Abstract: The present invention provides a downlight, which pertains to the technical field of lighting equipment. The present downlight comprises a downlight housing, an aluminum substrate module and a transparent cover. The transparent cover has a plurality of bayonet-coupling protrusions protruding vertically, the downlight housing has a horizontal ring-shaped support wall, the support wall is provided thereon with bayonet-coupling slots in one-to-one correspondence with the bayonet-coupling protrusions, each of the bayonet-coupling slots comprises circumferentially arranged a wide slot segment and a narrow slot segment, and each of the bayonet-coupling protrusions is capable of inserting vertically into the wide slot segment of one of the corresponding bayonet-coupling slots and sliding circumferentially along the one of the corresponding bayonet-coupling slots to the narrow slot segment where the bayonet-coupling protrusion abuts with its lower end surface against the support wall.

Abstract: The present light-actuated wide voltage range LED lamp driver circuit includes a rectifier module, two LED modules, a detection module, a control module, a light actuated module, an actuator and a main relay. The output terminals of the rectifier module are connected to the detection module and the control module respectively, and the detection module and the two LED modules are respectively connected to the control module. The detection module includes a transistor Q1 and a transistor Q2. In the low voltage range, both of the transistor Q1 and the transistor Q2 are turned off, making the two LED lamp modules connected in parallel; while In the high voltage range, both of the transistor Q1 and the transistor Q2 are turned on, making the two LED lamp modules connected in series.

Abstract: The present light-actuated wide voltage range LED lamp driver circuit includes a rectifier module, two LED modules, a detection module, a control module, a light actuated module, an actuator and a main relay. The output terminals of the rectifier module are connected to the detection module and the control module respectively, and the detection module and the two LED modules are respectively connected to the control module. The detection module includes a transistor Q1 and a transistor Q2. In the low voltage range, both of the transistor Q1 and the transistor Q2 are turned off, making the two LED lamp modules connected in parallel; while In the high voltage range, both of the transistor Q1 and the transistor Q2 are turned on, making the two LED lamp modules connected in series.