摘要
主要介绍了一种抗干扰量可调的模拟量开关电路的设计及应用.该电路在电压比较器的基础上外加电阻、二极管等器件,具有可变抗干扰能力的功能.电路选用了LM339,上下阈值和输出值大小可以独立调整.电路实用可靠,参数调整方便,抗干扰能力强.
A kind of anti-interference capacity the basis of voltage comparator, the circuit is which make the hysteresis voltage adjustable, circuit , the LM339 is selected, the upper adjustable analog witching circuit is introduced. composed of resistances, diodes and other devices the anti-interference capacity adjustable. In this and lower hysteresis voltage and output can be independently adjusted. Also, the parameter of the circuit can be adjusted conveniently, and the capability of resisiting interference is strong. Practical applicaton shows that the circuit is reliable.
出处
《上海电力学院学报》
CAS
2009年第2期165-168,共4页
Journal of Shanghai University of Electric Power
关键词
电压比较器
阈值电压
抗干扰能力
开关电路
voltage comparator
hysteresis voltage
anti-interference capacity
switching circuit
