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通用型电阻分选仪是电阻生产厂家的电阻生产线及相关用户对电阻进行范围筛选的关键仪表,是电阻质量检测的关键仪器。本设计选用可在线编程的AVR单片机ATmega8,它内带模拟比较器,I/O口可作A/D转换用。仪器采用恒流源电路,保证输出电流的恒定。采用31/2位LED数字显示器,读数直观清晰;上下限可自由设定;使用方便,实现了自动化、智能化。该产品性能稳定,反应速度快,功耗小,输出电流恒定,适用范围广。
Universal resistance sorter is the resistance of the manufacturer’s production line and related users to screen the resistance of the key instruments, resistance and quality testing of the key instruments. The design selection of online programming AVR microcontroller ATmega8, which with analog comparators, I / O port for A / D conversion. The instrument uses a constant current source circuit to ensure that the output current is constant. Using 31/2 LED digital display, intuitive and clear readings; upper and lower limits are free to set; easy to use, to achieve automation and intelligence. The product performance and stability, fast response, low power consumption, the output current is constant, the application of a wide range.