Patent
Telephone line data isolator
D Whitby
- 01 Sep 1980
14
TL;DR: In this paper, an isolation device for isolating telephone terminal elements and data transmission and/or receiving modules from telephone lines is proposed. But the isolation device is not suitable for wireless communication.
read more
Abstract: An isolation device, primarily for isolating telephone terminal elements and data transmission and/or receiving modules from telephone lines, whilst enabling telephone and/or encoded data signals to be transferred between the elements/modules and the lines, consisting of a high frequency transformer (16) serving as an isolation barrier, and circuitry including an oscillator (18) capable of representing line signals as modulated voltages across the transformer to produce a direct current across the element/module load, and to represent fluctuations in said direct current at said line. The circuitry also enables direct current to be provided at the load to power and element or module.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Patent
Coupling device to be connected to a dce for the connection to a public switched telephone network having a local power supply circuit for allowing the use of the local telephone,dce and workstation including the same
Bruno Andre,Jacques Fieschi,Martin Jean,Remi Vautier +3 more
- 05 Dec 1990
TL;DR: In this article, the authors proposed a coupling device for the connection of a Data Circuit Terminating Equipment DCE to a given Public Switched Telephone Network PSTN and to a local telephone set.
2
Patent
A method and apparatus for full duplex signaling across a pulse transformer
Russell A. Hershbarger
- 28 May 2004
TL;DR: In this paper, the authors presented a simultaneous bi-directional communication of digital signals across an isolation barrier, such as a pulse transformer, where a voltage driver drives a digital transmit data stream, that is encoded to be DC balanced in both current and voltage domains, across the barrier.
2
Patent
Switch assembly for transferring signals
Ralf Bauermeister,Jonny Rödiger,Doerthe Petri +2 more
- 27 Jun 2012
TL;DR: In this paper, an inductive transformer is coupled with a rectifier to a secondary winding of a primary transformer, and a gate of a FET is connected between power switching terminals (38,39).
Patent
Protector against "Transferred Voltages"
Martinez Luengo Luciano
- 01 Jun 2001
TL;DR: In this article, a transformer with a 1/1 ratio that has insulation for those 5000 V between its primary and secondary terminals is proposed, which is called the PROTECTOR.
References
Patent
Supply-arrangement for a line circuit
Brockmann Klaus-Dieter Karl
- 05 Jun 1978
TL;DR: In this paper, a supply arrangement for a subscriber's line circuit comprising a high frequency pulse source provided with switching means, controlled by a control generator for controlling the mark-space ratio of the high-frequency pulse source.
10
Patent
Subscriber's line equipment for a telephone exchange
Jean Picandet,Andre Baratin +1 more
- 16 Nov 1977
TL;DR: A subscriber's line equipment for a telephone exchange for replacing equipment comprising a telephone transformer or chopper, comprises a telphone line supply circuit comprised of two constant d.c. voltage sources, a transistor functioning as a constant current generator, a transformer connected to rectifying means, two transmitters connected to the primary winding of the transformer, a closed loop detecting circuit and receiving and transmitting circuits connected to receive and transmit signals to the telephone exchange.
9
Related Papers (5)
Arthur L. Serrano
- 14 Oct 1983
Russell A. Hershbarger,Eric Davies +1 more
- 03 Dec 1993
William C. Hatfield,John M. Reed +1 more
- 12 Sep 1972
[...]
Louis David Tate
- 19 Oct 1964