Directional coupling transformer for bi-directional full duplex data bus
US4707673A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1986 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Jun 10, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/48
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A directional coupler transformer insensitive to data bus termination failures, includes a ferrite toroid core about which first through fourth windings are wound, the first and second windings being for connection in series with each conductor, respectively, of a data bus for sensing or generating data signal current, the third winding being connected in parallel with the data bus conductors for sensing or generating data signal voltage, and a fourth winding inductively coupled to the other three windings for either coupling data signals traveling in one direction from the data bus to a receiving unit, or coupling data signals from a transmitting unit to the data bus for transmission along the data bus in a given direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.