Abstract: A lamp includes a controller, a plurality of light-emitting devices and a plurality of current conversion modules. The controller is configured to output a dimming signal, which is adjusted according to at least one weather factor. The current conversion modules are coupled to the light-emitting devices and configured to generate a current signal according to the dimming signal to control the light-emitting devices, wherein the dimming signal is related to a visible light including a red light or an infrared light emitting characteristic of the light-emitting devices.

Abstract: A power supply unit provides an output voltage to supply power to a load. The power supply unit includes an over-power protection circuit, and the over-power protection circuit includes a switch, a first resistor and a second resistor. When the output voltage is at a first level, the over-power protection circuit turns on the switch according to the output voltage at the first level to provide a first resistance value based on the first resistor and the second resistor in parallel, so as to adjust the over-power protection value of the power converter to a first value. When the output voltage is at the second level, the over-power protection circuit turns off the switch according to the output voltage at the second level to provide a second resistance value of the second resistor, so as to adjust the over-power protection value to a second value.

Abstract: An input-voltage-off detection apparatus includes a voltage adjustment unit, a time delay unit, a voltage clamp unit, an auxiliary voltage discharge switch unit and an isolation notification unit. The voltage adjustment unit receives an input voltage. The time delay unit utilizes the input voltage to generate a direct current voltage. After the input voltage is cut off, the direct current voltage stored in the time delay unit discharges to the voltage adjustment unit. When the direct current voltage reduces to a predetermined voltage, the auxiliary voltage discharge switch unit is turned on, so that an auxiliary voltage winding sends a working voltage to the isolation notification unit. After the isolation notification unit receives the working voltage, the isolation notification unit notifies an electronic apparatus that the input voltage is cut off.

Abstract: An input-voltage-off detection apparatus includes a voltage adjustment unit, a time delay unit, a voltage clamp unit, an auxiliary voltage discharge switch unit and an isolation notification unit. The voltage adjustment unit receives an input voltage. The time delay unit utilizes the input voltage to generate a direct current voltage. After the input voltage is cut off, the direct current voltage stored in the time delay unit discharges to the voltage adjustment unit. When the direct current voltage reduces to a predetermined voltage, the auxiliary voltage discharge switch unit is turned on, so that an auxiliary voltage winding sends a working voltage to the isolation notification unit. After the isolation notification unit receives the working voltage, the isolation notification unit notifies an electronic apparatus that the input voltage is cut off.

Abstract: The present invention is related to the apparatus for driving the light emitting devices with different colors. The input powers of the light emitting devices are measured and controlled by a feedback control system to maintain constant, and by setting different power inputs to the different light emitting devices different stable colors are produced.

Abstract: A figure exhibiting method is disclosed in this invention. The figure exhibiting method includes providing a figure and at least one light source. A number of color areas are included in the figure, inga first color area. The light source projects a variety of color lights onto the figure according to a program. The lights include a first light, which is the complementary color of the first color area in order to create a dark visual effect. Alternatively, a color light that is able to create a reflection of color from the first color area can be projected onto the figure, making the color of the area appear differently than it would under sunlight. A figure exhibiting device is also disclosed in this invention. The figure exhibiting device includes a light guiding plate, a transparent plate, a figure and at least one light source. The figure is clipped between the light guiding plate and the transparent plate. The figure includes a number of color areas, particularly, a first color area.

Abstract: The present invention is related to the apparatus for driving the light emitting devices with different colors. The input powers of the light emitting devices are measured and controlled by a feedback control system to maintain constant, and by setting different power inputs to the different light emitting devices different stable colors are produced.