摘要
随着时代的发展,数字电子技术已经普及到人们生活中的各个领域.本系统设计成一控制输出电压在5～9V且步进为0.5V的直流稳压电源,电路由数字控制部分、D/A转换部分、可调稳压部分组成.数字控制部分采用+/-按键来调整控制一可逆二进制计数器来预设电压值,二进制计数器输出输入到D/A转换器中,经过D/A转换后控制调整步进为0.5V,经测试,可输出稳定5～9V的稳定直流电源,步进0.5V,纹波小于50mV.同时预设一个复位按键来进行复位.
With the development of digital electronic technology,it has spread to all areas of our lives.The system is designed as a controlled output voltage step of 5 -9V and 0.5V DC power supply,the circuit of the digital control part,D/A converter section,adjustable voltage regulator components.The digital control part is＋/-button to adjust the control of a reversible binary counter to preset voltage value,the binary counter output and input to the D/A converter,and after D/A converter to adjust the control step of 0.5V,tested,can output a stable 5 - 9V DC power supply stable,step 0.5V,the ripple is less than 50mV.At the same time pre-set a reset button to reset.
出处
《宁德师专学报（自然科学版）》
2010年第1期59-61,66,共4页
Journal of Ningde Teachers College(Natural Science)
