| 摘要 |
A plasma lighting system is provided to repeat a cycle activating a plasma condition of a bulb by momentarily oscillating a magnetron by high electric power. In a plasma lighting system, a power unit(41) applies an operation AC power to the plasma lighting system. A rectifying unit(42) outputs almost DC power by rectifying and smoothing AC power inserted through the power unit(41). A microcomputer(44) outputs a switching control signal by detecting an optimal duty ratio which minimizes a switching damage. An inverter unit(43) receives the output of the rectifying unit(42), the DC power, and outputs the AC power by inverting the DC power by the switching control signal. A transforming unit(45) induces power to a second side in consideration of the AC power of the inverter unit(43) and a number of windings of a first side. A high voltage generation unit(46) generates high voltage by pressurizing the voltage induced through the transforming unit(45). And, a magnetron(47) receives the high voltage generated by the high voltage generation unit(46) as the driving voltage and generates a micro wave.
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