Load circuit for a differential driver
US5012384A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1990 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Feb 20, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0266
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
There is disclosed an improved output circuit for use with a differential line driver which drives a parallel inductance and resistance load coupled across the line driver output. The output circuit substantially reduces the kickback voltage produced across the load which results from a residual magnetizing current being stored in the load inductance. The output circuit includes an impedance means which is coupled across the output terminals and a common mode current source coupled between the impedance means and a common potential for sinking a portion of the residual magnetizing current to reduce the amount of residual magnetizing current flowing through the load resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.