熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)器(qi)正(zheng)是利用半導體的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)值(zhi)隨溫(wen)度(du)(du)明顯變化這(zhe)一特性(xing)制成的(de)熱(re)敏(min)(min)(min)元件。它(ta)是由(you)某些金屬氧化物按不(bu)同(tong)的(de)配方制成的(de)。在(zai)一定(ding)的(de)溫(wen)度(du)(du)范圍內，根據(ju)測量(liang)熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)阻(zu)值(zhi)的(de)變化，便可知被測介(jie)質(zhi)的(de)溫(wen)度(du)(du)變化。將(jiang)熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)安裝(zhuang)在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)使用時(shi)(shi)，熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)在(zai)環境溫(wen)度(du)(du)相同(tong)時(shi)(shi)，動(dong)作(zuo)時(shi)(shi)間隨著電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)的(de)增加而(er)急劇縮短;熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)在(zai)環境溫(wen)度(du)(du)相對較高時(shi)(shi)具有更短的(de)動(dong)作(zuo)時(shi)(shi)間和(he)較小(xiao)的(de)維持電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)及動(dong)作(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)。當(dang)(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)正(zheng)常工作(zuo)時(shi)(shi)，熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)溫(wen)度(du)(du)與室溫(wen)相近、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)很(hen)小(xiao)，串(chuan)聯在(zai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)中(zhong)不(bu)會阻(zu)礙電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)通(tong)過;而(er)當(dang)(dang)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)路(lu)因故障(zhang)而(er)出(chu)現過電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)時(shi)(shi)，熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)由(you)于(yu)發熱(re)功率增加導致溫(wen)度(du)(du)上升，當(dang)(dang)溫(wen)度(du)(du)超(chao)過開關溫(wen)度(du)(du)時(shi)(shi)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)瞬間會劇增，回路(lu)中(zhong)的(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)(liu)(liu)迅速(su)減(jian)小(xiao)到(dao)安全值(zhi)。熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)的(de)線性(xing)程度(du)(du)和(he)溫(wen)度(du)(du)精度(du)(du)可以通(tong)過選擇合(he)適的(de)材料和(he)加工工藝實現。寧波主板熱(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)生產(chan)商

負(fu)溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)的工作(zuo)原理：NTC泛指負(fu)溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)很大的半導體(ti)材料或元器件,所(suo)謂(wei)NTC熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)就是(shi)(shi)負(fu)溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)。負(fu)溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)是(shi)(shi)以(yi)氧(yang)(yang)(yang)化(hua)(hua)(hua)錳、氧(yang)(yang)(yang)化(hua)(hua)(hua)鉆、氧(yang)(yang)(yang)化(hua)(hua)(hua)鎳、氧(yang)(yang)(yang)化(hua)(hua)(hua)銅(tong)和氧(yang)(yang)(yang)化(hua)(hua)(hua)鋁等金(jin)屬氧(yang)(yang)(yang)化(hua)(hua)(hua)物為主要原料,采用(yong)陶瓷工藝制(zhi)造而成的。這些金(jin)屬氧(yang)(yang)(yang)化(hua)(hua)(hua)物材料都具有半導體(ti)性(xing)質,完全類(lei)似于儲、硅晶體(ti)材料,體(ti)內的載(zai)流子(zi)(電(dian)(dian)(dian)子(zi)和空穴)數(shu)(shu)(shu)目(mu)少,電(dian)(dian)(dian)阻(zu)(zu)較高;溫(wen)(wen)(wen)(wen)(wen)度(du)升高,體(ti)內載(zai)流子(zi)數(shu)(shu)(shu)目(mu)增加,自(zi)然電(dian)(dian)(dian)阻(zu)(zu)值降(jiang)低(di)。NTC熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)在室溫(wen)(wen)(wen)(wen)(wen)下(xia)的變(bian)化(hua)(hua)(hua)范圍(wei)在100~100000,Ω溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)為一2%6.5%。負(fu)溫(wen)(wen)(wen)(wen)(wen)度(du)系數(shu)(shu)(shu)熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)類(lei)型很多(duo),按溫(wen)(wen)(wen)(wen)(wen)度(du)范圍(wei)分(fen)為低(di)溫(wen)(wen)(wen)(wen)(wen)(-60~300℃)、中(zhong)溫(wen)(wen)(wen)(wen)(wen)(300-600℃、高溫(wen)(wen)(wen)(wen)(wen)(>600℃)三種(zhong),有靈敏(min)(min)(min)度(du)高、穩(wen)定性(xing)好、響應(ying)快、壽命長、價格低(di)等優點,普遍應(ying)用(yong)于需要定點測(ce)溫(wen)(wen)(wen)(wen)(wen)的溫(wen)(wen)(wen)(wen)(wen)度(du)自(zi)動控(kong)制(zhi)電(dian)(dian)(dian)路,如冰箱、空調(diao)、溫(wen)(wen)(wen)(wen)(wen)室等的溫(wen)(wen)(wen)(wen)(wen)控(kong)系統。佛山電(dian)(dian)(dian)磁爐(lu)熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)企業熱(re)(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)阻(zu)(zu)可通過(guo)多(duo)種(zhong)方式用(yong)于溫(wen)(wen)(wen)(wen)(wen)度(du)控(kong)制(zhi)和測(ce)量。

