基于经典芯片LM317和LM337的可编程电源设计，由于芯片基准电压的固有误差，尤其在输出小电流时，精度会急剧恶化··· 已有不少设计实例(DI)采用特定IC，以创新方式实现了可编程电流源。图1展示了一些思路。5WPednc 图1：两个独立的电流源，其中一个为负电压 ...

This is an LM317 based adjustable voltage regulator with a maximum output of 3V and 1.5A. The output voltage depends on the VIN, R1 and R2 values, so the circuit can be modified to use with a maximum ...

A simple NiCd charger can be built using ‘junk box’ components and an inexpensive LM317 or 78xx voltage regulator. Using a current limiter composed of R3 and a transistor, it can charge as many cells ...