數(shù)字電位器是一種用數(shù)字信號(hào)控制電位器滑動(dòng)端位置的新型器件,它由數(shù)字信號(hào)控制調(diào)節(jié),具有在自動(dòng)控制系統(tǒng)方面機(jī)械電位器無(wú)法實(shí)現(xiàn)的優(yōu)點(diǎn)。本文以美國(guó)DALLAS 公司的DS1267 型數(shù)字電位器為例,介紹數(shù)字電位器的結(jié)構(gòu)、原理和典型應(yīng)用電路。
關(guān)鍵詞：數(shù)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