固定(ding)(ding)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)選擇方法：電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)額(e)定(ding)(ding)工(gong)(gong)作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓(ya)的(de)(de)(de)(de)確定(ding)(ding)：電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)工(gong)(gong)作(zuo)(zuo)電(dian)(dian)(dian)(dian)壓(ya)應(ying)低(di)于(yu)額(e)定(ding)(ding)電(dian)(dian)(dian)(dian)壓(ya)10%～20%。要注(zhu)意通過(guo)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)交流電(dian)(dian)(dian)(dian)壓(ya)和電(dian)(dian)(dian)(dian)流，不(bu)應(ying)超(chao)過(guo)給出的(de)(de)(de)(de)額(e)定(ding)(ding)值。注(zhu)意電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)溫(wen)度(du)穩定(ding)(ding)性及(ji)損耗：用(yong)(yong)于(yu)諧振電(dian)(dian)(dian)(dian)路(lu)中的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)，必須(xu)選用(yong)(yong)誤差小的(de)(de)(de)(de)電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)，其(qi)(qi)(qi)溫(wen)度(du)系數也應(ying)選小一些的(de)(de)(de)(de)，以免(mian)影響(xiang)諧振特(te)性。電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)特(te)性比(bi)電(dian)(dian)(dian)(dian)阻(zu)器(qi)(qi)要復雜得多，電(dian)(dian)(dian)(dian)路(lu)分(fen)析(xi)(xi)中，對電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)作(zuo)(zuo)用(yong)(yong)的(de)(de)(de)(de)分(fen)析(xi)(xi)也相當困難(nan)。掌握電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)特(te)性是分(fen)析(xi)(xi)有電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)電(dian)(dian)(dian)(dian)路(lu)參與電(dian)(dian)(dian)(dian)路(lu)工(gong)(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)的(de)(de)(de)(de)關鍵(jian)所在，很多情(qing)況下對電(dian)(dian)(dian)(dian)路(lu)工(gong)(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)的(de)(de)(de)(de)分(fen)析(xi)(xi)不(bu)正確或者根本(ben)無從下手，其(qi)(qi)(qi)主要原(yuan)(yuan)因(yin)就(jiu)是對元器(qi)(qi)件的(de)(de)(de)(de)特(te)性不(bu)了解，所以掌握電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)主要特(te)性及(ji)其(qi)(qi)(qi)相應(ying)變化，是分(fen)析(xi)(xi)有電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)參與電(dian)(dian)(dian)(dian)路(lu)工(gong)(gong)作(zuo)(zuo)原(yuan)(yuan)理(li)的(de)(de)(de)(de)基礎。電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)使用(yong)(yong)環境(jing)應(ying)該(gai)避免(mian)過(guo)高(gao)(gao)溫(wen)度(du)、過(guo)高(gao)(gao)濕度(du)和過(guo)強電(dian)(dian)(dian)(dian)磁場(chang)。江(jiang)蘇(su)rvt電(dian)(dian)(dian)(dian)解電(dian)(dian)(dian)(dian)容(rong)(rong)(rong)(rong)(rong)(rong)哪家好

貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)顏(yan)色，常(chang)規見得多(duo)的(de)(de)(de)(de)就是比(bi)紙板箱(xiang)淺一(yi)點的(de)(de)(de)(de)黃，和青灰色，這(zhe)在具(ju)體的(de)(de)(de)(de)生產(chan)(chan)過程中會有(you)產(chan)(chan)生不同差異。貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)命名所包(bao)含(han)的(de)(de)(de)(de)參(can)數(shu)有(you)貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)尺(chi)寸、做這(zhe)種(zhong)貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)用(yong)(yong)的(de)(de)(de)(de)材質、要(yao)求(qiu)(qiu)(qiu)達到(dao)的(de)(de)(de)(de)精度、要(yao)求(qiu)(qiu)(qiu)的(de)(de)(de)(de)電(dian)(dian)壓(ya)、要(yao)求(qiu)(qiu)(qiu)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量、端頭的(de)(de)(de)(de)要(yao)求(qiu)(qiu)(qiu)以(yi)及包(bao)裝的(de)(de)(de)(de)要(yao)求(qiu)(qiu)(qiu)。一(yi)般(ban)訂購貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)需提供的(de)(de)(de)(de)參(can)數(shu)要(yao)有(you)尺(chi)寸的(de)(de)(de)(de)大小、要(yao)求(qiu)(qiu)(qiu)的(de)(de)(de)(de)精度、電(dian)(dian)壓(ya)的(de)(de)(de)(de)要(yao)求(qiu)(qiu)(qiu)、容(rong)(rong)(rong)(rong)量值(zhi)、以(yi)及要(yao)求(qiu)(qiu)(qiu)的(de)(de)(de)(de)品牌即可(ke)。貼(tie)片電(dian)(dian)容(rong)(rong)(rong)(rong)：可(ke)分為無(wu)極(ji)(ji)(ji)性和有(you)極(ji)(ji)(ji)性兩類，無(wu)極(ji)(ji)(ji)性電(dian)(dian)容(rong)(rong)(rong)(rong)下述兩類封裝很常(chang)見，即0805、0603；而(er)有(you)極(ji)(ji)(ji)性電(dian)(dian)容(rong)(rong)(rong)(rong)也(ye)就是我(wo)們平時(shi)所稱的(de)(de)(de)(de)電(dian)(dian)解(jie)電(dian)(dian)容(rong)(rong)(rong)(rong)，一(yi)般(ban)我(wo)們平時(shi)用(yong)(yong)的(de)(de)(de)(de)至(zhi)多(duo)的(de)(de)(de)(de)為鋁電(dian)(dian)解(jie)電(dian)(dian)容(rong)(rong)(rong)(rong)。固(gu)定電(dian)(dian)容(rong)(rong)(rong)(rong)器電(dian)(dian)容(rong)(rong)(rong)(rong)可(ke)以(yi)用(yong)(yong)來制(zhi)作電(dian)(dian)容(rong)(rong)(rong)(rong)式電(dian)(dian)流(liu)表。

電(dian)(dian)容(rong)(rong)(rong)的(de)性能(neng)(neng)可(ke)以(yi)通(tong)過(guo)以(yi)下(xia)方式進(jin)行測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)和評(ping)估：1.電(dian)(dian)容(rong)(rong)(rong)值測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)：通(tong)過(guo)使用(yong)電(dian)(dian)橋、LCR表(biao)等(deng)測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)儀器，測(ce)(ce)(ce)(ce)量電(dian)(dian)容(rong)(rong)(rong)器的(de)電(dian)(dian)容(rong)(rong)(rong)值，以(yi)檢(jian)驗其(qi)是(shi)否符(fu)合規定(ding)的(de)標(biao)準(zhun)值。2.電(dian)(dian)容(rong)(rong)(rong)損(sun)耗測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)：通(tong)過(guo)測(ce)(ce)(ce)(ce)量電(dian)(dian)容(rong)(rong)(rong)器的(de)損(sun)耗角正(zheng)切等(deng)參(can)數(shu)(shu)，評(ping)估其(qi)內(nei)部能(neng)(neng)量損(sun)耗情況，以(yi)判(pan)斷(duan)(duan)電(dian)(dian)容(rong)(rong)(rong)器的(de)能(neng)(neng)量轉換效率。3.電(dian)(dian)容(rong)(rong)(rong)溫(wen)度測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)：通(tong)過(guo)將電(dian)(dian)容(rong)(rong)(rong)器置于不(bu)同(tong)溫(wen)度環境(jing)下(xia)，測(ce)(ce)(ce)(ce)量其(qi)電(dian)(dian)容(rong)(rong)(rong)值和損(sun)耗角正(zheng)切等(deng)參(can)數(shu)(shu)的(de)變化(hua)，以(yi)評(ping)估其(qi)溫(wen)度系數(shu)(shu)和耐溫(wen)性能(neng)(neng)。4.電(dian)(dian)容(rong)(rong)(rong)壽(shou)命測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)：通(tong)過(guo)對電(dian)(dian)容(rong)(rong)(rong)器進(jin)行長時間(jian)的(de)工(gong)作(zuo)測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)，評(ping)估其(qi)使用(yong)壽(shou)命和穩定(ding)性能(neng)(neng)，以(yi)判(pan)斷(duan)(duan)其(qi)適用(yong)于長期使用(yong)的(de)場合。5.電(dian)(dian)容(rong)(rong)(rong)安(an)全性測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)：通(tong)過(guo)對電(dian)(dian)容(rong)(rong)(rong)器的(de)耐壓(ya)(ya)、耐電(dian)(dian)流等(deng)性能(neng)(neng)進(jin)行測(ce)(ce)(ce)(ce)試(shi)(shi)(shi)，評(ping)估其(qi)安(an)全性能(neng)(neng)，以(yi)判(pan)斷(duan)(duan)其(qi)是(shi)否適用(yong)于高(gao)壓(ya)(ya)、高(gao)電(dian)(dian)流等(deng)特殊場合。

