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本文用反馈调节原理分析线性串联稳压电源电压稳定度、漂移、噪声与电路各环节的关系,以确定线路方案、元器件选择原则。并从系统热设计和电磁兼容性的角度分析环境对稳定度,漂移、噪声的影响,得出从整体布局、布线、屏蔽、接地等一些具体的抑制噪声措施。
In this paper, the principle of feedback regulation is used to analyze the relationship between the voltage stability, drift, noise and various links of the linear series regulated power supply, in order to determine the principles of circuit scheme and component selection. From the point of view of system thermal design and EMC, the influence of environment on stability, drift and noise is analyzed. Some concrete measures to suppress noise, such as overall layout, wiring, shielding and grounding, are obtained.