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基于LCD的晶体管特性曲线图示仪
引用本文:林益平.基于LCD的晶体管特性曲线图示仪[J].电子测量技术,2008,31(2):109-113.
作者姓名:林益平
作者单位:广东省肇庆学院电子信息工程系,肇庆,526061
摘    要:本文提出了一种在LCD上显示晶体管输出特性曲线的方法,并设计制作了晶体管特性曲线图示仪。该仪器不但能显示NPN、PNP、FET等晶体管的输入、输出特性曲线,并能在屏幕上直接显示HFE值,也可以通过串行口将测试结果传给PC机作为资料存档。在硬件设计上,充分利用了AVRmega16单片机的I/O引脚和片内外设,使仪器简化了电路,降低了成本。在软件设计上,采用数字滤波,使仪器达到了较高的精度,在特定的场合可以取代贵重的专业测试设备在广大电子工作者中得到应用。

关 键 词:LCD显示  AVR单片机  晶体管输出特性曲线  图示仪

Transistor characteristic curve displayer based on LCD
Lin Yiping.Transistor characteristic curve displayer based on LCD[J].Electronic Measurement Technology,2008,31(2):109-113.
Authors:Lin Yiping
Abstract:It is presented that method of displaying transistor characteristic curve on LCD,and displayer has been developed.The device not only can display the characteristic curve of NPN,PNP and FET transistors,but also the value of Hfe directly.Measure data can be transferred to PC which can be saved in files.In the design of hardware,in order to simply circuit of device and to cut cost off,nearly all the resource of the chip has been used.In the design of software,digit filter is adopted,and the device is so precise that can replace costly professional measuring device in special occasion.
Keywords:LCD displaying  AVR microcontroller  transistor characteristic curve  displayer
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