熱(re)敏(min)電阻(zu)的(de)(de)基本特(te)性：熱(re)敏(min)電阻(zu)的(de)(de)電阻(zu)－溫(wen)度(du)特(te)性可(ke)(ke)近(jin)似地用(yong)下式(shi)(shi)表示(shi)：R=R0exp{ B（1/T-1/T0)}：R：溫(wen)度(du)T(K）時(shi)(shi)的(de)(de)電阻(zu)值(zhi)(zhi)、Ro：溫(wen)度(du)T0、（K）時(shi)(shi)的(de)(de)電阻(zu)值(zhi)(zhi)、B:B值(zhi)(zhi)、T(K)=t(oC)+273.15。實際(ji)上，熱(re)敏(min)電阻(zu)的(de)(de)B值(zhi)(zhi)并非是恒定的(de)(de)，其變化大(da)小因材料構成而異，較(jiao)大(da)甚至可(ke)(ke)達5K/°C。因此在較(jiao)大(da)的(de)(de)溫(wen)度(du)范圍內(nei)應(ying)用(yong)式(shi)(shi)1時(shi)(shi)，將與實測(ce)值(zhi)(zhi)之(zhi)間(jian)存在一定誤差(cha)。此處，若將式(shi)(shi)1中的(de)(de)B值(zhi)(zhi)用(yong)式(shi)(shi)2所示(shi)的(de)(de)作為溫(wen)度(du)的(de)(de)函數(shu)計算時(shi)(shi)，則(ze)可(ke)(ke)降低與實測(ce)值(zhi)(zhi)之(zhi)間(jian)的(de)(de)誤差(cha)，可(ke)(ke)認為近(jin)似相(xiang)等。

PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)的(de)分類有哪些？PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)根(gen)據其(qi)材質的(de)不(bu)同分為：陶瓷(ci)PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)和(he)有機高分子PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)。PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)根(gen)據其(qi)用途的(de)不(bu)同分為：恒溫(wen)(wen)(wen)加熱(re)(re)(re)(re)(re)用PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)、過流保(bao)護(hu)用PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)、過熱(re)(re)(re)(re)(re)保(bao)護(hu)用PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)、溫(wen)(wen)(wen)度(du)(du)傳感用PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)、延時啟動(dong)用PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)。PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)按(an)結構及形(xing)狀分為：圓片形(xing)(片狀)、圓柱(zhu)形(xing)(柱(zhu)形(xing))、圓圈(quan)形(xing)(墊圈(quan)型(xing)）、矩片形(xing)（矩形(xing)）等多種形(xing)狀。PTC熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)按(an)溫(wen)(wen)(wen)度(du)(du)變化的(de)靈(ling)(ling)敏(min)(min)(min)(min)(min)度(du)(du)分為高靈(ling)(ling)敏(min)(min)(min)(min)(min)度(du)(du)型(xing)(突變型(xing))、低靈(ling)(ling)敏(min)(min)(min)(min)(min)度(du)(du)型(xing)(緩(huan)變型(xing)）熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)。由于熱(re)(re)(re)(re)(re)敏(min)(min)(min)(min)(min)電(dian)阻(zu)具有獨特(te)的(de)正溫(wen)(wen)(wen)度(du)(du)系數電(dian)阻(zu)特(te)性(xing)，因而極為適合用作過流保(bao)護(hu)器(qi)件。

熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)的特點(dian)：熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)是開發(fa)早、種(zhong)類多、發(fa)展較(jiao)成熟的敏(min)(min)(min)感元(yuan)器(qi)件。熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)由半導(dao)體(ti)(ti)陶瓷材(cai)料組成，熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)是用(yong)(yong)(yong)半導(dao)體(ti)(ti)材(cai)料，大(da)(da)多為負溫度(du)(du)系(xi)數，即阻(zu)(zu)值隨溫度(du)(du)增加(jia)而(er)降(jiang)低。熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)主要特點(dian)有靈敏(min)(min)(min)度(du)(du)較(jiao)高;工(gong)作(zuo)溫度(du)(du)范圍寬;體(ti)(ti)積小;使用(yong)(yong)(yong)方(fang)便;易加(jia)工(gong)成復雜的形狀，可大(da)(da)批量(liang)(liang)生(sheng)產(chan);穩定性好、過載能(neng)力強。由于半導(dao)體(ti)(ti)熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)有獨特的性能(neng)，所以在應(ying)用(yong)(yong)(yong)方(fang)面(mian)它不只可以作(zuo)為測量(liang)(liang)元(yuan)件，還(huan)可以作(zuo)為控制元(yuan)件和電(dian)(dian)(dian)(dian)路補償元(yuan)件。熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)普遍用(yong)(yong)(yong)于家用(yong)(yong)(yong)電(dian)(dian)(dian)(dian)器(qi)、電(dian)(dian)(dian)(dian)力工(gong)業、通(tong)訊科學(xue)、宇航等各個領域，發(fa)展前景極其廣(guang)闊(kuo)。熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)的制造工(gong)藝包(bao)括化學(xue)合成、燒結、鍍金等方(fang)法。唐山正溫度(du)(du)系(xi)數熱(re)(re)敏(min)(min)(min)電(dian)(dian)(dian)(dian)阻(zu)(zu)定做廠家

熱(re)敏(min)(min)電(dian)阻的(de)材料常常是(shi)多種化合(he)物的(de)混合(he)物。寧波主板熱(re)敏(min)(min)電(dian)阻生產商(shang)

