| 摘要 |
A light device comprising a light emitting unit (2), a voltage control unit (3), and a current control unit (4) is provided. The light emitting unit (2) is capable of receiving DC power. The voltage control unit (3) has a power input terminal (31), a power output terminal (32), and a voltage setting member (35), with the power input terminal (31) connecting with the light emitting unit (2), the voltage setting member (35) having a threshold value to control the voltage of the power output terminal in a value equal to or lower than the threshold value. The current control unit (4) has a voltage regulating member (41) and a current adjusting member (42), with the voltage regulating member (41) connecting with the power output terminal (32) of the voltage control unit (3) and generating a stable DC voltage, and with the current adjusting member (42) connected between the voltage regulating member (41) and a ground point to stabilize a current passing through the current adjusting member (42). |
