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本文介绍的双限温度告知器,可用来监测温室、蔬菜大棚等内部的环境温度,当温度低于或高于限定的温度时,会及时发出声、光告警信号。该装置使用方便,效果不错。电路工作原理:实用的双限温度告知器电路如图1所示。主要由温度传感控制集成电路、电子开关、声响发生器等组成。 IC1是一种智能型温度传感器,其感温元件设置于芯片内部。主要参数为:工
This article describes the double limit temperature notifier can be used to monitor the greenhouse, greenhouse and other internal environmental temperature, when the temperature is below or above the limit of the temperature, it will promptly sound and light alarm signal. The device is easy to use, the effect is good. Circuit works: Practical dual temperature teaser circuit shown in Figure 1. Mainly by the temperature sensing control integrated circuits, electronic switches, sound generators and other components. IC1 is an intelligent temperature sensor, the temperature sensing element is set inside the chip. The main parameters are: workers