電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量(liang)(liang)可以(yi)(yi)(yi)通過以(yi)(yi)(yi)下公式計(ji)算(suan)(suan)：C=Q/V。其中，C表示電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量(liang)(liang)，單位(wei)是(shi)(shi)法拉（F）；Q表示電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)所儲(chu)存(cun)(cun)(cun)的(de)(de)(de)(de)電(dian)(dian)(dian)荷(he)量(liang)(liang)，單位(wei)是(shi)(shi)庫侖（C）；V表示電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)兩極間的(de)(de)(de)(de)電(dian)(dian)(dian)勢差(cha)，單位(wei)是(shi)(shi)伏特（V）。如果已知電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)電(dian)(dian)(dian)勢差(cha)和所儲(chu)存(cun)(cun)(cun)的(de)(de)(de)(de)電(dian)(dian)(dian)荷(he)量(liang)(liang)，就可以(yi)(yi)(yi)通過上述公式計(ji)算(suan)(suan)出電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量(liang)(liang)。如果已知電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)的(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)值和所接入(ru)的(de)(de)(de)(de)電(dian)(dian)(dian)路(lu)(lu)，也可以(yi)(yi)(yi)通過電(dian)(dian)(dian)路(lu)(lu)公式計(ji)算(suan)(suan)出電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)器(qi)(qi)所儲(chu)存(cun)(cun)(cun)的(de)(de)(de)(de)電(dian)(dian)(dian)荷(he)量(liang)(liang)和電(dian)(dian)(dian)勢差(cha)，然后再帶(dai)入(ru)上述公式計(ji)算(suan)(suan)出電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量(liang)(liang)。需要注意(yi)的(de)(de)(de)(de)是(shi)(shi)，電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)的(de)(de)(de)(de)容(rong)(rong)(rong)(rong)量(liang)(liang)是(shi)(shi)一個相對的(de)(de)(de)(de)概念，它取(qu)決(jue)于所接入(ru)的(de)(de)(de)(de)電(dian)(dian)(dian)路(lu)(lu)和工(gong)作條件(jian)。在(zai)實際使用中，需要根據(ju)具體情況選擇合(he)適的(de)(de)(de)(de)電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)容(rong)(rong)(rong)(rong)量(liang)(liang)，以(yi)(yi)(yi)保證電(dian)(dian)(dian)路(lu)(lu)的(de)(de)(de)(de)正常工(gong)作和性能(neng)。電(dian)(dian)(dian)容(rong)(rong)(rong)(rong)是(shi)(shi)一種儲(chu)存(cun)(cun)(cun)電(dian)(dian)(dian)荷(he)的(de)(de)(de)(de)元件(jian)，廣泛應用于電(dian)(dian)(dian)子電(dian)(dian)(dian)路(lu)(lu)中。

