| 摘要 |
PURPOSE: An automatic flickering circuit using light is provided to reduce the power consumption by comparing the current of an input terminal to the current of the illumination detection unit to control the current according to the intensity of illumination. CONSTITUTION: An automatic flickering circuit using light includes an illumination detection unit, a comparator, a switching unit, and a rectification circuit unit. The illumination detection unit(10) detects the indoor intensity of illumination by using a light receiving device. The comparator(20) is used for comparing the current of the illumination detection unit to the current of a power supply. The amplification unit(30) amplifies the output current of the comparator. The switching unit(40) selects one of the current of an input terminal and the current of the amplification unit. The rectification circuit unit includes a transformer and a diode bridge to convert the AC current of the input terminal to the DC current.
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