数字可控高精度电压源设计  

Design of High Precision Digital-Controlled Power Supply

作　　者：王晶[1] 张雁霞[1] 田耕[1] 田晓霞[1] 阮林波[1] 李海涛[1] 

机构地区：[1]西北核技术研究所强脉冲辐射环境模拟与效应国家重点实验室,西安710024

出　　处：《核电子学与探测技术》2015年第9期921-925,共5页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11305129);国防科技基础研究基金项目

摘　　要：本文设计了一种0~±1 000 V双极性数字可控式高压电压源。该电压源用触控液晶屏或远程控制PC作为人机接口,使用C8051F340单片机对使用人员的操作进行解读并控制DAC输出,由DAC输出电压的大小控制高压模块的输出。解决了同一输出接口下正负电源共地兼容的难题。经过测试,该高压电源线性度好,控制精度高,体积小,可以满足辐射探测器用低纹波偏置电压、固体绝缘材料体积电阻率和表面电阻率试验、半导体材料或压敏电阻等的I-V性能测试等实验要求。A precision digital - controlled high voltage source, voltage range from 0 to ± 1 000 V, is developed. A touch - control LCD screen is used as the man - machine conversation interface. A micro - controller unit C8051 is applied to understand the user＇s touch operating and to carry out the control command for the output of DAC. The output of high voltage unit is controlled by the output magnitude of DAC . This design has a good performance in linearity and precision. It is especially suitable for I - V characteristic test of semiconductor and in other occasions which require high precision voltage.

关 键 词：数字高压源 程控电压源 直流稳压源 高精度 

分 类 号：TL82[核科学技术—核技术及应用] TN86[电子电信—信息与通信工程]