Feedback power control system for an electrical component
US7834602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2008 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Jun 12, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A feedback power control system includes: a multiplying unit receiving a work voltage corresponding to a voltage drop of an electrical component, and a feedback voltage corresponding to a work current flowing through the electrical component, and outputting a measuring voltage corresponding to a consumed power of the electrical component and having a value equal to a product of a value of the work voltage and a value of the feedback voltage; a control unit receiving the measuring voltage from the multiplying unit, and a reference voltage, and outputting a control voltage corresponding to a voltage difference between the measuring voltage and the reference voltage; and a regulating unit providing the feedback voltage to the multiplying unit, and including an amplifier that receives the feedback voltage from a series connection of transistor and a resistor coupled to the electrical component, and the control voltage from the control unit and that controls operation of the transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.