Results 1 to 10 of about 212,813 (134)
Mine intrinsic safety power supply based on adjustable capacity and protection time
Meikuang Anquan, 2021 In view of the contradiction between the capacity and impact resistance of mine intrinsically safe power supply, an intrinsically safe power supply with adjustable capacity and protection time, self-recovery and slow start function is designed.
ZOU Dedong, LIU Peng
doaj +2 more sources
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 ...
LIU Qi
doaj +2 more sources
Several Methods of Reducing Discharge Energy for Intrinsic Safety Power Supply
Meikuang Anquan, 2020 In order to reduce the discharge spark energy of the intrinsic safety power supply, several measures are proposed in this paper. When the over-current protection occurs, DC-DC or AC-DC module should be turned off as quickly as possible, and the ...
DONG Jianguo, LI Yanmin, ZHOU Xingdong, ZHANG Lei
doaj +2 more sources
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 ...
CHEN Huili, LI Jie
doaj +2 more sources
Design of protection module of intrinsic safety power supply based on LT4356
Gong-kuang zidonghua, 2014 In view of problems of simple protection function, low conversion efficiency, poor anti-interference ability and low intrinsic safety current existed in current protection module of intrinsic safety power supply, a protection module of intrinsic safety ...
XIE Guojun +3 more
doaj +2 more sources
Gong-kuang zidonghua, 2019 Over-voltage and over-current protection are two forms of over-voltage and over-current protection sequences of intrinsic safety power supply. In order to study the influence of different protection sequence forms on safety performance of intrinsic ...
BAO Changjun +4 more
doaj +2 more sources
Basic Requirements and Design Method of Mine-used Intrinsic Safety Power Supply
Gong-kuang zidonghua, 2012 Combining with related requirements of new national standard GB3836.4-2010 and Mining Products Safety Approval and Certification Center, the paper analyzed technical performance of mine-used intrinsic safety power supply, namely electrical isolation ...
ZHU Qian-wei
doaj +1 more source
Design of internal power supply circuit for mining intrinsic safety broadcasting system equipment
Meikuang AnquanThe mining intrinsic safety broadcasting system equipment has the characteristics of unbalanced load current and high power consumption. In response to the problems of high start-up impulse current, short power supply distance, unreliable voltage ...
Dedong ZOU, Chengdong LI
doaj +2 more sources
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 ...
ZHOU Xue-feng
doaj +1 more source
Application of Digital Control Technology in Intrinsic Safety Switching Power Supply
Gong-kuang zidonghua, 2010 In order to solve problems of small output power, low working frequency, large output ripple and high fault rate, the paper proposed a design scheme of applying DSPIC30F1010/2020 digital control chip in intrinsic safety switching power supply, gave the ...
YIN Xiang-qing +3 more
doaj +1 more source