【正文】 ....................................... 2 電路原 ................................................................................................................ 2 性能指標(biāo) ............................................................................................................ 2 第三章 主要元器件原理及相關(guān)計(jì)算 ................................................................................. 3 ................................................................................................... 3 555定時(shí)器 ................................................................................................. 3 555定時(shí)器的電路 結(jié)構(gòu)及其功能 .................................................................. 3 555定時(shí)器的應(yīng)用分類 ................................................................................ 4 測(cè)量值 ................................................................................................................ 5 電位器 ................................................................................................................. 5 電位器的作用及特點(diǎn) .................................................................................. 5 蜂鳴器 ................................................................................................................. 6 蜂鳴器的結(jié)構(gòu)原理 ...................................................................................... 6 發(fā)光二極管 ......................................................................................................... 7 相關(guān)性能指標(biāo)計(jì)算 .............................................................................................. 7 第四章 焊接及調(diào)試過(guò)程與注意點(diǎn) ..................................................................................... 8 安裝及焊接步驟 ...........