If the oxygen sensor heater circuit is wired directly to the control unit, an A/ D converter with a basic shunt circuit is used to directly check the current of the circuit ( Fig.6). 假如氧传感器加热通路间接联接到掌握器,存正在一度根本的串联通路的A/D转换器可用来间接审查以后的通路(图6)。
Electric heater is used to change environment temperature of H section energy saving lamp and the relation of variations of voltage ( U) and electrical current ( I) of lamp is repeatedly determine by using method shower. 用电热器模拟改变H型节能灯工作时的环境温度T,反复测定不同温度下灯的电压U和电流I的变化关系;
Owing to the big random error existed in the measurement of emission power for IR heater, the electro-thermal emission conversion efficiency obtained by the current standard measuring method is not a quantitative one. 用现有标准测试方法测得的红外加热器电一热辐射转换效率,由于对加热器的辐射功率测量存在很大的随机误差,因此失去了定量意义。
One set of boron diffusion technologies to form the heater have been developed, which is effective in preventing the invalidation of the perpendicular PN junction of the cantilever during tip heating, thereby avoiding electric current leakage. 探索出一套特殊的有关加热电阻的硼热扩散技术,有效防止了器件在工作过程中由于悬臂梁垂直方向上PN结在高温下失去电隔离作用而发生漏电现象。