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Arrangements for compensation of the DC flux in line transformers
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H04M19/003
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H
ELECTRICITY
H04
Electric communication
H04M
TELEPHONIC COMMUNICATION
H04M19/00
Current supply arrangements for telephone systems
Current Industry
H04M19/003
Arrangements for compensation of the DC flux in line transformers
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Patents Grants
last 30 patents
Information
Patent Grant
Circuit arrangement for reducing a unidirectional flux component in...
Patent number
9,941,046
Issue date
Apr 10, 2018
Siemens Aktiengesellschaft
Peter Hamberger
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Load balancing reverse power supply
Patent number
9,319,537
Issue date
Apr 19, 2016
Microsemi Corporation
Arkadiy Peker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Trunk interface circuit having function of battery feed to central...
Patent number
6,144,737
Issue date
Nov 7, 2000
Matsushita Electric Industrial Co., Ltd.
Kenichi Maruyama
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Flux cancelling transformer line circuit
Patent number
6,020,732
Issue date
Feb 1, 2000
Modern Systems Research, Inc.
Samuel F. Wood
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
DC application circuit with suppressed DC magnetization
Patent number
5,796,279
Issue date
Aug 18, 1998
Tokyo Tsuki Co., Ltd.
Kazuhiro Umeda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Battery feed for telephone line cards
Patent number
5,444,777
Issue date
Aug 22, 1995
AT&T Corp.
Joseph H. Condon
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit for applying direct current to winding
Patent number
5,414,309
Issue date
May 9, 1995
Tokyo Tsuki Co., Ltd.
Syuzi Ichikawa
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transformer telephone line interface circuit
Patent number
5,274,704
Issue date
Dec 28, 1993
Northern Telecom Limited
Gyula Jakab
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Circuit arrangement for the transmission of telecommunication signals
Patent number
5,253,290
Issue date
Oct 12, 1993
KE Kommunications Elektronik
Martin Brahms
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Subscriber line interface circuit providing regulated current
Patent number
5,138,658
Issue date
Aug 11, 1992
Seiscor Technologies Inc.
Dan K. Carter
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telecommunications line interface circuits
Patent number
4,982,426
Issue date
Jan 1, 1991
Northern Telecom Limited
Gyula Jakab
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone line interface circuit
Patent number
4,864,609
Issue date
Sep 5, 1989
Northern Telecom Limited
Mihail S. Moisin
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Line circuit with flux compensation and active impedance termination
Patent number
4,503,289
Issue date
Mar 5, 1985
AT&T Bell Laboratories
Dewayne A. Spires
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Start-up circuit for negative inductance multiplier
Patent number
4,467,269
Issue date
Aug 21, 1984
GTE Automatic Electric Inc.
Thomas J. Barzen
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Negative inductance multiplier circuit including temperature compen...
Patent number
4,463,307
Issue date
Jul 31, 1984
GTE Automatic Electric Inc.
Frederick J. Kiko
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Interface circuit with flux cancelling transformer circuit
Patent number
4,414,435
Issue date
Nov 8, 1983
Northern Telecom Limited
Bryan R. Parlor
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Trunk interface circuit with current compensation
Patent number
4,361,732
Issue date
Nov 30, 1982
Northern Telecom Limited
Samuel F. Wood
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission bridge for a subscriber set
Patent number
4,319,093
Issue date
Mar 9, 1982
Compagnie Industrielle des Telecommunications Cit-Alcatel
Gerard Bars
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone line circuit
Patent number
4,243,842
Issue date
Jan 6, 1981
Northern Telecom Limited
William D. Gibb
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Fluxbucking line transformer with electronic equivalent line termin...
Patent number
4,241,239
Issue date
Dec 23, 1980
International Telephone & Telegraph Corporation
Joseph Pernyeszi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Feeding bridge with d.c.-compensation for both directions of the fe...
Patent number
4,234,763
Issue date
Nov 18, 1980
U.S. Philips Corporation
Eise C. Dijkmans
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Feeding bridge
Patent number
4,110,636
Issue date
Aug 29, 1978
U.S. Philips Corporation
Eise C. Dijkmans
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Telephone line circuit with differential loop current sensing and c...
Patent number
4,103,112
Issue date
Jul 25, 1978
Northern Telecom Limited
Vincent Viacheslav Korsky
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Transmission network including flux compensation
Patent number
4,096,363
Issue date
Jun 20, 1978
Bell Telephone Laboratories, Incorporated
Ronald Lee Earp
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Direct current compensation circuit for transformers
Patent number
4,064,449
Issue date
Dec 20, 1977
GTE Automatic Electric Laboratories Incorporated
Max S. Macrander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Line circuit using miniature line transformer
Patent number
4,046,967
Issue date
Sep 6, 1977
Bell Telephone Laboratories, Incorporated
John Francis O'Neill
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Integrable line circuit for use with miniature line transformer
Patent number
4,046,968
Issue date
Sep 6, 1977
Bell Telephone Laboratories, Incorporated
Milton Luther Embree
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Dial pulse repeating line circuit using miniature line transformer
Patent number
4,046,969
Issue date
Sep 6, 1977
Bell Telephone Laboratories, Incorporated
James Edwin Dalley
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Direct current compensation circuit with current threshold detection
Patent number
4,027,235
Issue date
May 31, 1977
GTE Automatic Electric Laboratories Incorporated
Max S. Macrander
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Communication system interface circuits
Patent number
4,011,410
Issue date
Mar 8, 1977
Robert M. Thomas
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
LOAD BALANCING REVERSE POWER SUPPLY
Publication number
20150304508
Publication date
Oct 22, 2015
MICROSEMI CORPORATION
Arkadiy Peker
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Line interface for combining a voice band signal and an XDSL signal...
Publication number
20030138082
Publication date
Jul 24, 2003
Ferdinando Lari
H04 - ELECTRIC COMMUNICATION TECHNIQUE