Power regulation of LED by means of an average value of the LED current and bidirectional counter
US9060406B2 · kind B2 · utility
2Cited by
2References
35Claims
0Family size
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Key dates
| Filing date | Mar 26, 2010 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit for the power regulation of an LED comprises a converter having a switch. The LED is interconnected in an output circuit, wherein a control unit controls the magnetization of an inductor, in that it actively clocks the switch. A measured actual value representative of the average value of the LED current is returned to the control unit and compared to a reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.