Piezoelectric resonator light-emitting-diode (LED) driving circuit
US8860322B2 · kind B2 · utility
6Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/382
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric resonant LED driving circuit, wherein a rectifier is used to rectify an AC voltage provided by the supply main into a DC voltage. Then, a quasi-resonant switching module performs resonance by means of the DC voltage to produce an induced current, to raise resonance frequency to operation frequency of a piezoelectric oscillator. Finally, the piezoelectric oscillator performs resonance and filtering using the induced current, to generate a sine wave current. Then, the sine wave current is rectified to output a DC current to drive an LED module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.