數字電位器是一種用數字信號控制電位器滑動端位置的新型器件,它由數字信號控制調節,具有在自動控制系統方面機械電位器無法實現的優點。本文以美國DALLAS 公司的DS1267 型數字電位器為例,介紹數字電位器的結構、原理和典型應用電路。
關鍵詞：數字電位器 DS1267 量程切換 DC—DC 變換器 平衡電橋

Double digital rheostat DS1267 and model application
Zeng Fanling
（Luo Ding Occupation Technical College, Guangdong 527200，China)
Abstract: The digital rheostat is one kind skids the end position newcomponent with the digital signal control potentiometer, it by the digital signal control adjustment, has the merit which is unable inthe automatic control system aspect mechanical potentiometer torealize. This article take American DALLAS Corporation's DS1267 digital rheostat as the example, the introduction digital rheostat structure, the principle and the model applicationelectric circuit.
Keywords:digital rheostat DS1267 measuring range cut DC - DC converter balanced bridge