| 主权项 |
1. A lighting device, comprising:
a step-down circuit configured to convert an input voltage into a DC voltage by no insulation; and a control circuit configured to control the step-down circuit, wherein the step-down circuit has an input end, the step-down circuit being provided on a side of the input end with an overcurrent protector, the overcurrent protector being configured to be fused by flowing of an overcurrent, wherein the step-down circuit has an output end, a side of which is connected in parallel with a switching circuit, the switching circuit comprising a switching element, and wherein the control circuit is configured to turn on the switching element according to an output voltage of the step-down circuit. |