平行(xing)板(ban)電容(rong)(rong)(rong)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)的(de)(de)(de)結(jie)(jie)構設計：考慮到盡量不破壞土(tu)壤(rang)的(de)(de)(de)結(jie)(jie)構狀況，根據平行(xing)板(ban)電容(rong)(rong)(rong)器(qi)(qi)(qi)的(de)(de)(de)原理(li)，設計了(le)(le)平行(xing)板(ban)電容(rong)(rong)(rong)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)。為(wei)了(le)(le)避免(mian)外界電磁(ci)波和自(zi)身(shen)邊(bian)緣(yuan)效應的(de)(de)(de)影響，采用(yong)了(le)(le)全屏蔽(bi)的(de)(de)(de)方(fang)法(fa)，即(ji)把(ba)1對正(zheng)對的(de)(de)(de)平行(xing)板(ban)電容(rong)(rong)(rong)器(qi)(qi)(qi)放在封閉(bi)的(de)(de)(de)立方(fang)體(ti)金(jin)屬(shu)殼體(ti)內(nei)部，屏蔽(bi)罩接(jie)(jie)地。其中2個(ge)金(jin)屬(shu)極(ji)(ji)板(ban)的(de)(de)(de)尺(chi)寸均為(wei)80mm×80mm，極(ji)(ji)板(ban)間距為(wei)80mm。由于(yu)平行(xing)板(ban)電容(rong)(rong)(rong)器(qi)(qi)(qi)電力(li)線有邊(bian)緣(yuan)效應，所(suo)以在測試(shi)土(tu)壤(rang)水(shui)分時，用(yong)取土(tu)器(qi)(qi)(qi)取傳(chuan)感(gan)(gan)器(qi)(qi)(qi)容(rong)(rong)(rong)積大小(xiao)的(de)(de)(de)土(tu)壤(rang)，讓土(tu)樣(yang)完全充滿(man)槽(cao)體(ti)，保證土(tu)樣(yang)全部處于(yu)平行(xing)板(ban)電容(rong)(rong)(rong)器(qi)(qi)(qi)的(de)(de)(de)平行(xing)電力(li)線均勻電場中，以減小(xiao)傳(chuan)感(gan)(gan)器(qi)(qi)(qi)結(jie)(jie)構造成(cheng)的(de)(de)(de)誤差。電容(rong)(rong)(rong)的(de)(de)(de)極(ji)(ji)性需要(yao)注(zhu)意，有正(zheng)負極(ji)(ji)之分，使用(yong)時需根據標(biao)識接(jie)(jie)線。廣州CBB電容(rong)(rong)(rong)器(qi)(qi)(qi)

電(dian)容(rong)(rong)的壽命與工(gong)(gong)作溫(wen)度、電(dian)壓(ya)等因(yin)素有關，需(xu)要注意使用環境和工(gong)(gong)作條件。江蘇rvt電(dian)解(jie)電(dian)容(rong)(rong)哪家好(hao)

NP0電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器(qi)是電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)和介(jie)質(zhi)損(sun)耗很穩定的(de)(de)(de)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器(qi)之(zhi)一。在(zai)溫度從-55℃到125℃時容(rong)(rong)(rong)(rong)(rong)量(liang)變(bian)(bian)化為0±30ppm/℃，電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)隨(sui)頻(pin)率(lv)的(de)(de)(de)變(bian)(bian)化小于(yu)(yu)±0.3ΔC。NP0電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)的(de)(de)(de)漂移或滯后小于(yu)(yu)±0.05%，相對大(da)于(yu)(yu)±2%的(de)(de)(de)薄膜(mo)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)來說是可(ke)以忽略(lve)不(bu)(bu)計(ji)的(de)(de)(de)。其典型的(de)(de)(de)容(rong)(rong)(rong)(rong)(rong)量(liang)相對使用壽(shou)命的(de)(de)(de)變(bian)(bian)化小于(yu)(yu)±0.1%。NP0電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器(qi)隨(sui)封(feng)裝形式不(bu)(bu)同其電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)量(liang)和介(jie)質(zhi)損(sun)耗隨(sui)頻(pin)率(lv)變(bian)(bian)化的(de)(de)(de)特性也不(bu)(bu)同，大(da)封(feng)裝尺寸的(de)(de)(de)要比小封(feng)裝尺寸的(de)(de)(de)頻(pin)率(lv)特性好(hao)。下表給出了NP0電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器(qi)可(ke)選取的(de)(de)(de)容(rong)(rong)(rong)(rong)(rong)量(liang)范圍(wei)。NP0電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)器(qi)適合(he)用于(yu)(yu)振蕩(dang)器(qi)、諧振器(qi)的(de)(de)(de)槽路(lu)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)，以及高頻(pin)電(dian)(dian)路(lu)中的(de)(de)(de)耦(ou)合(he)電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)。江蘇rvt電(dian)(dian)解電(dian)(dian)容(rong)(rong)(rong)(rong)(rong)哪家(jia)好(hao)

本文來自沈陽喜納(na)多采(cai)暖工程有限(xian)公司：//zjlong.cn/Article/1e399862.html