一、溫補晶振和普通晶振的區別有哪些
1、溫補晶振是通(tong)過其(qi)附加的(de)溫(wen)(wen)度(du)補償(chang)電路使周圍溫(wen)(wen)度(du)變(bian)化(hua)(hua)產生的(de)振(zhen)(zhen)蕩(dang)(dang)頻率變(bian)化(hua)(hua)量削減的(de)一種石(shi)英晶體振(zhen)(zhen)蕩(dang)(dang)器(qi)。它的(de)溫(wen)(wen)度(du)補償(chang)的(de)原(yuan)理(li)呢就(jiu)是通(tong)過改變(bian)振(zhen)(zhen)蕩(dang)(dang)回路中的(de)負載(zai)電容,使其(qi)隨溫(wen)(wen)度(du)變(bian)化(hua)(hua)來(lai)補償(chang)諧振(zhen)(zhen)器(qi)由于環境溫(wen)(wen)度(du)變(bian)化(hua)(hua)所產生的(de)頻率漂移。
2、普(pu)通晶振(zhen)是在石英晶體(ti)的(de)兩(liang)個(ge)(ge)(ge)極(ji)板上加(jia)(jia)一(yi)個(ge)(ge)(ge)電(dian)(dian)(dian)(dian)(dian)場,晶片會(hui)產生(sheng)機(ji)(ji)械(xie)變(bian)形(xing),對極(ji)板施加(jia)(jia)機(ji)(ji)械(xie)力使其變(bian)形(xing),又會(hui)在極(ji)板上產生(sheng)相(xiang)應的(de)電(dian)(dian)(dian)(dian)(dian)荷,這叫壓(ya)電(dian)(dian)(dian)(dian)(dian)效應。如果在兩(liang)個(ge)(ge)(ge)極(ji)板上加(jia)(jia)上交變(bian)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya),晶片便會(hui)產生(sheng)機(ji)(ji)械(xie)變(bian)形(xing)震(zhen)蕩,同時這種機(ji)(ji)械(xie)震(zhen)蕩還會(hui)產生(sheng)交變(bian)的(de)電(dian)(dian)(dian)(dian)(dian)場(比較的(de)微小),但是當外(wai)加(jia)(jia)交變(bian)的(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)頻率(lv)與晶片固有的(de)頻率(lv)(由其形(xing)狀和尺寸決(jue)定)相(xiang)等(deng)時,機(ji)(ji)械(xie)振(zhen)動的(de)幅度(du)會(hui)加(jia)(jia)劇,產生(sheng)交變(bian)電(dian)(dian)(dian)(dian)(dian)場也增大。
二、溫補晶振是有源還是無源
凡是需要提供電源電壓的都是有源晶振,它大致包括普通晶振、壓控晶振、溫補晶振、恒溫晶振。
溫(wen)補(bu)(bu)晶(jing)振(zhen)屬于有源晶(jing)振(zhen),它是在(zai)普通晶(jing)振(zhen)的基礎上(shang),加了一個(ge)溫(wen)度補(bu)(bu)償網絡,它主(zhu)要分(fen)為模擬(ni)溫(wen)補(bu)(bu)晶(jing)振(zhen)和數字溫(wen)補(bu)(bu)晶(jing)振(zhen)。
以上就是(shi)溫(wen)補晶(jing)(jing)振和普(pu)通晶(jing)(jing)振的(de)(de)區別(bie)有(you)哪些以及溫(wen)補晶(jing)(jing)振是(shi)有(you)源還是(shi)無源的(de)(de)內容(rong)介紹,希(xi)望幫助到您(nin),主頁還有(you)很多(duo)相關(guan)知識,歡迎點擊查看(kan)哦。