Abstract: A medium- and high-power frequency adjustable digital power system includes a switch switching circuit, an output sampling circuit, and a microcontroller. The switch switching circuit has a plurality of switches, receives an AC input power source and converts the AC input power source into an output power source. The output sampling circuit receives an output voltage and an output current of the output power source. The microcontroller receives the output voltage and the output current, and generates a plurality of control signals according to power information calculated by the output voltage and the output current to correspondingly control turning on and turning off the switches.

Abstract: An active power over Ethernet control apparatus with low power consumption includes a control unit and a low-power-consumption control circuit. The control unit is installed inside a power sourcing equipment. The low-power-consumption control circuit includes a detecting circuit, a handshaking circuit, and a self-holding circuit. The detecting circuit provides a first control signal. The handshaking circuit receives the first control signal and provides a second control signal. The self-holding circuit receives the second control signal. When a powered device is not connected to the power sourcing equipment, a power-supplying path from the power sourcing equipment to the powered device is disconnected. When the powered device is connected to the power sourcing equipment, the handshaking circuit is controlled by the first control signal and the self-holding circuit is controlled by the second control signal to make the power-supplying path be connected.

Abstract: A LED lamp includes housing, a circuit layer, at least one LED die, a light-transmitting adhesive, a lamp shade, a light-transmitting liquid and the conductive connector. One end of the housing has a protrusion. The circuit layer is placed on the protrusion. The LED die is placed on the protrusion and electrically connected to the circuit layer. The light-transmitting adhesive covers the circuit layer and the light emitting die. The lamp shade including a plurality of ventilating holes is connected to the housing, and an accommodating space is cooperatively defined by the lamp shade and the housing. The light-transmitting liquid is filled within the accommodating space, and the LED die is sunk therein.

Abstract: A power adapter having replaceable plugs includes a main body, a socket module, a conducting wire, a rotating casing and a household plug. The main body includes a wire containing groove, an automobile plug and a connecting base formed on both sides of the wire containing groove, and electric conducting terminals disposed at the connecting base. The socket module includes a fixing base connected to the connecting base and a socket contained inside the fixing base, and the socket is electrically connected to each electric conducting terminal. The conducting wire is electrically connected to an automobile plug and each electric conducting terminal, wound into a wire containing groove, and covered by a rotating casing. The rotating casing is rotated for winding the conducting wire, and a replaceable household plug is inserted into the socket, and the household plug is electrically connected to a circuit of the main body.

Abstract: A charger capable of converting either alternating current or direct current power source, with a cable storing mechanism, is disclosed. The device includes a main body to incorporate other components, an in-car connecting component which can be connected to the cigarette lighter of a car, a house connecting component which can be connected to the AC receptacle, and a cable storing device having a spiral structure to smoothly store the charging cable. Because the dual input charger is so compact that a consumer can carry easily the charger and to choose either the in-car connecting component or the house connecting component, depending on the conditions he faces with. When the charging is finished, a consumer can readily grasp and rotate the charger to sequentially wind the charging cable into the continuous spiral groove of the cable storing device.