電路板GND什么意思
GND是(shi)電(dian)線接(jie)地(di)(di)端的簡(jian)寫(xie)。代表(biao)地(di)(di)線或0線。這個(ge)地(di)(di)并不是(shi)真(zhen)正意義上的地(di)(di),是(shi)出(chu)于(yu)(yu)應用而假設的一個(ge)地(di)(di),對于(yu)(yu)電(dian)源(yuan)來說(shuo),它就是(shi)一個(ge)電(dian)源(yuan)的負極。
電(dian)路圖上(shang)(shang)和電(dian)路板(ban)上(shang)(shang)的(de)GND(Ground)代表地(di)線(xian)(xian)或0線(xian)(xian),GND就(jiu)是(shi)公共端的(de)意思,也可以說(shuo)是(shi)地(di),但(dan)這個(ge)地(di)并不(bu)是(shi)真正意義上(shang)(shang)的(de)地(di) 。是(shi)出于(yu)應用(yong)而(er)假設的(de)一個(ge)地(di),對于(yu)電(dian)源(yuan)來說(shuo),它(ta)(ta)就(jiu)是(shi)一個(ge)電(dian)源(yuan)的(de)負(fu)極。它(ta)(ta)與(yu)大地(di)是(shi)不(bu)同(tong)的(de)。有時候(hou)(hou)需要將它(ta)(ta)與(yu)大地(di)連接,有時候(hou)(hou)也不(bu)需要,視具體情況而(er)定。
地線(xian)(xian)是(shi)(shi)(shi)在電(dian)(dian)(dian)(dian)系統(tong)或電(dian)(dian)(dian)(dian)子設(she)備中,接大地、接外(wai)殼或接參考電(dian)(dian)(dian)(dian)位為零的(de)導線(xian)(xian)。一般電(dian)(dian)(dian)(dian)器(qi)上,地線(xian)(xian)接在外(wai)殼上,以(yi)防電(dian)(dian)(dian)(dian)器(qi)因內部絕緣破壞(huai)外(wai)殼帶電(dian)(dian)(dian)(dian)而引起的(de)觸電(dian)(dian)(dian)(dian)事故。地線(xian)(xian)是(shi)(shi)(shi)接地裝置的(de)簡稱,地線(xian)(xian)又分為工作接地和安全性(xing)接地。為防止人(ren)們在使(shi)用(yong)家電(dian)(dian)(dian)(dian)及辦公等電(dian)(dian)(dian)(dian)子設(she)備時發生(sheng)觸電(dian)(dian)(dian)(dian)事故而采(cai)取的(de)保(bao)護(hu)接地, 就是(shi)(shi)(shi)一種(zhong)安全性(xing)接地護(hu)線(xian)(xian)。
電路板ant什么意思
電路板上標有“ANT”字樣的,是(shi)天(tian)(tian)線元件。天(tian)(tian)線是(shi)一種變換(huan)器(qi),它把傳輸(shu)線上傳播的導行波(bo),變換(huan)成在無界媒介(通常(chang)是(shi)自由空(kong)間(jian))中(zhong)傳播的電磁波(bo),或(huo)者(zhe)進行相反的變換(huan)。
電路圖中的(de)(de)英文是(shi)簡寫的(de)(de)縮略語,有時(shi)是(shi)組合使用的(de)(de),ant是(shi)antter簡寫,是(shi)“天(tian)(tian)線”的(de)(de)意(yi)思(si),antsw是(shi)ant(天(tian)(tian)線)和sw(開關)的(de)(de)組合,其含義(yi)就(jiu)是(shi)天(tian)(tian)線開關。
電路板rt代表什么意思
Rt是(shi)可(ke)變電阻(zu),一般是(shi)指熱敏電阻(zu)或其它可(ke)變的電阻(zu),作用就是(shi)根據電阻(zu)周圍的溫度改變自身(shen)電阻(zu),從而調節整個電路(lu)的電阻(zu)。
其他電路板相關術語
VDD: 電(dian)(dian)源(yuan)電(dian)(dian)壓(ya)(單極(ji)器(qi)件;電(dian)(dian)源(yuan)電(dian)(dian)壓(ya)(4000系(xi)列(lie)數(shu)字電(dian)(dian) 路);漏極(ji)電(dian)(dian)壓(ya)(場效應管)。
VCC:電源電壓(ya)(雙極器件);電源電壓(ya)(74系列(lie)數字電路)。
VSS:地或(huo)電源負極。
VEE:負電壓供電;場效應管的源極(ji)(S)。
VPP:編程/擦除電壓。