论文部分内容阅读
某些电路常常利用印制电路板上的铜箔线条作为检测电流的小阻值电阻,这种铜箔电阻的优点是简单经济、设计灵活、与电路板上的其它元件感受同一环境温度(这对实现温度补偿往往是必须的)。H形桥式功率开关和线性调压器是铜箔电阻的典型应用场合,例如,图中所示的低压差调压器(即输入电压与输出电压之差较小、自身压降较低的调压器)电路中,Rs就是做在印制电路板铜箔线条上用来检测输出电
Some circuits often use copper foil lines on a printed circuit board as a small resistance value for detecting current. This type of copper foil resistance has the advantages of being simple and economical, having a flexible design and being able to sense the same ambient temperature as other components on the circuit board It is often necessary to achieve temperature compensation). H-bridge power switches and linear regulators are typical applications of copper foil resistors. For example, the low dropout regulator shown in the figure (ie, the difference between the input voltage and the output voltage is small and the voltage drop is low Regulator) circuit, Rs is done in the printed circuit board copper foil used to detect the output power