IT1079588B - Generatore di chiamata statico per sistemi di telecomunicazioni - Google Patents

Generatore di chiamata statico per sistemi di telecomunicazioni

Info

Publication number
IT1079588B
IT1079588B IT20252/77A IT2025277A IT1079588B IT 1079588 B IT1079588 B IT 1079588B IT 20252/77 A IT20252/77 A IT 20252/77A IT 2025277 A IT2025277 A IT 2025277A IT 1079588 B IT1079588 B IT 1079588B
Authority
IT
Italy
Prior art keywords
telecommunications systems
call generator
static call
static
generator
Prior art date
Application number
IT20252/77A
Other languages
English (en)
Inventor
Augusto Rimondini
Giuseppe Balzarini
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Priority to IT20252/77A priority Critical patent/IT1079588B/it
Priority to MX172073A priority patent/MX147069A/es
Priority to BR7800784A priority patent/BR7800784A/pt
Priority to FR7803956A priority patent/FR2380676A1/fr
Priority to US05/877,612 priority patent/US4152670A/en
Priority to DE19782806198 priority patent/DE2806198A1/de
Priority to GB5801/78A priority patent/GB1567725A/en
Application granted granted Critical
Publication of IT1079588B publication Critical patent/IT1079588B/it

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
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Inverter Devices (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Rectifiers (AREA)
IT20252/77A 1977-02-14 1977-02-14 Generatore di chiamata statico per sistemi di telecomunicazioni IT1079588B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IT20252/77A IT1079588B (it) 1977-02-14 1977-02-14 Generatore di chiamata statico per sistemi di telecomunicazioni
MX172073A MX147069A (es) 1977-02-14 1978-01-17 Mejoras en generador de llamada estatico para sistemas de telecomunicacion
BR7800784A BR7800784A (pt) 1977-02-14 1978-02-10 Gerador estatico de chamada para sistemas de telecomunicacao
FR7803956A FR2380676A1 (fr) 1977-02-14 1978-02-13 Generateur d'appel statique pour systemes de telecommunications
US05/877,612 US4152670A (en) 1977-02-14 1978-02-14 Signal generator, especially for ringing current in telecommunication system
DE19782806198 DE2806198A1 (de) 1977-02-14 1978-02-14 Statischer rufgenerator zur erzeugung einer sinusschwingung
GB5801/78A GB1567725A (en) 1977-02-14 1978-02-14 Calling generators for telecommunications systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20252/77A IT1079588B (it) 1977-02-14 1977-02-14 Generatore di chiamata statico per sistemi di telecomunicazioni

Publications (1)

Publication Number Publication Date
IT1079588B true IT1079588B (it) 1985-05-13

Family

ID=11165156

Family Applications (1)

Application Number Title Priority Date Filing Date
IT20252/77A IT1079588B (it) 1977-02-14 1977-02-14 Generatore di chiamata statico per sistemi di telecomunicazioni

Country Status (7)

Country Link
US (1) US4152670A (it)
BR (1) BR7800784A (it)
DE (1) DE2806198A1 (it)
FR (1) FR2380676A1 (it)
GB (1) GB1567725A (it)
IT (1) IT1079588B (it)
MX (1) MX147069A (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422300A1 (fr) * 1978-04-03 1979-11-02 Trt Telecom Radio Electr Joncteur comportant un amplificateur de puissance symetrique pour alimenter la ligne d'abonne
CA1114536A (en) * 1978-12-11 1981-12-15 William B. Kiss Ringing generator
CA1118922A (en) * 1979-06-29 1982-02-23 Northern Telecom Limited Universal signal generator for generating telephone system high level signals
US4354062A (en) * 1980-01-31 1982-10-12 Bell Telephone Laboratories, Incorporated Communication system signaling circuit
US4349703A (en) * 1980-03-31 1982-09-14 International Telephone And Telegraph Corporation Programmable ring signal generator
SE455978B (sv) * 1980-12-19 1988-08-22 Ellemtel Utvecklings Ab Pulsbreddsmodulerad effektforsterkare for att i beroende av en styrande insignal omvandla en likspenning till en lagfrekvent utsignal
GB2187312A (en) * 1986-02-06 1987-09-03 Hymatic Eng Co Ltd Switching bridge circuit
GB2188173B (en) * 1986-02-27 1990-03-07 Derritron Group Electric power source
GB8606151D0 (en) * 1986-03-12 1986-04-16 Gen Electric Co Plc Telephone system circuit
FR2686759B1 (fr) * 1992-01-29 1994-04-22 Sgs Thomson Microelectronics Dispositif de regulation de puissance pour un haut-parleur de poste de telephone pendant une sonnerie .
SE502276C2 (sv) * 1994-01-21 1995-09-25 Ericsson Telefon Ab L M Förfarande och anordning för generering av en ringsignal
US5905407A (en) * 1997-07-30 1999-05-18 Motorola, Inc. High efficiency power amplifier using combined linear and switching techniques with novel feedback system
US9263997B2 (en) * 2013-03-14 2016-02-16 Quantance, Inc. Self setting power supply using negative output impedance

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829646B2 (ja) * 1974-11-02 1983-06-24 ソニー株式会社 パルス幅変調増幅器
US4016501A (en) * 1975-12-29 1977-04-05 Motorola, Inc. Switching amplifier system
US4092610A (en) * 1977-02-17 1978-05-30 Raytheon Company Modulated carrier amplifying system

Also Published As

Publication number Publication date
DE2806198A1 (de) 1978-12-14
MX147069A (es) 1982-09-30
BR7800784A (pt) 1978-12-05
GB1567725A (en) 1980-05-21
US4152670A (en) 1979-05-01
FR2380676A1 (fr) 1978-09-08
FR2380676B1 (it) 1982-03-19

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