Universal output driver
US6614666B1 · kind B1 · utility
3Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | May 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0272
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A circuit for driving a communication line includes a transformer having a secondary winding for supplying an output drive signal, and having a primary winding connected to conduct current through a control element that receives a control signal which stabilizes the amplitude of output drive signal, independent of variations in supply voltage. A control circuit produces the control signal in response to the difference of signals produced across conductive elements that are connected to separate current sources which supply currents determined by arithmetic relationships between the values of different supply voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.