Abstract: A power switching circuit includes a driving signal part, a first switch element, a second switch element, a first driving circuit and a second driving circuit. The first driving circuit includes a first resistor and a first connection branch, which are connected between a positive driving signal terminal of the driving signal part and a first driving terminal of the first switch element, respectively. The second driving circuit includes a third resistor and a second connection branch, which are connected between the positive driving signal terminal and the second driving terminal of the second switch element, respectively. In a same switching cycle, the turn-on time of the first switch element is earlier than the turn-on time of the second switch element and the turn-off time of the first switch element is earlier than the turn-off time of the second switch element.

Abstract: A targeted protease degradation (TED) platform that can be a conjugate of target molecule-linker-E3 ligase ligand as shown in formula I, i.e., RT-L1-RE3, wherein RT is a monovalent group of the target molecule; RE3 is a monovalent group of the E3 ligase ligand; L1 is a linker linking A and B; and L1 is as shown in formula III below: —W1-L2-W2—(II).

Abstract: An electronic device includes a cover body, a telephone receiver, a loudspeaker, and a first cavity. The telephone receiver is accommodated in the first cavity. There is a gap between the cover body and the telephone receiver as well as between the cover body and the loudspeaker. The gap is communicated with the first cavity, and is communicated with the external environment through a sound hole of the loudspeaker.

Abstract: The present invention relates to four-membered fused cyclic compounds and preparation methods and uses thereof, and specifically relates to four-membered fused cyclic compounds, preparation methods thereof and pharmaceutical compositions containing a therapeutically effective amount of the compound, as well as uses thereof as tyrosine kinase inhibitors, especially in the preparation of drugs that inhibit the tyrosine kinase activity of a protein selected from the group consisting of ABL1 protein, ABL2-related proteins and chimeric protein BCR-ABL1.

Abstract: The present disclosure provides a pulse width modulation method, which is applied to a bridge circuit, comprising: configuring a first driving mode and a second driving mode of the pulse width modulation of the bridge circuit, wherein losses of the same switch of the bridge circuit in the first driving mode and the second driving mode are reversed; in a first time window, controlling the bridge circuit to operate in the first driving mode, wherein the first time window is M switching cycles, and M is a positive integer; and in a second time window, controlling the bridge circuit to operate in the second driving mode, wherein the second time window is N switching cycles, N is a positive integer, and the pulse width modulation process of the bridge circuit is divided into the first time window and the second time window that are alternated cyclically.

Abstract: The present disclosure provides an on-board charger. The on-board charger includes a housing, a connection channel, a circuit board assembly, and a plurality of electronic components. The housing includes an accommodation space. The accommodation space includes a heat dissipating area, the heat dissipating area includes an upper layer, a fluid channel layer, and a lower layer. A fluid channel is formed inside the fluid channel layer. The connection channel is in communication with the first fluid channel. The circuit board assembly includes an upper substrate and a lower substrate. A part of the upper substrate is disposed in the upper layer, and a part of the first lower substrate is disposed in the first lower layer. The plurality of electronic components are disposed corresponding to the circuit board assembly.

Abstract: The disclosure provides a method and a system for warming-up an electrolytic capacitor. The method comprises: providing a power factor correction circuit comprising an AC terminal, a DC terminal and the electrolytic capacitor, wherein the DC terminal is connected in parallel to the electrolytic capacitor; determining whether it is necessary to perform a warm-up operation on the electrolytic capacitor; when it is determined to be necessary, generating a ripple current on the electrolytic capacitor by controlling an input current to flow into the AC terminal of the power factor correction circuit; and when the warmed-up state of the power factor correction circuit that is generated based on the ripple current matches a specified warmed-up exit condition, terminating the warm-up operation performed on the electrolytic capacitor.

