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400 results about "Power entry module" patented technology

A power entry module (PEM) is an electromechanical component used in electrical appliances, integrating the appliance inlet with other components such as...

Light-dimmer driving circuit

The invention relates to a light-dimmer driving circuit. The light-dimmer driving circuit comprises a power supply input module, a transformer, a current output driving module, a pulse width modulation (PWM) module, an input voltage sampling module, an output voltage sampling module and a control center, wherein the power supply input module is mainly used for rectification and filtering of an input voltage signal, the transformer is used for voltage reduction of the voltage signal output by the power supply input module, the current output driving module is used for driving of current output according to the voltage signal which is transformed, the PWM module is used for adjusting output power of the current output driving module according to a control signal in the control center, the input voltage sampling module is used for sampling of the input voltage signal and transmitting the input voltage signal to the control center, the output voltage sampling module is used for sampling of output voltage and transmitting the output voltage to the control center, and the control center is used for controlling a PWM signal according to an input voltage sampling signal, an output voltage sampling signal and an input current signal. According to the light-dimmer driving circuit, due to the fact that the control center is used for controlling the PWM signal according to the input voltage sampling signal, the output voltage sampling signal and the input current signal, the output power of the current output driving module is enabled to change evenly, flicker-free light adjusting is achieved, constant current output is achieved, and range of the light adjusting is wide.
Owner:GUANGDONG ZONOPO INTELLIGENT TECH

Vehicle-mounted interface equipment and data acquiring and processing method thereof

The invention relates to vehicle-mounted interface equipment and a data acquiring and processing method thereof. A microprocessor control module outputs an instruction to an equipment monitoring module, and the equipment monitoring module controls signal output to cut off the output of a train digital quantity output module and a sensor interface module; the microprocessor control module receives the status information of a sensor interface module and a bus interface module, communicates with an upper machine according to format protocol, simultaneously receives control information sent by the upper machine and transmits the control information to the bus interface module and a train traction control module to execute. The acquisition of the status information and the position information of a train is realized, and necessary input output is provided for the automatic operation control of a vehicle-mounted control system. Meanwhile, the equipment monitoring module has a fault orientation safety function of carrying out real-time monitoring on a device and a train line, and the running safety of the train is ensured. In addition, three redundant power inputs of an external power supply input module and the train traction control module working in a hot spare mode increase the reliability of the vehicle-mounted interface equipment.
Owner:SHANGHAI AUTOMATION INSTRAION CO LTD

Power source management system and portable electronic device with same

The invention relates to a power source management system which comprises a power source device, a detection module and an output power control module, wherein the power source device comprises a battery and a power source input module; the detection module comprises a charging control chip; the charging control chip is electrically connected with the battery, the power source input module and the output power control module; the charging control chip controls the charging current of the battery and detects the output current of the power source device; and the power source device corresponding to the charging control chip is also respectively provided with an over-current protection point, and when the current output by the power source device is detected to exceed the corresponding over-current protection point, the charging control chip can be used for reducing the charging current of the battery or the output power control module can be used for reducing the working frequency of the portable electronic device so as to reduce the output current of the battery or the power source input module. The invention also provides a portable electronic device with the power source management system.
Owner:HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1

Magnetic disk array system and power-down data protection system and method for the same

The embodiment of the invention discloses a system for protecting the power-fail data of a disk array. The system comprises a power input module, a battery electricity preparation module, a control module and a storing module. The power input module is used for converting the input alternating current to the DC current when the power supply is normal, supplying power to the control module and the storing module, and charging the battery electricity preparation module; the battery-prepared module is used for directly supplying the power to preset disk arrays in the control unit and the storing module when the input of the power supply is abnormal; the control module is used for writing the data cached above onto the storing module; the storing module is used for finally storing data. The embodiment of the invention further discloses a method for protecting the power-fail data and a disk array system. With the adoption of the scheme, the power can be directly supplied to the preset disk arrays arranged in the control unit and the storing module through the battery electricity preparation module, so that the voltage conversion is unnecessary, and the electricity preparation volume and the data lost are reduced.
Owner:HUAWEI DIGITAL TECH (CHENGDU) CO LTD

PLC automated testing device

The invention discloses a PLC automated testing device. The PLC automated testing device is characterized by comprising a power input interface, a first signal isolation system, a first data input and output interface, a first high voltage isolation system, a second signal isolation system, a second data input and output interface, a second high voltage isolation system, an attenuation network, a power input module, a CPU control system and a signal testing system. The power input module and the attenuation network are respectively connected with the CPU control system, the first signal isolation system and the second signal isolation system are respectively connected with the power input interface, the first high voltage isolation system and the second high voltage isolation system are respectively connected with the attenuation network, the first signal isolation system and the first high voltage isolation system are respectively connected with the first data input and output interface, the second signal isolation system and the second high voltage isolation system are respectively connected with the second data input and output interface, and the signal testing system is used for being connected with two PLC devices to be tested in testing. The PLC automated testing device can automatically test the PLC devices.
Owner:SHENZHEN ALLWINS TECH

Water source ultraviolet sterilizer control system and control method thereof

The invention relates to a water source ultraviolet sterilizer control system. The control system comprises a micro-control unit, a water temperature sensor monitoring module, an ultraviolet intensity monitoring module, a control panel and a power source input module. The water temperature sensor monitoring module comprises a temperature sensor and a temperature sensor signal transmission circuit. The ultraviolet intensity monitoring module comprises an ultraviolet intensity sensor and an ultraviolet intensity sensor signal transmission circuit. The control panel comprises an LCD displayer, a control system operation indicator lamp and functional keys. The invention further relates to a system control method, and the system control method includes the steps of starting an ultraviolet sterilizer and the control system, adjusting light source intensity, monitoring a light source timely, removing faults and the like. The ultraviolet intensity is adjusted through water temperature monitoring information, the stability and safety of the ultraviolet sterilizer are enhanced by monitoring ultraviolet lamp tubes, monitoring of a DCS control system, a PLC control system and other control systems is achieved through a 485 communication interface, maintainability of equipment is improved, and operation cost is low.
Owner:WUXI JIANGDALIANSHENG WATER TREATMENT TECH CO LTD

Electric water heater

The invention discloses an electric water heater. The electric water heater comprises an alternating-current power supply, a heating module, an electric leakage detection key, an electric leakage detection module, a central control unit and a power control module, wherein the alternating-current power supply is used for providing power supply voltage for heating for the heating module; the heating module is used for heating water in a liner of the electric water heater; the electric leakage detection key is used for outputting an electric leakage detection key signal; the electric leakage detection module is used for detecting the live wire current and null line current of the alternating-current power supply; the central control unit is used for judging whether or not the electric water heater leaks current according to the live wire current and the null line current, and outputting a corresponding control signal to the control end of the power control module according to a judgment result in order to control the switch-on and switch-off states of the heating module and the alternating-current power supply; the power control module is used for executing the switch-on and switch-off actions of the heating module and the alternating-current power supply. By adopting the electric water heater, the potential safety hazard of electric leakage can be reduced, and the concern of a user about the safety of a product can be eliminated.
Owner:WUHU MIDEA SMART KITCHEN APPLIANCE MFG CO LTD
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