Abstract: A portable cosmetic container is disclosed. The portable cosmetic container includes a tube that has a receiving space with an opening at one end, and a crease is located at a bottom portion of the receiving space, so that a user can easily break the tube from the crease to form the opening of the receiving space. Substance is partially filled in the receiving space, and air therein is extracted to form a negative pressure status. It is advantageous that when a user breaks the tube from the crease, the substance will not randomly spray out since the air pressure moves towards the opening to keep the substance in the receiving space.

Abstract: A LED driving device adapted to driving N LED strings connected in series is provided. N is a positive integer greater than 1. The LED driving device includes (N?1) switch units, a current source, a detection unit and a control unit. The ith switch unit electrically connects to the (i+1) LED string in parallel or to the ith LED string in parallel, and 0<i?(N?1). The current source supplies a driving current to drive the N LED strings. The detection unit outputs a detection signal according to a voltage of the current source, a first reference voltage and a second reference voltage. The control unit outputs a plurality of first control signals according to the detection signal to dynamically control an amount of the (N?1) switch units turned on.

Abstract: A light-emitting diode (LED) driving circuit includes a power factor correction (PFC) circuit and a driving controller. The PFC circuit controls a power factor of the LED driving circuit. The LED driving circuit includes an inductor, a switch, a current detection circuit, and a time detection circuit. The inductor senses an inductor current and provide energy to at least one LED. The switch connected to the inductor is conducted according to a driving signal. The current detection circuit connected to the switch detects inductor current information. The time detection circuit connected to the switch detects an energy discharging time during which the inductor current decrease from a peak value to zero. The driving controller connected to the switch, the current detection circuit, and the time detection circuit outputs the driving signal to the switch according to the voltage level and the energy discharging time.

Abstract: A LED driving device adapted to driving N LED strings connected in series is provided. N is a positive integer greater than 1. The LED driving device includes (N?1) switch units, a current source, a detection unit and a control unit. The ith switch unit electrically connects to the (i+1) LED string in parallel or to the ith LED string in parallel, and 0<i?(N?1). The current source supplies a driving current to drive the N LED strings. The detection unit outputs a detection signal according to a voltage of the current source, a first reference voltage and a second reference voltage. The control unit outputs a plurality of first control signals according to the detection signal to dynamically control an amount of the (N?1) switch units turned on.

Abstract: A light-emitting diode (LED) driving circuit includes a power factor correction (PFC) circuit and a driving controller. The PFC circuit controls a power factor of the LED driving circuit. The LED driving circuit includes an inductor, a switch, a current detection circuit, and a time detection circuit. The inductor senses an inductor current and provide energy to at least one LED. The switch connected to the inductor is conducted according to a driving signal. The current detection circuit connected to the switch detects inductor current information. The time detection circuit connected to the switch detects an energy discharging time during which the inductor current decrease from a peak value to zero. The driving controller connected to the switch, the current detection circuit, and the time detection circuit outputs the driving signal to the switch according to the voltage level and the energy discharging time.

Abstract: A portable cosmetic container is disclosed. The portable cosmetic container includes a tube that has a receiving space with an opening at one end, and a crease is located at a bottom portion of the receiving space, so that a user can easily break the tube from the crease to form the opening of the receiving space. Substance is partially filled in the receiving space, and air therein is extracted to form a negative pressure status. It is advantageous that when a user breaks the tube from the crease, the substance will not randomly spray out since the air pressure moves towards the opening to keep the substance in the receiving space.

Abstract: A fixed frequency dimming method and fixed frequency dimming circuit for a light emitting module can control light emitting brightness of the light emitting module through a hysteresis control circuit. A voltage difference between an upper limit voltage and a lower limit voltage of a hysteresis width of the hysteresis control circuit is maintained at a fixed value, and a driving current flowing through the light emitting module is changed by changing the upper limit voltage or the lower limit voltage.

Abstract: A light-emitting diode driving circuit includes an AC/DC converting circuit for converting an AC power source into a DC power source; a switching element having an input contact connected to the AC/DC converting circuit; a control unit for outputting a control signal to the switching element at a set frequency to turn on or turn off the switching element, wherein a first resistor is disposed between a power contact thereof and the input contact of the switching element; a second resistor for enabling the control unit to detect a half-cycle voltage of the DC power source; a capacitor having a first end connected to the power contact, and a second end connected to a ground contact of the control unit; and an inductor having a first end connected to the ground contact and the second end of the capacitor, and a second end connected to a light-emitting diode.

Abstract: A fixed frequency dimming method and fixed frequency dimming circuit for a light emitting module can control light emitting brightness of the light emitting module through a hysteresis control circuit. A voltage difference between an upper limit voltage and a lower limit voltage of a hysteresis width of the hysteresis control circuit is maintained at a fixed value, and a driving current flowing through the light emitting module is changed by changing the upper limit voltage or the lower limit voltage.

Abstract: A light-emitting diode driving circuit includes an AC/DC converting circuit for converting an AC power source into a DC power source; a switching element having an input contact connected to the AC/DC converting circuit; a control unit for outputting a control signal to the switching element at a set frequency to turn on or turn off the switching element, wherein a first resistor is disposed between a power contact thereof and the input contact of the switching element; a second resistor for enabling the control unit to detect a half-cycle voltage of the DC power source; a capacitor having a first end connected to the power contact, and a second end connected to a ground contact of the control unit; and an inductor having a first end connected to the ground contact and the second end of the capacitor, and a second end connected to a light-emitting diode.

Abstract: A workpiece feeder adapted to feed workpieces to the processing main shaft of a cutting metal-working machine individually is disclosed to include a frame base adapted to carry individual workpieces, a conveyer, two striking blocks fixedly fastened to the conveyer, a power drive controlled by a control box to move workpieces to the feeding position one after another and to rotate the conveyer, causing the striking blocks to force individual workpieces to the processing main shaft of the cutting metal-working machine one after another through a workpiece guide.

Abstract: A workpiece feeder adapted to feed workpieces to the processing main shaft of a cutting metal-working machine individually is disclosed to include a frame base adapted to carry individual workpieces, a conveyer, two striking blocks fixedly fastened to the conveyer, a power drive controlled by a control box to move workpieces to the feeding position one after another and to rotate the conveyer, causing the striking blocks to force individual workpieces to the processing main shaft of the cutting metal-working machine one after another through a workpiece guide.

Abstract: A fully automatic cutting metal-working machine is disclosed to include cutting metal-working main unit controlled to process a metal rod material into finished products, and a material feed unit adapted to feed a metal rod material to the cutting metal-working main unit for processing, the material feed unit having a feed pipe for feeding the provided metal rod material, a pipe carrier carrying the feed pipe, a power unit controlled to drive the pipe carrier to move the feed pipe forwards/backwards between an extended position and a received position, and a holding down mechanism installed in the distal end of the feed pipe and controlled to hold down the inserted metal rod material for cutting.

Abstract: A fully automatic cutting metal-working machine, which includes a material feed unit, a cutting metal-working main unit controlled to process metal rod material delivered from the material feed unit into finished products, and a waste material conveyer controlled to collect and carry waste material out of the cutting metal-working main unit, wherein the cutting metal-working main unit includes a machine base, a casing mounted on the machine base, a material cut-off shaft assembly controlled to cut metal rod material from the material feed unit into individual workpieces, a plurality of processing shaft assemblies mounted around the casing, a rotary center fixture holder mounted within the casing at the center and controlled to carry workpiece to each of the processing shaft assemblies in proper order to receive a respective processing procedure, and a steering shaft assembly controlled to reverse the position of workpiece at each fixture.