DRIVING DEVICE OF LIGHT EMITTING DIODE AND LIGHTING APPARATUS USING THE SAME
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United States of America Patent
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N/A
Issued Date -
Jun 21, 2012
app pub date -
Jul 13, 2011
filing date -
Dec 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A driving device of light emitting diode (LED) and a lighting apparatus using the same are provided. The diving device is adapted for receiving an AC power adjusted by a dimmer and a transformer unit, and includes a dimming match circuit, a voltage conversion unit, and a driver IC. The dimming match circuit receives the AC power and equalize the energy of a positive and a negative half cycles of the AC power, so as to produce a symmetrical AC power. The voltage conversion unit is coupled to the dimming match circuit, and receives and converts the symmetrical AC power into a stable DC power. The driver IC is coupled to the voltage conversion unit, and receives the stable DC power to drive and adjust the light intensity of an LED unit, and thus flicking of the light source of the LED unit can be avoided during dimming.
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