【摘要】 数字电位器和机械电位器相比 ,具有耐冲击、抗振动、噪声小、调节准确方便、性能稳定、使用寿命长、便于和计算机接口、可由编程实现电阻的改变等优点。以两种典型的数字电位器AD840 3和X95 11为例介绍其基本结构、工作原理和应用。更多还原

【Abstract】 As compared with mechanical potentiometers, digital potentiometers possess higher shock resistance and vibration resistance, lower noise, higher stability and longer life. In addition, it is easier to adjust and to connect to computers. Its resistance controlled by programs. AD8403 and X9511 are two typical digital potentiometers. Their basic structure, operation principium and applications are presented. (1 refs.)更多还原