Abstract: The present disclosure provides a ceiling assembly and a fan lamp, the ceiling assembly is configured for an installation of a fan lamp, and including: a bracket body and a ceiling box, wherein the ceiling box has an installation cavity, and the bracket body is housed in the installation cavity, the ceiling box is provided with a first connecting part, the bracket body is provided with a second connecting part at a position corresponding to the first connecting part, the first connecting part is detachably connected with the second connecting part, and the first connecting part is provided with a first guiding part on a connecting surface thereof corresponding to the second connecting part.

Abstract: The present invention relates to a circuit structure for realizing real-time pre-distortion calibration of broadband IQ modulation, comprises a baseband generation module, for the calibration signal generator to generate two orthogonal sine cosine calibration signals respectively according to the calibration bandwidth and the order of the pre-distortion filter, and the data switch is switched to the relevant data channel; a digital-to-analog conversion module, for converting the signals into analog I and Q baseband signals; a frequency synthesis module, for generating signals in a certain frequency range; a IQ modulation module, for mixing the analog baseband signal with the local oscillator signal; an amplitude control module, for continuous adjustment of the RF signal power. The present invention also relates to a method for realizing real-time pre-distortion calibration processing of broadband IQ modulation.

Abstract: A magnetic component assembly is disclosed and includes a magnetic component, a plastic frame and an insulation tape. The magnetic component includes at least one adjacent side. The plastic frame includes an accommodation space, at least one window and at least one through opening. The magnetic component is accommodated in the accommodation space, the at least one window is spatially corresponding to the at least one adjacent side of the magnetic component, and the at least one through opening is in communication with the accommodation space. The insulation tape is attached to the plastic frame, covers the at least one window, and shields the at least one adjacent side of the magnetic component.

Abstract: A voltage spike measurement circuit for a power switch includes a rectifier unit, a capacitive divider unit and a discharge unit, the rectifier unit configured to receive a voltage signal at both ends of a power switch and output a rectified signal; the capacitive divider unit includes at least two capacitors connected in series and configured to receive the rectified signal, divide the rectified signal based on a capacitance ratio of the at least two capacitors, and output a divider signal to a digital signal processor to calculate a voltage spike measurement value of the power switch; and the discharge unit connected in parallel to the capacitive divider unit.

Abstract: Provided herein are GPX4 inhibitors, e.g., a compound of Formula (I), and pharmaceutical compositions thereof. Also provided herein are methods of their use for treating, preventing, or ameliorating one or more symptoms of a GPX4-mediated disorder, disease, or condition.

Abstract: A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: acquiring a voltage spike measurement value of a power switch at the low-voltage side; determining a duty cycle or a frequency of a driving signal according to the voltage spike measurement value and a preset voltage; and outputting the driving signal to a power switch at the high-voltage side, thereby charging a clamping capacitor of the power switch at the low-voltage side. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.

Abstract: Provided is a small molecule compound, which is characterized in having the structure represented by the following molecular formula: (I), wherein X1 and X2 are selected from carbon or nitrogen; G1 is a carbocyclic ring or heterocyclic ring having aromaticity; any one or more hydrogen atoms on the ring of G1 are substituted by R1; and R1 is selected from nitrogen-containing groups. The small molecule compound of the present invention can be used as a highly effective and specific JAK kinase inhibitor, specifically a Tyk2 inhibitor; and/or a JAK1 inhibitor, and/or a JAK1/Tyk2 or Tyk2/JAK1, Tyk2/Jak2 dual inhibitor.

Abstract: The present disclosure discloses a fan blade structure, a fan and a fan lamp, belonging to the field of household appliances. A fan blade structure includes: an inner edge located at a windward side, where the inner edge at least partially protrudes towards a leeward side, and the inner edge extends obliquely upwards, gradually, from one end of the fan blade structure close to a rotational axis to one end of the fan blade structure facing away from the rotational axis; an outer edge located at the leeward side, where the outer edge protrudes towards the leeward side, and the outer edge extends obliquely upwards from the end of the fan blade structure close to the rotational axis to the end of the fan blade structure facing away from the rotational axis; and a cambered surface connected between the inner edge and the outer edge.

Abstract: The present disclosure discloses a method and a system for controlling a switching power supply, the switching power supply comprising a power factor correction circuit which comprises at least one electrolytic capacitor, the method comprising: detecting a ripple voltage of the electrolytic capacitor; controlling an actual output power of the switching power supply to be equal to a reference output power based on the ripple voltage of the electrolytic capacitor, wherein the reference output power equals to a compensated output power or an upper limit output power, and wherein the compensated output power is obtained by comparing the ripple voltage of the electrolytic capacitor with a reference voltage and subjecting to a compensation calculation. The reference output power is a smaller one of the compensated output power and the upper limit output power.

Abstract: A three-stage tubular T-shaped degassing device with microbubble axial flow and spiral flow fields is provided, which is applied to quick degassing of a gas-liquid two-phase flow. The three-stage tubular T-shaped degassing device adopts a quick degassing technology combining a microbubble uniform mixed rotational axial flow field and a spiral runner conical spiral flow field with layered jet collision reversing depth degassing. A microbubble uniform mixer is configured to adjust gas-liquid two-phase flow containing big bubbles into microbubble uniform mixed axial flow. A microbubble cyclone is configured to adjust the microbubble uniform mixed axial flow into multiple strands of rotational axial flows containing microbubbles. A rotational axial flow degasser implements the horizontal type microbubble uniform mixed multiple strands rotational axial flow degassing operation to remove most microbubbles to form axial flow gas and axial flow liquid.

Abstract: The three-stage axial flow degassing device adopts an efficient degassing technology including a vertical high speed swirling field, a horizontal rapid axial flow field and a vertical reversing scrubbing field formed by a combination of vertical tubes; the first-stage degasser performs the first-stage segmental vertical high speed swirling degassing operation, removes the gas phase carried by the gas-containing fluid, and forms a primary gas and a primary fluid; the microporous uniform mixer breaks bubbles of the primary fluid and forms a gas-liquid uniform mixed flow; the second-stage degasser performs the second-stage horizontal vane wheel swirling generating rapid axial flow degassing operation, removes the gas phase carried by the gas-liquid uniform mixed flow, and forms a secondary gas and a secondary fluid; the third-stage degasser performs the third-stage vertical reversing deep degassing operation, removes liquid phase carried by the secondary gas, and forms a tertiary gas and a tertiary fluid.

Abstract: A method and device for controlling viscosity of asphalt rubber based on a current variation are provided. The method includes processing asphalt rubber raw materials with a first preset proportion, and shearing the processed asphalt rubber; obtaining a shearing current, pumping and discharging the sheared asphalt rubber; obtaining a discharging current, and obtaining the viscosity of the pumped asphalt rubber according to the discharging current and the viscosity-discharging current correlation relationship. The method includes comparing the viscosity with a preset viscosity; outputting the pumped asphalt rubber as finished asphalt rubber when the viscosity is equal to the preset viscosity. The method includes adjusting the viscosity according to the discharging current. Double-current control is adopted, so that the whole-process control of the processing viscosity of the asphalt rubber is realized, and the control accuracy of the viscosity is improved.

Abstract: A startup control method for a DC/DC converter is used for starting the DC/DC converter with energy transferred from a low-voltage side to a high-voltage side, and includes: acquiring a voltage spike measurement value of a power switch at the low-voltage side; determining a duty cycle or a frequency of a driving signal according to the voltage spike measurement value and a preset voltage; and outputting the driving signal to a power switch at the high-voltage side, thereby charging a clamping capacitor of the power switch at the low-voltage side. The startup control method for a DC/DC converter of the disclosure can improve a reverse charging power of the converter to the maximum extent and reduce the time needed for charging a bus capacitor during a reverse startup process while ensuring voltage stress on the power switch not to exceed a limit.