近年来,在国外汽车排出气体造成公害已成为社会问题。为使排气达到净化的目的,特别是在高速运转时,燃料能充分完全地燃烧,晶体管和可控硅点火技术有了很大的发展。点火装置的种类和特点广泛应用的汽车点火装置如图1所示。断电器触头使初级点火线圈里的电流间断流通,且产生200～300伏电压;与此同时在次级线圈里感应生成20～30千伏高电压,使火花塞跳火。此电压和电流波形如图2。采用此种方式历史已久,从出现发动机时就已应用。因为断电器触点 In recent years, it has become a social problem that pollution caused by the exhaust gas of automobiles in foreign countries. In order to achieve the purpose of purifying the exhaust gas, especially at high speed, the fuel can be fully and completely burned, and the transistor and thyristor ignition technologies have been greatly developed. Types and Features of Ignition Devices A wide range of automotive ignition devices are shown in Figure 1. Breaker contacts make the primary ignition coil in the current intermittent circulation, and produce 200 ~ 300 volts; at the same time in the secondary coil induces the generation of 20 ~ 30 kV high voltage spark plug sparks. This voltage and current waveform shown in Figure 2. This approach has a long history and has been applied since the advent of the engine. Because of the breaker contacts