Method and arrangement for choosing supply voltage
US6542605B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1999 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Jun 1, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M19/005
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Line circuits can be supplied with a first voltage or a second voltage of a lower absolute value. At least the second voltage is variable. The line voltages of at least active line circuits are measured, and possible values for the second voltage are prognosticated. It is determined which line circuits can be supplied with the respective possible value, and the power consumption of those line circuits is calculated using each possible value. For the line circuits which cannot be so supplied, the power consumption is calculated using the first voltage. For each possible value prognosticated for the second voltage, the total power consumptions are summed, and the value that gives the lowest total power consumption is selected as the second voltage. The line circuits are then supplied with the first voltage or the selected second voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.