Instrument power controller and method for adaptively providing an output voltage and an output current that together maintain a substantially constant electrical output power
US8332168B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 28, 2007 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Aug 24, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F15/024
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument power controller (120) for adaptively providing an output voltage VO and an output current IO that together maintain a substantially constant electrical output power PO is provided. The controller (120) includes inputs (121) for receiving an input power PI, outputs (122) for providing the substantially constant output power PO to a variable impedance load L, and a communication path (126) for receiving a load voltage VL. The instrument power controller (120) is configured to determine an input voltage VI and an input current II, determine an effective resistance RL of the load L and set the output voltage VO and the output current IO based on the input voltage VI, the input current II, and the effective resistance RL. The output voltage VO is substantially independent from the input voltage VI. The output voltage VO and the output current IO are varied to maximize a load power PL while maintaining the substantially constant electrical output power PO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.