摘要
本文介绍笔者研制的脉宽调制（ＰＷＭ）３００Ｗ开关稳压电源的电路，原理及部分电路的设计、调试方法．该机具有输出电流大、成本低。
Presented in this paper are the circuit, principle and the method of design and adjustment of part circuits of the pulse width modulation (PWM) mode 300w switching regulated power supply. This power supply is noted for its big output current, lower cost and practicability.
