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本文介绍一款受时间控制的温控电路如附图所示。一、功能介绍:1.定时:采用倒计时方式进行定时控制,控制范围是1～99分,为了简化使用设定操作,特别安排有一个上电开机默认为30分钟的初始值。如果觉得不合适,再利用 AN0和 AN1两个操作键调整所需的工作时间,调整时以2分钟的步长递增或递减。修改完成后,经过2秒钟,屏幕上的小数点开始秒闪烁指示进入倒计时工作,直到显示“00”时工作结束。
This article describes a time-controlled temperature control circuit as shown in the figure. First, the function description: 1. Timing: The use of countdown timer control, the control range is 1 to 99 minutes, in order to simplify the use of setting operations, a special arrangement has a power-on default of 30 minutes of initial value. If you think it is not appropriate, then use AN0 and AN1 two operating keys to adjust the required working time, adjust the time in 2-minute increments or decrements. After the modification is completed, after 2 seconds, the decimal point on the screen starts to flash for 2 seconds to enter the countdown work, and the work ends when “00” is displayed.