目前日本车辆的各个电路中使用了各种类型的继电器。其中低压电路里纯用于接通、断开的辅助继电器,随着车辆技术的发展而逐渐增加。特别是控制电路用的继电器,其工作性质重要,而且大都动作频率较高,所以必须是工作可靠寿命长。最近,为了减轻维护工作量(即无需保养或延长维修周期),而在车辆设备中用上了可控硅、二极管、晶体管等元件,大幅度 At present, various types of relays are used in various circuits of Japanese vehicles. One of the low-voltage circuits used in the purely on, off the auxiliary relay, with the development of vehicle technology and gradually increased. Especially the control circuit with the relay, the nature of their work is important, and most of the high frequency of operation, it must be reliable and long working life. Recently, in order to reduce the maintenance workload (that is, without maintenance or prolongation of the maintenance cycle), and used in the vehicle equipment, silicon, diodes, transistors and other components, a substantial