/89A AU622594B2 (en) 1988-11-30 1989-11-29 Electronic telephone set

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8802945A NL8802945A (nl) 1988-11-30 1988-11-30 Electronisch telefoontoestel.
NL8802945 1988-11-30

Publications (1)

Publication Number Publication Date
NL8802945A true NL8802945A (nl) 1990-06-18

Family

ID=19853312

Family Applications (1)

Application Number Title Priority Date Filing Date
NL8802945A NL8802945A (nl) 1988-11-30 1988-11-30 Electronisch telefoontoestel.

Country Status (7)

Country Link
US (1) US4953207A (ko)
EP (1) EP0372616B1 (ko)
JP (1) JPH02189052A (ko)
KR (1) KR0132774B1 (ko)
AU (1) AU622594B2 (ko)
DE (1) DE68914417T2 (ko)
NL (1) NL8802945A (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982879A (en) * 1992-04-03 1999-11-09 Unex Corporation Telephone headset amplifier and method of operation
GB2289188B (en) * 1994-04-26 1998-09-09 Motorola Inc Telephone line interface cicuit
GB2289187B (en) * 1994-04-26 1999-01-20 Motorola Inc Telephone line interface circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183964B (en) * 1985-11-28 1989-10-11 Stc Plc Telephone power supply

Also Published As

Publication number Publication date
EP0372616A1 (en) 1990-06-13
DE68914417T2 (de) 1994-10-13
KR900008808A (ko) 1990-06-04
EP0372616B1 (en) 1994-04-06
DE68914417D1 (de) 1994-05-11
KR0132774B1 (ko) 1998-04-25
AU622594B2 (en) 1992-04-09
US4953207A (en) 1990-08-28
JPH02189052A (ja) 1990-07-25
AU4567889A (en) 1990-06-07

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed