Delta Electronics (shanghai) Co., Ltd

Opple Lighting Co., Ltd.

Suzhou Opple Lighting Co., Ltd.

Agios Pharmaceuticals, Inc.

Transcom (shanghai) Technology Co., Ltd.

Shanghai Yike Green Engineering Co., Ltd.

Xiaolei Wang

Peng Fei Zhu

Hao Sun

Haixin Wu

Jianpeng Lin

Robert Zahler

Janeta Popovici-Muller

Zhixiong Ye

Giovanni Cianchetta

Sheldon Cao

Shuang Chen

Shengyu Qiao

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. With the circuit structure and method of the present invention for realizing real-time pre-distortion calibration of broadband IQ modulation, the calibration process is completed locally in real time, solving the problem of frequency response error correction caused by hardware circuit performance change, so that automatic pre-distortion calibration of frequency response can be completed on site in real time.

Circuit structure for realizing real-time predistortion calibration of broadband IQ modulation and method thereof

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.

Voltage spike measurement circuit and method

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.

Startup control method and system

The application provides a current detecting circuit, including a current transformer having a primary winding for receiving a current to be detected and a secondary winding for generating a sampling current; a demagnetizing circuit for demagnetizing the current transformer; a chip selection circuit electrically connected to the demagnetizing circuit, and operably switched between a first mode and a second mode; a sampling circuit electrically connected to the chip selection circuit to sample the sampling current, and outputting a sampling signal to a controller; and a clamping circuit electrically connected between the sampling circuit and the controller, and configured for providing a reference potential. The application further provides a converter including the current detecting circuit.

Current detecting circuit, current detecting method and converter

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: determining a duty cycle or a frequency of a driving signal based on at least a voltage spike reference value and a voltage spike measurement value of a power switch at the low-voltage side; and outputting the driving signal to the power switch, thereby controlling the on and off of the power switch. 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.

Startup control method and system, and voltage spike measurement circuit and method

The present disclosure discloses a lighting device and a lamp apparatus. The lighting device includes a light source supply assembly and a curved light guide element. The light source supply assembly includes a fixing base and a light source module. The fixing base has two opposite first accommodating areas, and the light source module is disposed in at least one of the two first accommodating areas, two ends of the curved light guide element are inserted into the two first accommodating areas, and one end of the curved light guide element corresponding to the light source module has a light source introduction bump, the light source introduction bump has a light incident surface corresponding to the light source module, the light source module supplies a light source, the light source enters from the light incident surface and propagates along the curved light guide element.

Lighting device and lamp apparatus

The present disclosure provides an illumination module and an illumination device. The illumination module includes a bottom case, a shield buckled coupled with the bottom case to form an accommodation cavity, a lens and a polygonal substrate provided with a light source which are arranged in the accommodation cavity, the lens being configured to distribute light beams emitted from the light source, where the bottom case has a plurality of side walls, an outer side of each of the plurality of side walls is mounted with a first magnetic component, and the first magnetic component is configured to connect two illumination modules by attraction; each side of the polygonal substrate is provided with an electrical connection interface; and upon the electrical connection interface of the illumination module being plugged into an electrical connection interface of another illumination module, an electrical connection between the two illumination modules is realized.

Illumination module and illumination device

The present disclosure discloses a mounting assembly for an optical element of a lighting lamp, including a base, a top frame and at least two side frames, one end of each of the at least two side frames is connected to the base and the other end is connected to the top frame; the at least two side frames, the base and the top frame enclose a mounting space for fixing the optical element, and the at least two side frames are configured to be distributed around the optical element and are configured to be connected to a side edge of the optical element. The present disclosure further discloses a light source module and a lighting lamp.

Mounting assembly and light source module for optical component of lighting fixture, and lighting fixture

An asphalt damping sheet, which comprises the following components in indicated amounts based on the total mass of the asphalt damping sheet: a paint slag-containing waste limestone powder 20-50 parts; soft pitch 1-5 parts; hard pitch 11-15 parts; a non-metallic mineral 29-59 parts; PET short fiber 0.1-1.5 parts; and said non-metallic mineral is selected from the group consisting of quartz sand, pottery clay and mica powder. The technical process in the invention uses the paint slag-containing waste limestone powder generated in dry separation process of overspray adopted by vehicle manufacturer paint shops as filler in the asphalt damping sheets, such asphalt damping sheets can be used in the field of machine manufacturing such as automobiles and ships, and also can be used in the field of building waterproof materials, and the goal of resource recycling is achieved.

Resource utilization of paint slag-containing waste limestone powder and treatment process thereof

Compounds of general formula I: and compositions comprising compounds of general formula I that modulate pyruvate kinase are described herein. Also described herein are methods of using the compounds that modulate pyruvate kinase in the treatment of diseases.

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Shanghai, China

Xiaolei Wang