Abstract: A dual-nuclear radio frequency (RF) coil device includes a first RF coil and a second RF coil. The first RF coil includes at least one adjustment capacitor, the first RF coil is configured to generate a first magnetic field, and a direction of a primary magnetic field of the first magnetic field is a first direction. The second RF coil includes an electric dipole and a tuning and matching circuit connected between two conductors of the electric dipole. The second RF coil is configured to generate a second magnetic field and a direction of a primary magnetic field of the second magnetic field is a second direction; the electric dipole is disposed in a center line of the first RF coil and an insulating layer is disposed between the electric dipole and the first RF coil; and the first direction is perpendicular to the second direction.

Abstract: A nanogrid and a virtual inverter controller for the nanogrid are disclosed. The nanogrid includes at least one parallel branch, and at least one branch is equipped with a protector. At least one of the protectors is equipped with one virtual inverter controller. The virtual inverter controller includes a sensor component configured to detect at least one characteristic parameter on the branch, and a control component affecting the electrical connection state of the corresponding protector of the virtual inverter controller according to the characteristic parameter.

Abstract: A method for establishing a short-range wireless connection between a designated hardware component and a computing device such that a user's waiting time for using the computing device to send commands to the hardware component is reduced; it has configuring a short-range wireless receiver of the computing device to listen for an identity sequence generated by the hardware component; receiving the identity sequence specific to the hardware component; and generating a connection sequence for establishing the short-range wireless connection between the computing device and the hardware component; wherein the wireless connection between the computing device and the hardware component is maintained when an application program for remotely controlling the hardware component is brought to the foreground upon receiving user input from a user.

Abstract: A dual-nuclear radio frequency (RF) coil device includes a first RF coil and a second RF coil. The first RF coil includes at least one adjustment capacitor, the first RF coil is configured to generate a first magnetic field, and a direction of a primary magnetic field of the first magnetic field is a first direction. The second RF coil includes an electric dipole and a tuning and matching circuit connected between two conductors of the electric dipole. The second RF coil is configured to generate a second magnetic field and a direction of a primary magnetic field of the second magnetic field is a second direction; the electric dipole is disposed in a center line of the first RF coil and an insulating layer is disposed between the electric dipole and the first RF coil; and the first direction is perpendicular to the second direction.

Abstract: A method for preparing field muskmelon oil includes the following steps: S1, removing foreign matter, including: removing the foreign matter in field muskmelon seeds; S2, low-temperature pressing, including: performing the low-temperature pressing on the field muskmelon seeds after removing the foreign matter in step S1 to obtain an oil residue mixture; S3, filtering and removing impurities: filtering the oil residue mixture obtained by the low-temperature pressing in step S2 to remove the impurities to obtain a primary oil; and S4, centrifugal separation, including: centrifugally separating the primary oil obtained by filtering and removing impurities in step S3 to obtain the field muskmelon oil. The new method avoids using high-temperatures resulting in optimal yield of nutritional content and no harmful byproducts.

Abstract: In an embodiment, a class-D amplifier includes an input terminal configured to receive an input signal; a comparator having an input coupled to the input terminal; a deglitching circuit having an input coupled to an output of the comparator; and a driving circuit having an input coupled to an output of the deglitching circuit. The deglitching circuit includes a logic circuit coupled between the input of the deglitching circuit and the output of the deglitching circuit. The logic circuit is configured to receive a clock signal having the same frequency as the switching frequency of the class-D amplifier.

Abstract: In an embodiment, a class-AB amplifier includes: an output stage that includes a pair of half-bridges configured to be coupled to a load; and a current sensing circuit coupled to a first half-bridge of the pair of half-bridges. The current sensing circuit includes a resistive element and is configured to sense a load current flowing through the load by: mirroring a current flowing through a first transistor of the first half-bridge to generate a mirrored current, flowing the mirrored current through the resistive element, and sensing the load current based on a voltage of the resistive element.

Abstract: A combined hydrogenation process method for producing high-quality fuel by medium-low-temperature coal tar, wherein a medium-low-temperature coal tar is fractionated to obtain a final product through a thermal hydrocracking unit, a first atmospheric fractionation unit, a hydro-refining, unit, a vacuum fractionation unit, a diesel and wax oil hydro-upgrading unit, a wax oil hydro-cracking unit, a gasoline and diesel precious metal hydrogenation unit and a fourth atmospheric fractionation unit. The present invention can effectively improve the quality of naphtha, aviation kerosene and diesel products, and produce high-end products with high yield and high value, and thus it has a great prospect of promotion and application.

Abstract: A vehicle camera peripheral. It has a frame having a surface for supporting a license plate, at least one compartment for containing a battery and a circuit board having a wireless transmitter and video transmission circuitry, the compartment provided in the frame and positioned behind the license plate supporting surface, a camera mounted to the frame and connected to the circuit board, and a mounting for connecting the frame to existing license plate fastening devices of a vehicle.

Abstract: An audio amplifier includes: a buck controller configured to control an output voltage at a first supply terminal, the output voltage selected from a set including a plurality of output voltages, where the output voltage takes a settling time to settle; a first audio bridge including: a class-AB driver stage coupled to the first supply terminal, and a delay insertion circuit configured to receive a processed digital stream and provide the processed digital stream to the class-AB driver stage a delay time after receiving the processed digital stream, where the delay time is based on the settling time; and an audio amplitude detector configured to detect a first peak amplitude in the first digital audio stream, where the buck controller is configured to select a lowest output voltage from the set that is higher than the first peak amplitude plus a headroom voltage.

