Abstract: Disclosed is an LED lighting apparatus capable of improving a power factor and temperature characteristics. The LED lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of LED channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.

Abstract: The present invention discloses a dimming regulation circuit which stabilizes a rectified voltage in response to an unstable output voltage of a dimmer and a lighting apparatus including the dimming regulation circuit. The dimming regulation circuit stabilizes the rectified voltage and provides the stabilized rectified voltage to a lamp, when a rectified voltage corresponds to a preset stabilization required range.

Abstract: Provided is a bulb-type lighting apparatus which uses an LED as a light source to improve a heat dissipation structure. The bulb-type lighting apparatus may include heat dissipation bodies in surface contact with a substrate having a semiconductor light emitting device mounted thereon, and dissipate heat of the substrate using the heat dissipation bodies.

Abstract: Provided is a control circuit of a light emitting diode (LED) lighting apparatus which is capable of reducing a flicker while performing a lighting operation using a rectified voltage. The control circuit may include a charge and discharge module charged to perform a charge operation using a rectified voltage and a discharge operation for LED channels, and the charge and discharge module may provide a discharge current to the LED channels during a discharge period including the lowest current point at which the level of the current supplied to the plurality of LED channels is the lowest. Thus, a flicker of the LED lighting apparatus can be reduced.

Abstract: Disclosed herein are a lighting system for emitting light using power having a phase controlled by a dimmer and improving the light emission state of a light source and a control circuit for the same. Shimmer can be improved by performing charging and discharging using a current supplied to a load or a current flowing in the current path of a load and performing current control using a charging voltage generated by the charging and discharging.

Abstract: Disclosed are a power supply apparatus for an LED lighting and an LED lighting apparatus using the power supply apparatus. The LED lighting apparatus includes a power source unit configured to supply a rectified voltage, a voltage converter configured to include at least one first inductor and to convert the rectified voltage, an auxiliary coil configured to include a second inductor and to supply a detection voltage corresponding to the current of the first inductor of the voltage converter, a controller configured to control the current of the voltage converter using a driving pulse generated in response to a control signal and a sensing voltage, and a voltage regulation circuit configured to regulate the detection voltage and to supply the regulated voltage as an operating voltage for the controller.

Abstract: The present invention discloses an LED lighting apparatus. The LED lighting apparatus includes a converter for transforming rectified voltage in accordance with a switching operation according to a driving pulse and outputting the transformed voltage, a current regulator for generating the driving pulse having a pulse width varied in response to a control signal and the amount of current of the converter and switching the operation of the converter using the generated driving pulse, and a peripheral circuit module for providing the control signal for controlling the dimming of an LED lighting.

Abstract: The present invention relates to a molded foam product, and to a buoyant material and a construction material including same, and particularly, to a molded foam product characterized by including a foam product filled in a frame and having a coating layer formed on the surface of the foam product, wherein films of paint having good physical properties and durability can be formed, and accordingly, a buoyant material and a construction material can be provided which are a little safer and are resistant to impacts.

Abstract: Disclosed is a light emitting diode lighting apparatus capable of improving a power factor and temperature characteristics. The light emitting diode lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of light emitting diode channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.

Abstract: Disclosed is an LED lighting apparatus capable of improving a power factor and temperature characteristics. The LED lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of LED channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.

Abstract: A method and device controlling the temperature of a heating source of an image forming apparatus includes the steps of enabling the temperature of the heating source to be controlled to a print waiting temperature, when power is supplied to the image forming apparatus, gradually lowering the temperature of the heating source over a period of time, to an energy saving temperature lower than the print waiting temperature, when the temperature of the heating source is the print waiting temperature and no printing data is input within a first time interval, gradually lowering the temperature of the heating source over a period of time, to an ambient temperature, when no printing data is input within a second time interval, i.e.