Abstract: A combination LED lamp and heat sink structure includes a heat sink formed by bending or stamping a metal sheet member into shape to provide a plurality of upright walls and mounting holes, a circuit board carrying a LED or LEDs at the front side and having a plurality of through holes, a plurality of metal connection members mounted in the mounting holes and the through holes to fixedly connect the heat sink and the circuit board together, and a lampshade surrounding the circuit board to let the heat sink be exposed to the outside.

Abstract: An arc LED includes a lamp holder, an arc radiation fin unit mounted at the lamp holder, a circuit board mounted at the arc radiation fin unit and carrying a plurality of LEDs that are mounted in two opposing end areas of the circuit board in a relatively higher density and in the middle area of the circuit board in a relatively lower density, and an arc lampshade covered over the lamp holder.

Abstract: A combination LED lamp and heat sink structure includes a heat sink formed by bending or stamping a metal sheet member into shape to provide a plurality of upright walls and mounting holes, a circuit board carrying a LED or LEDs at the front side and having a plurality of through holes, a plurality of metal connection members mounted in the mounting holes and the through holes to fixedly connect the heat sink and the circuit board together, and a lampshade surrounding the circuit board to let the heat sink be exposed to the outside.

Abstract: A LED cooling structure includes a substrate having a circuit layout and one or a number of thermally conductive plates arranged on the top wall thereof, one or a plurality of through holes cut through the opposing top and bottom walls thereof and a thermally conductive post mounted in each through hole and connected with the thermally conductive plates, and one or a number of light-emitting devices mounted at the substrate and electrically connected to the circuit layout with the bottom side thereof kept in contact with one respective thermally conductive plate for quick dissipation of heat.

Abstract: A dimming circuit includes a resonant unit, a rectification unit, a half-bridge output unit, a first switch device and a second switch device, and a selection unit. The rectification unit is connected to the resonant unit. The half-bridge output unit includes a first electric-controlled switch and a second electric-controlled switch in series. The first and second switch devices are connected to the first and second electric-controlled switches. The selection unit may turn on the first switch device and the second electric-controlled switch when a potential is rising that turns on the discharging lamp and turn off the second switch device and keep turning on the second switch device when the discharging lamp is lighting. The selection unit further turns on the second switch device to turn off the second electric-controlled switch for turning off the discharging lamp in a low power condition.

Abstract: A dimming circuit includes a resonant unit, a rectification unit, a half-bridge output unit, a first switch device and a second switch device, and a selection unit. The rectification unit is connected to the resonant unit. The half-bridge output unit includes a first electric-controlled switch and a second electric-controlled switch in series. The first and second switch devices are connected to the first and second electric-controlled switches. The selection unit may turn on the first switch device and the second electric-controlled switch when a potential is rising that turns on the discharging lamp and turn off the second switch device and keep turning on the second switch device when the discharging lamp is lighting. The selection unit further turns on the second switch device to turn off the second electric-controlled switch for turning off the discharging lamp in a low power condition.

Abstract: A three-level dimming circuit for a discharging lamp includes a first contact, a second contact, and a third contact, a first full-wave rectification circuit connected to the first contact and the third contact, and a second full-wave rectification circuit connected to the first contact and the second contact. A selection circuit includes three resistors and a first electrical controlled switch. A half-wave rectification circuit includes a second electrical controlled switch and a third electrical controlled switch in series connection. The three resistors of the election circuit are the main devices for dimming that the present invention has a lower cost and superior competition in the market.

Abstract: A electric discharge light regulation matching circuit that operates with filaments includes a resonance unit, a converter unit, a charge circuit, a half-bridge output unit and a lamp. The converter unit is connected to the resonance unit to convert an AC current to a DC current. The charge circuit, which has a charge capacity, is connected to the converter unit. The half-bridge output unit includes two electric control switches in series connection. The lamp, which is connected to the charge circuit, includes a first filament and a second filament therein. The first filament has an end connected to the charge capacity to heat the first filament directly that may prevent a flicker problem of the lamp connecting the electric control switch and may provide functions of recycling power and preventing temperature rising.

Abstract: An inexpensive electric discharge light-regulation matching circuit for use with a standard light regulator to regulate the light of an electric discharge without causing flickering is disclosed to include a resonance unit, which comprises a first capacitor and a second capacitor connected in series and a first inductance connected in parallel to the first capacitor and second capacitor, a converter circuit connected to the resonance unit for converting an alternating current into a direct current, a half-bridge output unit, which comprises two electrically controlled switches connected in series to the converter unit with the respective control end respectively connected to a respective oscillation unit, and a voltage feedback unit, which is connected to the half-bridge output unit and the converter unit and comprises a second inductor, a third capacitor and a fourth capacitor that are connected in series.

Abstract: A supporting device for computer peripheral equipments, such as a Webcam, includes a base for holding the Webcam. The base has a housing compartment to hold a moving member. The housing compartment has two sides, each having a sliding member. The moving member has two sides pivotally coupled on the sliding members. The sliding members can be swiveled and moved back and forth, relative to the base, to adjust the clamping space and clamping angle between the base and the moving member at the same time. The supporting device may also rest and stand on an operation surface in an upright manner.

Abstract: A lighting module power-saving control method in which a switching control loop is installed in a lamp for outputting a high-frequency current output signal and a low-frequency current output signal, the length of a unit time is divided into multiple equal parts for enabling the power output loop of the lamp to alternatively output a normal-consumption current and a power-saving current to the lighting module of the lamp subject to the control of the switching control loop, and the frequency of the supply of the normal-consumption current is not less than 16 times/second.

Abstract: A supporting device for computer peripheral equipments, such as a Webcam, includes a base for holding the Webcam. The base has a housing compartment to hold a moving member. The housing compartment has two sides, each having a sliding member. The moving member has two sides pivotally coupled on the sliding members. The sliding members can be swiveled and moved back and forth, relative to the base, to adjust the clamping space and clamping angle between the base and the moving member at the same time. The supporting device may also rest and stand on an operation surface in an upright manner.

Abstract: A solar power generating apparatus has a transparent isolating layer made into a hollow cone having a smaller top and a larger bottom. The isolating layer has a hole at the top thereof and a space therein. A heat absorption layer is provided at an inner side of the isolating layer to absorb heat of the sunlight and to heat air in the space of the isolating layer. A rotary device is pivoted on the isolating layer at where adjacent to the hole. The heated air generates an upward airflow in the space of the isolating layer to drive the rotary device for rotation.

Abstract: A lamp is constructed to include a base adapted for connecting to an electric socket to obtain electricity, a shell fastened to the base and defining with the base an air-tight space, the shell having an inside wall coated with a layer of phosphorescent coating, an electronic ballast installed in the base and adapted to convert AC power supply into DC power supply, and at least one ultraviolet light emitting diode suspended in the air-tight space and connected to the electronic ballast and adapted to produce ultraviolet light to strike the phosphorescent coating in producing visible light upon connection of the base upon connection of the electronic ballast to power supply.