Power dissipation manager circuit for an interface device feeding a subscriber telephone line
US5596637A · kind A · utility
23Cited by
7References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 2, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | May 2, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit for limiting power dissipation through telephone subscriber line power supply interface devices, by using a pair of final stages to which an external component effective to dissipate power is connected. By use of separate discrete reference circuits, the presence of excessive common mode current is detected; and when this occurs, current to the driver stages is controlled at a lower magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.