单片机系统硬件电路抗干扰常用方法（Single chip microcomputer system hardware circuit anti-interference commonly used method）.docVIP

单片机系统硬件电路抗干扰常用方法（Single chip microcomputer system hardware circuit anti-interference commonly used method） Singlechip system hardware circuit, anti-interference commonly used method,.Txt childhood feel father is not simple, and later feel that he is not simple, and later felt that his child is not simple. The more you want to know whether you have forgotten something, the better you remember. Single chip microcomputer system hardware circuit anti-interference commonly used method practice The main factors that affect the reliable and safe operation of the single chip microcomputer system mainly come from various electrical disturbances inside and outside the system, and are affected by the system structure design, component selection, installation and manufacturing process. These constitute the interference factors of single-chip microcomputer system, often lead to the operation of single-chip microcomputer system is abnormal, light affect product quality and output, heavy will lead to accidents, causing significant economic losses. There are three basic elements of interference: (1) interference source. A component, device, or signal that produces interference, described in mathematical language as follows: du/dt, di/dt, is the source of interference. Such as: lightning, relay, SCR, motor, high-frequency clock, etc., may become interference source. (2) propagation path. A channel or medium that interferes with transmission from sensitive sources to sensitive devices. The typical propagation path of interference is through the conduction of wires and the radiation of space. (3) sensitive device. Of objects that are easily disturbed. Such as: A/D, D/A converter, microcontroller, digital IC, weak signal amplifier, etc.. Classification of interference 1 Classification of interference There are many kinds of interference, which can be classified according to the causes of noise, the mode of transmission, the characteristics of waveform and so on. For reasons of producti