Abstract: Structures with doping free connections and methods of fabrication are provided. An exemplary structure includes a substrate; a first region of a first conductivity type formed in the substrate; an overlying layer located over the substrate; a well region of a second conductivity type formed in the overlying layer; a conductive plug laterally adjacent to the well region and extending through the overlying layer to electrically contact with the first region; and a passivation layer located between the conductive plug and the well region.

Abstract: A flyback power converter includes a power transformer, a first lossless voltage conversion circuit, a first low-dropout linear regulator and a secondary side power supply circuit. The first low-dropout linear regulator (LDO) generates a first operation voltage as power supply for being supplied to a sub-operation circuit. The secondary side power supply circuit includes a second lossless voltage conversion circuit and a second LDO. The second LDO generates a second operation voltage. The first operation voltage and the second operation voltage are shunted to a common node. When a first lossless conversion voltage is greater than a first threshold voltage, the second LDO is enabled to generate the second operation voltage to replace the first operation voltage as power supply supplied to the sub-operation circuit; wherein the second lossless conversion voltage is lower than the first lossless switching voltage.

Abstract: This invention discloses a vein detection device, comprising a base, a transmitter, a detection arm and at least one receiver. The emitter is an infrared emitter which comprises a fisheye lens. An exposure portion close to the fisheye lens of the transmitter is exposed by an infrared light, thus the infrared light transforms into an infrared image which is received by the at least one receiver. A vein image is displayed on a screen which is configured on the base.

Abstract: A full bridge converter having a wide output voltage range includes an input power source, a full bridge switching circuit, a transformer, a first rectifying circuit, a second rectifying circuit, a first output circuit, a second output circuit, and a control circuit. The transformer includes a magnetic core, a primary side winding, a first secondary side winding, and a second secondary side winding. The first rectifying circuit includes a first AC switch, a second AC switch and a first freewheeling diode, and the second rectifying circuit includes a third AC switch, a fourth AC switch and a second freewheeling diode. The control circuit, according to a duty cycle, controls the first AC switch and the third AC switch to be turned on during a positive half cycle, and controls the second AC switch and the fourth AC switch to be turned on during a negative half cycle.

Abstract: A full bridge converter having a wide output voltage range includes an input power source, a full bridge switching circuit, a transformer, a first rectifying circuit, a second rectifying circuit, a first output circuit, a second output circuit, and a control circuit. The transformer includes a magnetic core, a primary side winding, a first secondary side winding, and a second secondary side winding. The first rectifying circuit includes a first AC switch, a second AC switch and a first freewheeling diode, and the second rectifying circuit includes a third AC switch, a fourth AC switch and a second freewheeling diode. The control circuit, according to a duty cycle, controls the first AC switch and the third AC switch to be turned on during a positive half cycle, and controls the second AC switch and the fourth AC switch to be turned on during a negative half cycle.

Abstract: This invention discloses a vein detection device, comprising a base, a transmitter, a detection arm and at least one receiver. The emitter is an infrared emitter which comprises a fisheye lens. An exposure portion close to the fisheye lens of the transmitter is exposed by an infrared light, thus the infrared light transforms into an infrared image which is received by the at least one receiver. A vein image is displayed on a screen which is configured on the base.

Abstract: A cassette for a bicycle may include a plurality of sprocket portions fused into a single unit. The cassette may include a cavity formed in the large end of the cassette. Spokes of an associated wheel may be at least partially disposed in the cavity. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion by fusing at least one of the connector portions to the second sprocket portion.

Abstract: A slicing device suitable for slicing a workpiece is provided. The slicing device includes at least two rollers and a wire. A slicing passage for the workpiece to pass through is formed between the two rollers. The two rollers are winded by the wire to form a plurality of rings disposed in intervals parallel to each other. When the two rollers rotate to move the rings, the workpiece enters the slicing passage and presses on a portion of the rings spanning the two rollers so that the workpiece is sliced. Each roller has a circular cross-section, and the diameter of the circular cross-section varies along the length direction of each roller, so as to adjust the sizes of the rings.

