直流电源数字化调节的实现

本文介绍一种新的实现电源电压或电流的调节方法。该方法摈弃了传统的利用模拟电位器进行电压或电流的调节方法,利用数字化的手段进行电压或电流的调节。该方法的特点为：首先将待调节的电压或电流通过模数转换器转换为数字量,然后设置好调节的步进值,将该步进数值与通过模数转换器转换而获得的数字量相加或相减,将所得结果通过数模转换器转换为模拟量,即实现了电源的数字化调节。

THE REALIZATION OF DIGITAL ADJUSTING ABOUT DIRECT CURRENT POWER

The article introduces a new method by which the analog voltage or current can be adjusted. Abandoning the traditional method by which the adjusting of voltage＇s or current＇s value is achieved through regulating the analog potentiometer,this method can adjusting voltage＇s or current＇s value through regulating the digital potentiometer. The character of this method is that：the voltage or current which its value will be regulated is changed into digital value through analog /digit converter firstly,then setting the feet value of adjusting,carry out the addition operation or subtracter operation between the digital value and the feet value. The result of addition operation or subtracter operation is transferred into analog value through digit/analog conversion,therefore the digital adjusting of the direct voltage or current is achieved.