论文部分内容阅读
办公室照明控制电路应用于办公室照明控制的电路设计如图3。该电路是按图1所示的通常用法设计的。传感器视野内一个运动物体的热辐射,引起传感器上红外辐射入射线的变化,由此产生一个电输出该输出信号由(ICla 和 IClb)放大,然后送到窗口比较器电路(IClC 和 ICld)。若放大了的输出信另超过比较器的门限值,比较器产生一输出去触发单稳电路(IC2)。当单稳处于触发状态时,它加偏置使继电器的驱动品体管(TR1)进入导通,因此在集电极电路上的
Office lighting control circuit used in office lighting control circuit design shown in Figure 3. The circuit is designed according to the usual usage shown in Figure 1. The thermal radiation from a moving object within the field of view of the sensor causes a change in the incident radiation of the infrared radiation on the sensor, thereby producing an electrical output. The output signal is amplified by (ICla and IClb) and sent to window comparator circuits (IClC and ICld). If the amplified output signal exceeds the comparator threshold, the comparator generates an output that triggers a one-shot circuit (IC2). When the monostable in the trigger state, it biased to make the relay drive transistor (TR1) into conduction, and therefore in the collector circuit