固態繼電器的原理與應用

摘要：闡述了固態繼電器的原理、結構、特點及交流直流固態繼電器的適用范圍，并針對交流固態繼電器，提出了根據它的幾個關鍵參數來合理選擇固態繼電器的方法、應用電路在設計上需要注意的一些問題以及給出了相應與計算機駁接的接口電路。 敘詞：固態繼電器；適用范圍；關鍵參數；應用電路 Abstract：The principle,structrue,characteristic and the available range of AC-DC solid state relays are introducde in this article.And the problems,which should be paid more attention to during the selection and application of such relays,with interface circuit with PC,are also prensentde. Keyword：solid state relays available range critical parameters application circuit