A heating element is designed using resistance heating silk and printed board, and an instrument of temperature measurement and control is designed using transistor as the temperature sensor.
介绍利用电阻加热丝、印制基板材料设计制做的加热元件和用晶体管作温度传感器设计制做温度测量控制器的电路工作原理及其在物理实验中的应用。
The heating element is screwed up by high resistance alloy wires and installed on the hearth's two sides, the rear wall of the furnace bottom and the furnace door.
加热元件的由高电阻合金丝绕制成螺旋状，安置在炉膛二侧，炉底后墙及炉门上。
If the heading element is much damaged or its resistance value increases too much and cannot reach the furnace temperature, it is better to replace the heating elements with mew ones.
若元件损坏较多或阻值增长过大，无法达到所需炉温时最好全部更换新元件。
应用推荐