Abstract: A lighting apparatus includes a first light source, a second light source, a current controller, a current source and a signal converter. The first light source and the second light source are two light sources of a light source set. The light source set may further include more light source of same type of different type. The current source is controlled by the current controller for generating a first driving current to the first light source and for generating a second driving current to the second light source. The signal converter converts a first type control signal to a second type control signal. The first type control signal indicates a light parameter to be produced by the light source set and the second light source. The second type control signal is supplied to the current controller to determine the first driving current and the second driving current.

Abstract: A lighting apparatus includes a power circuit, multiple light sources, a power failure detection circuit, a wall switch decoder and a controller. The power circuit converts an external power source to multiple driving currents. The multiple light sources respectively receive the multiple driving currents to generate a required mixed light. The power failure detection circuit is coupled to the power circuit for detecting a predetermined power failure pattern. When the predetermined power failure pattern is detected, the power failure detection circuit generates a failure signal. The wall switch decoder is coupled to a wall switch via a signal wire for converting a manual operation to a corresponding switch parameter. The failure signal activates a mode switch in the controller to select a working mode. The switch parameter is interpreted with different setting instructions under different working modes.

Abstract: An illuminating system includes a power source, an on/off switch, an examining module, an illuminating module and a master module. The power source supplies power. The on/off switch switches on or switches off the power from the power source. The examining module detects whether the on/off switch is switched off and whether the on/off switch's switched-off state lasts over a predetermined time interval. In addition, the examining module generates an adjust signal corresponding to a result of detecting the on/off switch. The illuminating module includes a plurality of illuminating elements. The master module adjusts a total current forwarded to and current ratios among the plurality of illuminating elements according to the adjust signal.

Abstract: A LED lighting apparatus has a circuit board and a base. The base is a hollow structure. The base with lateral wall has a conducting element. The circuit board is in the base and has a LED power driving circuit and a LED source. The LED power driving circuit has a full-bridge rectification. A ?-filter circuit and a non-isolated switch driving circuit connected in order. An output terminal of the non-isolated switch driving circuit is connected with the LED source. The full-bridge rectification, the ?-filter circuit and the non-isolated switch driving circuit are common grounded to form a power ground. The power ground is electronically connected with the conducting element in order to reduce the interference of an electromagnetic energy generated by the high-frequency switch signal to other appliances.

Abstract: A lighting apparatus includes a rectifier, a constant current circuit, a first LED series, a second LED series, a third LED series and a controller. The rectifier converts an alternating current power to a direct current power. The constant current circuit generates a first driving current, a second driving current and a third driving current derived from the direct current power. The controller has a first mode to only turn on the first LED series and to turn off the second LED series and the third LED series. The controller has a second mode to adjust the first PWM signal, the second PWM signal and the third PWM signal to generate a corresponding color temperature.

Abstract: A lighting apparatus includes a driver, a metal plate, a light source module and a conductor unit. The driver receives an alternating current power source and converts the alternating current power source to a driving current. The metal plate is electrically connected to a ground. The light source module has a substrate and multiple LED modules. The multiple LED modules are mounted on the substrate. The substrate is disposed upon the metal plate. The conductor unit has a first end connected to the substrate of the light source module and a second end connected to the metal plate for removing a parasitic capacitance between the substrate of the light source and the metal plate for preventing a noise occurred when the LED module is turned on and the metal plate is connected to the ground.

Abstract: A linear luminance adjusting circuit includes a rectifying circuit, a constant voltage circuit, a control module, a linear constant current circuit and a hybrid luminance circuit. The rectifying circuit rectifies power from the AC power source to generated a rectified voltage. The constant voltage circuit transforms the rectified voltage into a constant voltage. The control module is electrically coupled to the constant voltage circuit. The control module generates a control signal using the constant voltage. The linear constant current circuit is electrically coupled to the rectifying circuit and the control module. The linear constant current circuit is powered up using the rectifying voltage. And the linear constant current circuit generates a linear current using the control signal. The hybrid luminance circuit is electrically coupled to the rectifying circuit and the linear constant current circuit. The hybrid luminance circuit illuminates using the linear current.

Abstract: A lighting apparatus includes a first LED module, a second LED module, a third LED module, a constant current generator, a first switch, a third switch and a driver. The constant current generator is used for generating a constant current according to a major PWM signal. The first LED module and the third LED module are connected in parallel and share the constant current. The constant current is adjusted by changing a major duty ratio of the major PWM signal. The driver is used for generating the major PWM signal, a first PWM signal and a third PWM signal. The first color temperature profile, the second color temperature profile and the third color temperature profile have different spectrum distributions.

Abstract: A LED lighting apparatus has a circuit board and a base. The base is a hollow structure. The base with lateral wall has a conducting element. The circuit board is in the base and has a LED power driving circuit and a LED source. The LED power driving circuit has a full-bridge rectification. A ?-filter circuit and a non-isolated switch driving circuit connected in order. An output terminal of the non-isolated switch driving circuit is connected with the LED source. The full-bridge rectification, the ?-filter circuit and the non-isolated switch driving circuit are common grounded to form a power ground. The power ground is electronically connected with the conducting element in order to reduce the interference of an electromagnetic energy generated by the high-frequency switch signal to other appliances.

Abstract: A LED sensing light driving circuit includes a rectifying filter circuit, a buck power-supplying circuit, a constant current driving circuit, a sensing signal generating circuit, and a hysteresis comparator circuit. The rectifying filter circuit has a DC output terminal supplies power to the sensing signal generating circuit and the hysteresis comparator circuit via the buck power-supplying circuit. The sensing signal generating circuit reduces a voltage at a first input terminal of the hysteresis comparator circuit in response to increase or decrease of surrounding luminance.

Abstract: A LED sensing light driving circuit includes a rectifying filter circuit, a buck power-supplying circuit, a constant current driving circuit, a sensing signal generating circuit, and a hysteresis comparator circuit. The rectifying filter circuit has a DC output terminal supplies power to the sensing signal generating circuit and the hysteresis comparator circuit via the buck power-supplying circuit. The sensing signal generating circuit reduces a voltage at a first input terminal of the hysteresis comparator circuit in response to increase or decrease of surrounding luminance.