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LM338做稳压电源,怎么解决可变负载两端电压变化问题?

Other Parts Discussed in Thread: LM338

我用LM338输出4V电压,发现当负载电阻变小、电流增大,导致线路阻抗分压。结果是负载电阻两端实际电压减小,此问题有解决方法吗?