在各厂接送职工上下班的车辆中,为便于乘员和驾驶员联系,早就装有讯响器,乘员籍讯响器通知前面驾驶员开车,中途停车等。有的驾驶员同志又提出,能否使讯响器除发挥这一作用外,兼作转向发声器。根据这个要求,我们试用如图示线路。 乘员接通按钮开关,讯响器能正常工作;使用转向开关时,讯响器充作转向发 In the factory shuttle workers to and from work vehicles, in order to facilitate the crew and the driver contact, has long been equipped with sirens, crew sirens inform drivers in front of driving, stopovers and so on. Some drivers comrades have also proposed whether or not the sounder will function as a sounder instead of a sounder. According to this requirement, we try the line as shown. When the occupant turns on the button switch, the sounder can work normally. When the steering switch is used, the sounder is used as a steering wheel