数字电压设计与总结报告
摘要：
本设计详细描述了直流电压的测试与显示。其主要器件为含有双积分A/D转换器和数字电路的芯片ICL7107，完成电压的测试功能，由于7107型为大电流反相器输出，因此，其显示部分采用共阳极半导体数码显示器LED完成测试结果的显示功能。其中，芯片ICL7107的外围电路除接有直接驱动的共阳极半导体数码显示器LED外，还接有时钟振荡器、分压电路、输入端阻容滤波电路、基准电容、自动调零电容、积分电阻以及积分电容。本设计的特点在于芯片本身能直接驱动共阳极的LED显示器，不需要另加驱动器件，因此整机线路比较简化，而且其显示亮度较高。
Abstract:
This design detailed described the direct current electric voltage of the test and the manifestation. Its main machine piece is the chip ICL7107 with a pair of integral calculus’s A/ D conversion machine and numerical electric circuit to complete the test function of the electric voltage . Because of 7107 the types are anti- for big electric current mutually the machine output; therefore, it shows that the total anode semi-conductor figures display LED of parts of adoptions completes the manifestation function of test the result. Among them, the outer circle electric circuit of the chip ICL7107 is in addition to connecting to have the direct driving total anode semi-conductor figures display LED, sometimes still connect the clock flaps the machine, presses the electric circuit, importation to carry the resistance to permit an electric circuit, basis electric capacity separately and adjusts zero electric capacities, the integral calculus electric resistances and the integral calculus electric capacities automatically. The characteristics of this design lies in the display of LED that the chip can drive the total anode directly,
don’t need to add another the actuator piece, so the whole machine circuit compares the simplification, and it show the bright degree is higher.
