Results 1 to 10 of about 10,677 (122)
Design of a mine-used switching power supply
Gong-kuang zidonghua, 2018 For problems of existing mine-used switching power supply such as large harmonic current, low power factor and so on, a mine-used switching power supply was designed by use of technologies of active power factor correction and resonant soft switching. Design indexes of the power supply were introduced as well as design scheme of its hardware circuits ...
LIN Yin
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Design analysis of mine-used intrinsic safety power supply
Gong-kuang zidonghua, 2014 In view of requirements that intrinsic safety power supply must has multi-protection of over-current and over-voltage, the paper introduced working principle of a circuit of mine-used intrinsic safety power supply based on LM317 regulator, analyzed design requirements of fuse, filter capacitor and regulator in the circuit, and detailedly introduced ...
LIU Qi
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Design of mine-used intrinsically safe remote relay power supply
Gong-kuang zidonghua, 2016 In order to satisfy long-distance transmission requirements of sensor used on underground super long working face, a mine-used intrinsically safe remote relay power supply was designed. Parallel connecting a mine-used intrinsically safe remote relay power supply between the sensor and intrinsically safe power supply can compensate differential pressure
LIN yi
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A mine-used adaptive power supply with super wide input voltage range
Gong-kuang zidonghua, 2020 For problems of existing mine-used power supply such as inconvenient access, large volume, poor anti-fluctuation ability, complex circuit and high cost, a mine-used adaptive power supply with super wide input voltage range was designed. The power supply adopts input-series flyback converter, which can reduce voltage stress of power switching tube and ...
LIN Yin, MENG Xiaohong, LIU Yahui
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Design of a high-performance mine-used intrinsically safe power supply
Gong-kuang zidonghua, 2019 For problems of poor electromagnetic immunity and weak load capacity of current intrinsically safe power supply, a high-performance mine-used intrinsically safe power supply was designed. The power supply is based on quasi-resonant flyback switching power supply and dual overvoltage and overcurrent protection, which can convert AC85-250 V wide input ...
HUANG Hesong +3 more
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Design of mine-used power supply with super wide input voltage range
Gong-kuang zidonghua, 2016 For problems of existing mine-used flameproof and intrinsically safe type power supply with multiple input voltage level such as large voltage fluctuation, heavy weight and difficult maintenance, a design scheme of mine-used power supply with super wide input voltage range was put forward.
LIU Yahui
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Gong-kuang zidonghua, 2020 For problems of large output voltage ripple-wave and poor intrinsic safety performance existed in mine-used intrinsic safety type power supply caused by large filtering capacitor of switching converter, a filtering capacitor resolution scheme was proposed by use of active capacitor technology.
CHEN Huili, LI Jie
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Research of Mine-used Digital Three-phase Power Supply
Gong-kuang zidonghua, 2012 For the problem of harmonic pollution of underground power network caused by existing mine-used three-phase power supply, a mine-used digital three-phase power supply based on STM32F103VB was designed and working principle and control strategies of the power supply were introduced in details. A typical AC-DC-AC structure is adopted in the power supply.
YANG Jian-kang +2 more
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Design of Battery Management System of Mine-used DC Power Supply
Gong-kuang zidonghua, 2012 The paper introduced overall structure and designs of hardware and software of battery management system of mine-used DC power supply. The system assesses remaining capacity by detecting charge current and discharge current to ensure continuous power supply capacity of battery, realizes abnormal alarm by temperature detection to extend battery life ...
TIAN Wei-ming
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Design of a new type of protection circuit of mine-used intrinsic safety power supply
Gong-kuang zidonghua, 2013 The paper put forward a design scheme of a new type of protection circuit of mine-used intrinsic safety power supply with LM339 comparator and MAX4080SASA current detection chip based on the analysis of advantages and disadvantages of traditional protection circuit of mine-used intrinsic safety power supply, and analyzed principle and characteristics ...
ZHOU Xue-feng
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