通用的直流稳压电路,由于串联晶体管的压降很大,因而效率很低。本文描述一种新型稳压电路,其串联晶体管的压降能够在满负载时低至接近于一个V_(BE)值,因而效率高达94%,且可使用低功率的晶体管。文中还介绍了笔者应用的例子及经验。 Common DC voltage regulator circuit, because the series transistor voltage drop is very large, so the efficiency is very low. This article describes a new voltage regulation circuit whose voltage drop across a series transistor can be as close to a V BE at full load, resulting in efficiencies as high as 94% and using low power transistors. The article also describes the author’s application examples and experience.