| 摘要 |
<p>The present invention relates to a power-saving magnetic ballast capable of controlling illumination intensity, and more particularly, to a magnetic ballast capable of saving power by properly operating in response to various conditions exerting an effect on driving a lamp, such as the status of an AC input power source, the status of a lamp, ambient temperature, and illumination intensity in external environment, by automatically or manually controlling turning on/off the lamp, and by controlling the illumination intensity of the lamp according to the external environment. Especially, the magnetic ballast of the present invention can be effectively applied to street lamps in underdeveloped countries or in cold areas by adequately responding to the status of the input power source and by automatically generating an ignition voltage corresponding to ambient temperature.</p> |
