SE447043B - Ringsignalgenerator - Google Patents

Ringsignalgenerator

Info

Publication number: SE447043B
Authority: SE; Sweden
Prior art keywords: signal; ring; level; level signal; signal generator
Prior art date: 1977-03-08

Application number

SE7802478A

Other languages

English (en)

Swedish (sv)

Other versions

SE7802478L (sv

Inventor

G M M Ferrieu

Original Assignee

Trt Telecom Radio Electr

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.)

1977-03-08

Filing date

1978-03-06

Publication date

1986-10-20

1978-03-06 Application filed by Trt Telecom Radio Electr filed Critical Trt Telecom Radio Electr

1978-09-09 Publication of SE7802478L publication Critical patent/SE7802478L/xx

1986-10-20 Publication of SE447043B publication Critical patent/SE447043B/sv

Links

238000004804 winding Methods 0.000 description 7
229920006395 saturated elastomer Polymers 0.000 description 3
238000001228 spectrum Methods 0.000 description 3
230000002238 attenuated effect Effects 0.000 description 2
230000000295 complement effect Effects 0.000 description 2
238000010586 diagram Methods 0.000 description 2
238000005070 sampling Methods 0.000 description 2
241000208140 Acer Species 0.000 description 1
230000005540 biological transmission Effects 0.000 description 1
239000003990 capacitor Substances 0.000 description 1
235000013601 eggs Nutrition 0.000 description 1
230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
238000000034 method Methods 0.000 description 1
239000004065 semiconductor Substances 0.000 description 1

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)
Devices For Supply Of Signal Current (AREA)
Filters And Equalizers (AREA)
Interface Circuits In Exchanges (AREA)

SE7802478A 1977-03-08 1978-03-06 Ringsignalgenerator SE447043B (sv)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7706756A FR2383568A1 (fr)	1977-03-08	1977-03-08	Dispositif destine a engendrer un signal d'appel et utilisable notamment dans un joncteur d'abonne

Publications (2)

Publication Number	Publication Date
SE7802478L SE7802478L (sv)	1978-09-09
SE447043B true SE447043B (sv)	1986-10-20

Family

ID=9187731

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE7802478A SE447043B (sv)	1977-03-08	1978-03-06	Ringsignalgenerator

Country Status (8)

Country	Link
US (1)	US4174467A (fr)
JP (1)	JPS53110410A (fr)
BE (1)	BE864603A (fr)
DE (1)	DE2807916C3 (fr)
FR (1)	FR2383568A1 (fr)
GB (1)	GB1548546A (fr)
NL (1)	NL7802420A (fr)
SE (1)	SE447043B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4270028A (en) *	1979-09-24	1981-05-26	Gte Automatic Electric Laboratories Incorporated	Digitally activated ringing circuit for generation of AC voltages
US4354062A (en) *	1980-01-31	1982-10-12	Bell Telephone Laboratories, Incorporated	Communication system signaling circuit
NL8000859A (nl) *	1980-02-12	1981-09-01	Philips Nv	Inrichting voor het toevoeren van een wekspanning aan een abonneelijn.
US4393491A (en) *	1980-11-05	1983-07-12	Anaconda-Ericsson	Automatic self-test system for a digital multiplexed telecommunication system
US4436960A (en)	1982-01-11	1984-03-13	Bell Telephone Laboratories, Incorporated	Telephone ringing signal generator
US4524246A (en) *	1982-07-07	1985-06-18	Harris Corporation	SLIC II--common-mode current rejection
IE54008B1 (en) *	1982-11-17	1989-05-10	Lake Electronic Tech	Apparatus for delivering a signal on a telephone
US4500844A (en) *	1983-05-20	1985-02-19	At&T Bell Laboratories	Ringing signal generator employing delta-modulation power amplification techniques
US5233649A (en) *	1990-08-30	1993-08-03	Guerra Jr Roy H	Telephone ringing module
DE4406500A1 (de) *	1994-02-28	1995-08-31	Siemens Ag	Schaltungsanordnung zur verlustarmen Erzeugung einer Wechselspannung
GB2358989B (en) *	2000-02-03	2004-01-21	Lake Electronic Tech	A circuit for developing an ac ringing voltage from a dc voltage supply

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2138548B1 (fr) *	1971-05-19	1973-05-25	Ibm France
US3723662A (en) *	1971-12-09	1973-03-27	Gte Automatic Electric Lab Inc	D.c. compensated subscriber interface transformer circuit for telephone system

1977
- 1977-03-08 FR FR7706756A patent/FR2383568A1/fr active Granted
1978
- 1978-02-17 US US05/878,667 patent/US4174467A/en not_active Expired - Lifetime
- 1978-02-24 DE DE2807916A patent/DE2807916C3/de not_active Expired
- 1978-03-03 GB GB8529/78A patent/GB1548546A/en not_active Expired
- 1978-03-04 JP JP2407278A patent/JPS53110410A/ja active Granted
- 1978-03-06 SE SE7802478A patent/SE447043B/sv not_active IP Right Cessation
- 1978-03-06 NL NL7802420A patent/NL7802420A/xx not_active Application Discontinuation
- 1978-03-06 BE BE185698A patent/BE864603A/fr not_active IP Right Cessation

Also Published As

Publication number	Publication date
BE864603A (fr)	1978-09-06
FR2383568A1 (fr)	1978-10-06
DE2807916C3 (de)	1982-03-25
JPS53110410A (en)	1978-09-27
DE2807916B2 (de)	1981-07-02
JPS567341B2 (fr)	1981-02-17
SE7802478L (sv)	1978-09-09
US4174467A (en)	1979-11-13
GB1548546A (en)	1979-07-18
FR2383568B1 (fr)	1979-07-13
DE2807916A1 (de)	1978-09-21
NL7802420A (nl)	1978-09-12

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Legal Events

Date

Code

Title

Description

1995-01-31

NUG

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