摘要
电路采用可控硅代替交流接触器，另设双向可控硅烧损检测电路，实现无噪音、无振动控制，提高了控制精度，延长了控温仪表的使用寿命。
In furnace temperature controllers, thyristors are employed to replace the AC contactors. Also an additive bi directional thyristor circuit for the detection of burn out is attached. As a result, noiseless and vibration free control is realized, the precision of the control is enhanced and the service life of the instrument is prolonged.
关键词
电炉
双向可控硅
炉温控制器
无触点开关
temperature measuring instruments
bi directional thyristors
trigger circuits
fault detection