Abstract: A command relay device provides remote assistance or remote use of a computer. It has a data interface for receiving commands directly or indirectly from a remote user, a keyboard interface for transmitting at least one keyboard command to the computer and a command link between the keyboard interface and the data interface.

Abstract: A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals. The outputs the power units are coupled to input terminals of integrators via a resistor feedback network. An analog output unit converts the pulse signals to an output analog signal. The differential integration circuitry implements a soft transition between mute/un-mute. In mute, the integrator output is fixed. During the soft transition, the PWM outputs change slowly from a fixed 50% duty cycle to a final value to ensure that no pop noise is present in the output as a result of mode change.

Abstract: A combined hydrogenation process method for producing high-quality fuel by medium-low-temperature coal tar, wherein a medium-low-temperature coal tar is fractionated to obtain a final product through a thermal hydrocracking unit, a first atmospheric fractionation unit, a hydro-refining, unit, a vacuum fractionation unit, a diesel and wax oil hydro-upgrading unit, a wax oil hydro-cracking unit, a gasoline and diesel precious metal hydrogenation unit and a fourth atmospheric fractionation unit. The present invention can effectively improve the quality of naphtha, aviation kerosene and diesel products, and produce high-end products with high yield and high value, and thus it has a great prospect of promotion and application.

Abstract: A vehicle camera peripheral. It has a frame having a surface for supporting a license plate, at least one compartment for containing a battery and a circuit board having a wireless transmitter and video transmission circuitry, the compartment provided in the frame and positioned behind the license plate supporting surface, a camera mounted to the frame and connected to the circuit board, and a mounting for connecting the frame to existing license plate fastening devices of a vehicle.

Abstract: A vehicle camera peripheral. It has a frame having a surface for supporting a license plate, at least one compartment for containing a battery and a circuit board having a wireless transmitter and video transmission circuitry, the compartment provided in the frame and positioned behind the license plate supporting surface, a camera mounted to the frame and connected to the circuit board, and a mounting for connecting the frame to existing license plate fastening devices of a vehicle.

Abstract: The present invention provides a microgrid system. The microgrid system includes a microgrid bus, electrically connected to an external grid; microgrid branches, electrically connected to the microgrid bus; nanogrids, electrically connected to the microgrid branches; and microgrid protection devices, each of the microgrid protection devices including at least one of a protection device connected between the microgrid bus and the external grid, protection devices connected between the microgrid branches and the microgrid bus and protection devices connected between nanogrids and microgrid branches, each of the microgrid protection devices being configured to break at least one of an electrical connection between the microgrid bus and the external grid, electrical connections between the microgrid branches and the microgrid bus and an electrical connections between the nanogrids and the microgrid branches upon at least one of the external grid, the microgrid bus and the microgrid branches malfunctioning.

Abstract: An activation device controls a computing device. It has a user input interface, a keyboard interface for connecting to the computing device, a memory for storing at least one sequence of keyboard commands, and a controller configured to store in memory the sequence of keyboard commands and to be responsive to the user input interface for transmitting the sequence of keyboard commands stored in memory to the computing device.

Abstract: A current transformer and a direct current source based on a current transformer are disclosed. In an embodiment, the current transformer includes two output ends; a first winding and a second winding connected in series between the two output ends; a main core; a bypass core, arranged to be magnetically coupled with the main core. The first winding is wound on a part of the main core and a part of the bypass core, and the second winding is wound on apart of the bypass core. In an embodiment, the current transformer also includes a high-frequency bypass, connected in parallel with the first winding, and used to filter a high-frequency signal. The high-frequency bypass provides a low-impedance path for a high-frequency signal in a primary conductor under measurement, such that the bypass core with the second winding presents less obstruction to the main core, thereby reducing heating.

Abstract: A method for determining abnormal equipment in semiconductor manufacturing system includes processing wafers. A measurement data relating to wafers at respective processing steps and at each tool stack run count for respective tools is provided. The method also includes performing statistical and correlation analysis on the production history data and the measurement data to determine multiple parameters including bad ratio (Rb) and good ratio (Rg) for each tool. A first bad-to-good probability ratio (R1) for each tool is obtained by dividing Rb by Rg at the tool stack run count. A second bad-to-good probability ratio (R2) of each tool is an overall probability ratio of Rb to Rg of each tool. A first correlation coefficient (C1) is provided for the measurement data corresponding to the tool stack run count. A second correlation coefficient (C2) is provided for the first bad-to-good probability ratio (R1) corresponding to the tool stack run count.

Abstract: A class D amplifier receives and amplifies a differential analog signal which is then differentially integrated. Two pulse width modulators generate pulse signals corresponding to the differentially integrated analog signal and two power units generate output pulse signals. The outputs the power units are coupled to input terminals of integrators via a resistor feedback network. An analog output unit converts the pulse signals to an output analog signal. The differential integration circuitry implements a soft transition between mute/un-mute. In mute, the integrator output is fixed. During the soft transition, the PWM outputs change slowly from a fixed 50% duty cycle to a final value to ensure that no pop noise is present in the output as a result of mode change.