本文扼要介绍了缓冲电路的产生与发展。今天无损缓冲电路已成为实现软开关的重要技术之一。本文以单管功率变换电路为例,介绍了几种典型无损缓冲电路拓扑,介绍了缓冲原理与电路的特点。在此基础上总结了几点网络组成的方法。 This article briefly introduces the generation and development of the buffer circuit. Today, lossless snubber circuit has become one of the important technologies to achieve soft-switching. In this paper, a single-tube power conversion circuit, for example, introduces several typical non-destructive buffer circuit topology, introduces the buffer principle and the characteristics of the circuit. Based on this, it summarizes some methods of network composition.