摘要
设计一款静电除尘振打系统过流保护器,电源电路采用+24 V输入、±15 V输出的方式,可以提供200 mA电流,具有体积小、重量轻、调试简单、抗干扰能力强等特点。电路保护范围可调,能迅速检测出短路和断路情况,有电流时,非断路信号,并且当电流达到或超过某设定值(电流保护值)时,立即动作,发出关断电源信号。阐述了所设计电路的基本原理、具体实现方法、参数计算过程。现场运行和实验检测表明,该保护电路具有输出电压稳定、保护灵敏度高、响应速度快、可靠性高的特点。
An protector in the static electrical dust-removing rapping system is designed.The protection circuit consists of protection circuit and power circuit.The power circuit uses ＋24 V input,and ±15 V output for the device.Every circuit can provide 200 mA current.There are some features of the power,such as small,light weight,easy adjustment,anti-interference ability and so on.Protection circuit can adjust the range of protection,detect short circuit and open circuit rapidly,if there is a non-open circuit signal,the circuit will act and immediately send shutdown power signals out when this current reaches or exceeds a certain value（the value of current protection）.The basic principle,specific implementation method and parameter calculation of the over-current protector are described.From site operation and laboratory testing,it show that some characteristics of the protection circuit have stability of operation,protection of high sensitivity,fast response and high reliability.
出处
《辽宁科技大学学报》
CAS
2010年第5期543-547,共5页
Journal of University of Science and Technology Liaoning