Abstract: A transformer primary side of a transformer starts storing energy when a first switch unit is turned on. A transformer secondary side auxiliary winding of the transformer generates a secondary side voltage. A voltage of a second input side of a comparison unit is higher than a voltage of a first input side of the comparison unit. The comparison unit is configured to turn off a second switch unit. The voltage of the second input side is lower than the voltage of the first input side when the first switch unit is turned off. The comparison unit is configured to turn on the second switch unit. A transformer secondary side of the transformer sends a secondary side current to a load apparatus through the second switch unit.

Abstract: A high-definition multimedia interface (HDMI) data transceiving apparatus is disclosed. The HDMI data transceiving apparatus includes a data receiver and a data transmitter. The data transmitter includes a first impedance-providing device and a second impedance-providing device. The data transmitter has a first data transmission terminal and a second data transmission terminal. The first data transmission terminal and the second data transmission terminal are coupled to the data receiver through a first transmission line and a second transmission line, respectively. The data transmitter respectively transmits first data and second data to the data receiver. The first impedance-providing device and the second impedance-providing device absorb a reflected wave generated by the HDMI data transceiving apparatus when the first data and the second data are transmitted.

Abstract: An energy-saving power converter includes a first switch unit, a transformer primary side, a transformer secondary side, a diode subunit, a switch subunit, a comparison unit, a current sensor, and a resistor. The transformer primary side starts storing energy when the first switch unit is turned on. The transformer secondary side sends a secondary side current to the current sensor through the diode subunit when the first switch unit is turned off. The current sensor informs the comparison unit and the resistor when the current sensor senses the secondary side current. The resistor is used to transform the secondary side current into voltage form for entering the comparison unit. The comparison unit is configured to turn on the switch subunit, so that the secondary side current is passing through the switch subunit.

Abstract: A receiver includes a CDR circuit, serial-to-parallel converter, and test module. The CDR circuit is for receiving the test signal groups inputted in series and following transmitting frequency of the test signal groups to obtain a clock signal, wherein the clock signal is used to provide an operational frequency of the receiver. The serial-to-parallel converter is for receiving the test signal groups outputted by the CDR circuit and converting the serially-inputted test signal groups into a plurality of test bytes outputted in parallel, wherein each of the test bytes has multi-bit of data. The test module is for receiving the test bytes and the clock signal and comparing two adjacent bytes of the test bytes to determine whether the two adjacent test bytes are completely the same.

Abstract: A receiver includes a CDR circuit, serial-to-parallel converter, and test module. The CDR circuit is for receiving the test signal groups inputted in series and following transmitting frequency of the test signal groups to obtain a clock signal, wherein the clock signal is used to provide an operational frequency of the receiver. The serial-to-parallel converter is for receiving the test signal groups outputted by the CDR circuit and converting the serially-inputted test signal groups into a plurality of test bytes outputted in parallel, wherein each of the test bytes has multi-bit of data. The test module is for receiving the test bytes and the clock signal and comparing two adjacent bytes of the test bytes to determine whether the two adjacent test bytes are completely the same.

Abstract: A high-definition multimedia interface (HDMI) data transceiving apparatus is disclosed. The HDMI data transceiving apparatus includes a data receiver and a data transmitter. The data transmitter includes a first impedance-providing device and a second impedance-providing device. The data transmitter has a first data transmission terminal and a second data transmission terminal. The first data transmission terminal and the second data transmission terminal are coupled to the data receiver through a first transmission line and a second transmission line, respectively. The data transmitter respectively transmits first data and second data to the data receiver. The first impedance-providing device and the second impedance-providing device absorb a reflected wave generated by the HDMI data transceiving apparatus when the first data and the second data are transmitted.

Abstract: A receiver includes a CDR circuit, serial-to-parallel converter, and test module. The CDR circuit is for receiving the test signal groups inputted in series and following transmitting frequency of the test signal groups to obtain a clock signal, wherein the clock signal is used to provide an operational frequency of the receiver. The serial-to-parallel converter is for receiving the test signal groups outputted by the CDR circuit and converting the serially-inputted test signal groups into a plurality of test bytes outputted in parallel, wherein each of the test bytes has multi-bit of data. The test module is for receiving the test bytes and the clock signal and comparing two adjacent bytes of the test bytes to determine whether the two adjacent test bytes are completely the same.