论文部分内容阅读
在城镇道路施工时,为了防止夜晚过往人员、车辆发生事故,通常要在施工现场设置并开启红色的警示灯。为了提高警示效果,该灯最好工作在闪烁状态。本文介绍的警示灯控制电路就具有光控和闪烁两种功能。 1.工作原理电路如附图所示。采用了一片CMOS“六非门”(F1～F6)集成电路芯片(CD4069B),其中,F1和F2及外围元件组成频率可调的超低频振荡器,其工作与否受二极管V2工作状态控制。F3作为反相器。
In the construction of urban roads, in order to prevent the passing of night people and vehicles, it is common to set up and turn on the red warning light at the construction site. In order to improve the warning effect, the lamp is best working in flashing state. This article describes the warning light control circuit with light control and flashing two functions. 1. The working principle circuit shown in the figure. Using a CMOS “Six non-door ” (F1 ~ F6) integrated circuit chip (CD4069B), which, F1 and F2 and the external components of the frequency adjustable ultra-low frequency oscillator, the work of its work by the diode V2 control. F3 as an inverter.