熱(re)(re)敏(min)電阻(zu)的(de)(de)(de)(de)作用(yong)(yong)之(zhi)(zhi)過熱(re)(re)保(bao)(bao)護(hu)(hu)：過熱(re)(re)保(bao)(bao)護(hu)(hu)分直(zhi)接(jie)(jie)保(bao)(bao)護(hu)(hu)利間接(jie)(jie)保(bao)(bao)護(hu)(hu)。對小電流(liu)場(chang)合(he)(he)，可(ke)把熱(re)(re)敏(min)電阻(zu)傳感器(qi)(qi)(qi)直(zhi)接(jie)(jie)串(chuan)人負(fu)載中(zhong)，防止過熱(re)(re)損壞以(yi)(yi)保(bao)(bao)護(hu)(hu)器(qi)(qi)(qi)件，對大電流(liu)場(chang)合(he)(he)，可(ke)用(yong)(yong)于(yu)(yu)(yu)對繼電器(qi)(qi)(qi)、晶體管(guan)電路等的(de)(de)(de)(de)保(bao)(bao)護(hu)(hu)。例(li)如，在電動機(ji)的(de)(de)(de)(de)定(ding)子繞(rao)組中(zhong)嵌入突變型熱(re)(re)敏(min)電阻(zu)傳感器(qi)(qi)(qi)并與繼電器(qi)(qi)(qi)串(chuan)聯，當電動機(ji)過載時(shi)，定(ding)子電流(liu)增大，引起發熱(re)(re)。當溫(wen)(wen)度大于(yu)(yu)(yu)突變點時(shi)，電路中(zhong)的(de)(de)(de)(de)電流(liu)可(ke)以(yi)(yi)內十分之(zhi)(zhi)幾毫安突變為(wei)幾十毫安，因此繼電器(qi)(qi)(qi)動作，從而實現(xian)過熱(re)(re)保(bao)(bao)護(hu)(hu)。熱(re)(re)敏(min)電阻(zu)的(de)(de)(de)(de)作用(yong)(yong)之(zhi)(zhi)液(ye)面(mian)測量：給NTC熱(re)(re)敏(min)電阻(zu)傳感器(qi)(qi)(qi)施(shi)加一定(ding)的(de)(de)(de)(de)加熱(re)(re)電流(liu)，它(ta)的(de)(de)(de)(de)表面(mian)溫(wen)(wen)度將(jiang)(jiang)高于(yu)(yu)(yu)周圍的(de)(de)(de)(de)空氣溫(wen)(wen)度，此時(shi)它(ta)的(de)(de)(de)(de)阻(zu)值(zhi)較小。當液(ye)而高于(yu)(yu)(yu)它(ta)的(de)(de)(de)(de)安裝高度時(shi)，液(ye)體將(jiang)(jiang)帶走它(ta)的(de)(de)(de)(de)熱(re)(re)量，使之(zhi)(zhi)溫(wen)(wen)度下降、阻(zu)值(zhi)升高。判斷它(ta)的(de)(de)(de)(de)阻(zu)值(zhi)變化(hua)，就(jiu)可(ke)以(yi)(yi)知(zhi)道液(ye)面(mian)是(shi)否低于(yu)(yu)(yu)設定(ding)值(zhi)。汽車油箱中(zhong)的(de)(de)(de)(de)油位報(bao)警傳感器(qi)(qi)(qi)就(jiu)是(shi)利用(yong)(yong)以(yi)(yi)上原理制作的(de)(de)(de)(de)。寧波主板熱(re)(re)敏(min)電阻(zu)生(sheng)產商

麥柯泰(tai)姆(mu)電子(zi)技術(上(shang)海)有(you)限公司主要經營范圍是電子(zi)元(yuan)器(qi)(qi)件(jian)，擁有(you)一支專業(ye)技術團隊和(he)良(liang)好(hao)的(de)(de)(de)(de)市場(chang)口碑(bei)。麥柯泰(tai)姆(mu)電子(zi)致力于為(wei)(wei)(wei)客戶(hu)提供良(liang)好(hao)的(de)(de)(de)(de)溫(wen)度開關，溫(wen)度傳(chuan)感(gan)器(qi)(qi)，溫(wen)度保險絲(si)，溫(wen)度保護器(qi)(qi)，一切以(yi)用戶(hu)需求(qiu)為(wei)(wei)(wei)中心，深(shen)(shen)受廣(guang)大客戶(hu)的(de)(de)(de)(de)歡迎。公司秉持(chi)誠信(xin)為(wei)(wei)(wei)本的(de)(de)(de)(de)經營理(li)念，在(zai)電子(zi)元(yuan)器(qi)(qi)件(jian)深(shen)(shen)耕多(duo)(duo)年，以(yi)技術為(wei)(wei)(wei)先導，以(yi)自主產品(pin)為(wei)(wei)(wei)重點，發揮人才優勢(shi)，打造電子(zi)元(yuan)器(qi)(qi)件(jian)良(liang)好(hao)品(pin)牌。麥柯泰(tai)姆(mu)電子(zi)憑借(jie)創新的(de)(de)(de)(de)產品(pin)、專業(ye)的(de)(de)(de)(de)服務、眾多(duo)(duo)的(de)(de)(de)(de)成功案例積累起來的(de)(de)(de)(de)聲譽和(he)口碑(bei)，讓企業(ye)發展再上(shang)新高。

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