Abstract: A bridgeless PFC power converter comprises a first inductor and a second inductor coupled from a first input-terminal and a second input-terminal to a first transistor and a second transistor. A first diode and a second diode are coupled from the first transistor and the second transistor to an output capacitor. A first capacitor and a second capacitor are coupled from the input-terminals to the ground terminal through a third transistor and a fourth transistor. A control circuit generates a first-switching signal and a second-switching signal to control the first transistor and the second transistor. The second-switching signal will turn on the second transistor when the first-switching signal switches the first transistor. The first-switching signal will turn on the first transistor when the second-switching signal switches the second transistor. The control circuit turns off the third transistor and the fourth transistor during the light-load of the PFC power converter.

Abstract: The invention discloses an analytical strip reading apparatus and the analytical strip used therein. The analytical strip reading apparatus comprises a housing, a monitor, a delivering device, an optical reader, a reaction signal reader and a control module. The analytical strip comprises at least one optically readable pattern which comprises identification information of the analytical strip.

Abstract: The present invention discloses a temperature sensing circuit which is adaptive toward low voltage IC environment, it mainly comprises: a temperature sensing unit, a temperature threshold control unit and a transconductance amplifier. The temperature sensing unit includes a bipolar transistor and PMOS transistors, and senses temperature via detecting voltage. The temperature threshold control unit includes PMOS transistors and NMOS transistors, and makes an over-temperature alert signal persistently sent out until temperature is lowered to a specified value when the temperature sensing unit detects an over-temperature state. The transconductance amplifier includes PMOS transistors and NMOS transistors, and makes the temperature sensing circuit of the present invention adapt to a low voltage IC environment. Further, the circuit architecture of the present invention does not require any use of operational amplifier or band-gap voltage reference source.

Abstract: A wafer container including a container body having an opening formed on one sidewall and a door joining with the opening, the characteristic of the wafer container in that: A latch component disposed in a platform of the door comprising an oval cam with an arrester disposed at its center, one surface of the oval cam being disposed with at least a groove, a pair of moving bars respectively having an engaging portion that is engaged in the groove for the pair of moving bars to be engaged with the oval cam, a guiding element disposed at the center of the oval cam, and a long narrow spring framingly disposed on the guiding element, wherein the arrester is used to control the rotation of the oval cam for the moving bars to go to and fro between the pair of socket holes and the pair of latch holes.

Abstract: A lamp overload detection/modulation circuit including a microcontroller unit for detecting rectangular wave signal reflective of the power used by the lamp load and pulse width signal of AC power. The positive bandwidths of the two signals are compared with a predetermined full-load value. In the case that the positive bandwidths of the two signals are both larger than the full-load value, it is indicated that the lamp load is under an overload condition. Under such circumstance, the microcontroller unit controls a lamp load driving unit to change driving manner and lower the power used by the lamp load to a value within a nominal range. Then the lamp load automatically restores to the full-load state. Accordingly, the lamp is protected from long-term overload condition.

Abstract: A die-stacked package structure, wherein a plurality of dies are stacked on the substrate with a rotation so that a plurality of metallic ends and the metal pad on each die on the substrate can all be exposed; a plurality of metal wires are provided for electrically connecting the plurality of metal pads on the plurality of dies with the plurality metallic ends on the substrate in one wire bonding process; then an encapsulate is provided for covering the plurality of stacked dies, a plurality of metal wires and the plurality of metallic ends on the substrate.

Abstract: The present invention discloses a metal oxide semiconductor (MOS) device and a method for operating an array structure comprising the same devices. The MOS device of the present invention comprises a device layer; an ion-implanted layer formed on the device layer and providing the source, the drain and the channel; and a gate structure formed on the ion-implanted layer. Via applying a bias voltage to the gate, the carrier density in the channel region is different from that in the source region or the drain region; thereby, the MOS device of the present invention can undertake programming, erasing and reading activities. The present invention can simplify the MOS device fabrication process, reduce the operating voltage, and promote the integration density of a 2-dimensional or 3-dimensional MOS device array.

Abstract: The present invention discloses a frequency-hopping carrier generator, which comprises a current source, a ramp generator and a switch power amplifier. The current source generates a first current; the first current is output to the ramp generator. The output of the ramp generator is coupled to a capacitor to generate a ramp voltage. The ramp voltage is connected to a voltage detection/direction control device and a PWM module. The PWM module receives an audio input signal and generates a PWM signal. When receiving a ramp voltage, the voltage detection/direction control device outputs a control signal to the ramp generator and a counter. The counter is coupled to a digital-control current source. According to the value of the counter, the digital-control current source outputs a second current to the ramp generator. The second current is merged with the first current. The merged current is used to charge/discharge the capacitor.

Abstract: The present invention discloses a voltage detection type overcurrent protection device, which applies to the output stage of a CMOS Class-D audio amplifier. Generally, a Class-D audio amplifier is used to drive a high-load loudspeaker; therefore, it needs a high-current driver. When there is a short circuit in the load, the high current will burn out the driver stage. The present invention detects the output voltage to indirectly monitor whether the output current is too large. Once an overcurrent is detected, the output-stage transistor is turned off to stop high current lest the circuit be burned out.

Abstract: The present invention provides a gas filling apparatus and gas filling port thereof. The gas filling apparatus is connected with the air feed apparatus which is introduced the gas into the first inlet port of the semiconductor device or reticle storage apparatus. The gas filling apparatus includes a supporting base which is provided to hold the storage apparatus thereon, and at least one second inlet port which is disposed on the first inlet port of the storage apparatus so as to the gas is flowed into the storage apparatus through the second inlet port. The second inlet port includes a first base, a second base, a first elastic element, a fixing element, and a switch device. Both of the first base and second base have through holes, and opposite to each other. The first elastic element is used to maintain the airtight and is disposed on the second base and opposite to the first inlet port of the storage apparatus used to maintain the airtight.

Abstract: The present invention discloses an electric device with a rotatable and receivable plug. The electric device includes an upper case and a lower case. The lower case has two through holes, two plug receiving slots and two receptacles formed therein, and is engaged with the upper case. The electric device further includes a plug having a first end and a second end. The first end is inserted into the through holes of the lower case. Moreover, the first end of the plug is received in the plug receiving slots of the lower case and the second end of the plug is received in the receptacles of the lower case when the plug is rotated to a hidden position. The electric device further includes a fixing member having two slots formed therein to be inserted by the second end of the plug and two clamping fixtures formed on the lower surface thereof to clamp the plug, and a circuit board attached onto the lower case.

Abstract: A double-sided adhesive tape dispenser includes a main housing composed of a fitting casing and a fitting cover, which have the upper corresponding sides mutually assembled with a pivotal member. The fitting casing has its inside disposed with an insert recess, two engage pins and a tape-winding mechanism. The fitting cover has its inside fixed with an engage member, plural projecting rings and an engage projection. The tape-winding mechanism consists of a pair of winding wheels and a guide-press member, and one winding wheel has its outer end installed with a tape reel. The guide-press member is pivotally provided with a press roller and an actuating wheel having its surface annularly disposed with several flanges. By so designing, the fitting cover can easily be opened for replacing the tape reel, and the double-sided adhesive tape dispenser can be easily and smoothly dragged for use.