線(xian)性穩(wen)壓(ya)(ya)(ya)(ya)器(qi)使用(yong)在(zai)(zai)其線(xian)性區(qu)域內運行的(de)(de)晶(jing)體(ti)管(guan)或 FET，從應用(yong)的(de)(de)輸入(ru)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)中減(jian)去(qu)超額的(de)(de)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，產生經過調節的(de)(de)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)。所謂壓(ya)(ya)(ya)(ya)降(jiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，是指(zhi)穩(wen)壓(ya)(ya)(ya)(ya)器(qi)將(jiang)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)維持在(zai)(zai)其額定值上下 100mV 之內所需的(de)(de)輸入(ru)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)與(yu)(yu)輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)差額的(de)(de)較小(xiao)值。正輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)的(de)(de) LDO（低壓(ya)(ya)(ya)(ya)降(jiang)）穩(wen)壓(ya)(ya)(ya)(ya)器(qi)通常(chang)使用(yong)功率晶(jing)體(ti)管(guan)（也稱為(wei)傳遞(di)設(she)備）作為(wei) PNP.這種晶(jing)體(ti)管(guan)允許飽和(he)，所以穩(wen)壓(ya)(ya)(ya)(ya)器(qi)可(ke)以有(you)一(yi)個(ge)非常(chang)低的(de)(de)壓(ya)(ya)(ya)(ya)降(jiang)電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)，通常(chang)為(wei) 200mV 左右;與(yu)(yu)之相比，使用(yong) NPN 復合電(dian)(dian)(dian)(dian)(dian)源晶(jing)體(ti)管(guan)的(de)(de)傳統線(xian)性穩(wen)壓(ya)(ya)(ya)(ya)器(qi)的(de)(de)壓(ya)(ya)(ya)(ya)降(jiang)為(wei) 2V 左右。負輸出(chu) LDO 使用(yong) NPN 作為(wei)它的(de)(de)傳遞(di)設(she)備，其運行模式與(yu)(yu)正輸出(chu) LDO 的(de)(de) PNP設(she)備類似(si)。線(xian)性穩(wen)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)(dian)源由調整管(guan)、參考電(dian)(dian)(dian)(dian)(dian)壓(ya)(ya)(ya)(ya)、取樣電(dian)(dian)(dian)(dian)(dian)路、誤差放大電(dian)(dian)(dian)(dian)(dian)路等幾個(ge)基本部(bu)分(fen)組成。深圳市凱軒業(ye)電(dian)(dian)(dian)(dian)(dian)子(zi)。北京線(xian)性穩(wen)壓(ya)(ya)(ya)(ya)器(qi)的(de)(de)用(yong)途

對(dui)于嵌入(ru)式(shi)應用而言，NPN旁(pang)路晶體管(guan)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)是一(yi)種(zhong)(zhong)(zhong)不(bu)(bu)錯的(de)選擇，因(yin)為它(ta)(ta)的(de)壓(ya)(ya)(ya)差(cha)小，而且非常容易使(shi)(shi)用。不(bu)(bu)過這種(zhong)(zhong)(zhong)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)仍(reng)不(bu)(bu)適合具有很低(di)(di)壓(ya)(ya)(ya)差(cha)要(yao)求的(de)電池供電設備(bei)使(shi)(shi)用，因(yin)為它(ta)(ta)的(de)壓(ya)(ya)(ya)差(cha)不(bu)(bu)夠低(di)(di)。它(ta)(ta)的(de)高(gao)增益(yi)NPN旁(pang)路管(guan)可使(shi)(shi)接(jie)(jie)地電流(liu)穩(wen)(wen)定(ding)在幾個毫(hao)安，而且它(ta)(ta)的(de)公(gong)共發射極(ji)結構(gou)具有很低(di)(di)的(de)輸出阻(zu)抗。PNP 旁(pang)路晶體管(guan)是一(yi)種(zhong)(zhong)(zhong)低(di)(di)壓(ya)(ya)(ya)差(cha)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)，其中的(de)旁(pang)路元件就是PNP晶體管(guan)。它(ta)(ta)的(de)輸入(ru)輸出壓(ya)(ya)(ya)差(cha)一(yi)般(ban)在0.3到0.7V之間。因(yin)為壓(ya)(ya)(ya)差(cha)低(di)(di)，因(yin)此這種(zhong)(zhong)(zhong)PNP旁(pang)路晶體管(guan)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)非常適合電池供電的(de)嵌入(ru)式(shi)設備(bei)使(shi)(shi)用。不(bu)(bu)過它(ta)(ta)的(de)大接(jie)(jie)地電流(liu)會縮(suo)短電池的(de)壽(shou)命(ming)。另外，PNP晶體管(guan)增益(yi)較低(di)(di)，會形成數(shu)毫(hao)安的(de)不(bu)(bu)穩(wen)(wen)定(ding)接(jie)(jie)地電流(liu)。由于采用公(gong)共發射極(ji)結構(gou)，因(yin)此它(ta)(ta)的(de)輸出阻(zu)抗比較高(gao)，這意味著需要(yao)外接(jie)(jie)特定(ding)范圍容量和等效串聯電阻(zu)（ESR）的(de)電容才(cai)能(neng)夠穩(wen)(wen)定(ding)工作-自(zi)動化線性穩(wen)(wen)壓(ya)(ya)(ya)器(qi)采購線性穩(wen)(wen)壓(ya)(ya)(ya)器(qi)原(yuan)裝廠家直銷選凱(kai)軒業電子科(ke)技有限公(gong)司(si)。

時(shi)(shi)鐘(zhong)電(dian)(dian)路本(ben)身是(shi)(shi)(shi)不會控(kong)制什么東西(xi)，而是(shi)(shi)(shi)你通(tong)過(guo)程序讓單片機根據時(shi)(shi)鐘(zhong)來做相應的(de)(de)(de)工(gong)作。幾乎所有的(de)(de)(de)數字系統(tong)(tong)(tong)在(zai)處理(li)(li)信(xin)號都(dou)是(shi)(shi)(shi)按節(jie)(jie)(jie)拍(pai)(pai)一步(bu)(bu)一步(bu)(bu)地(di)進行(xing)的(de)(de)(de)，系統(tong)(tong)(tong)各(ge)部分(fen)也是(shi)(shi)(shi)按節(jie)(jie)(jie)拍(pai)(pai)做的(de)(de)(de)，要(yao)(yao)使(shi)電(dian)(dian)路的(de)(de)(de)各(ge)部分(fen)統(tong)(tong)(tong)一節(jie)(jie)(jie)拍(pai)(pai)就需(xu)要(yao)(yao)一個(ge)“時(shi)(shi)鐘(zhong)信(xin)號”，產(chan)生(sheng)這(zhe)個(ge)時(shi)(shi)鐘(zhong)信(xin)號的(de)(de)(de)電(dian)(dian)路就是(shi)(shi)(shi)時(shi)(shi)鐘(zhong)電(dian)(dian)路。時(shi)(shi)鐘(zhong)電(dian)(dian)路的(de)(de)(de)中心是(shi)(shi)(shi)個(ge)比較穩定的(de)(de)(de)振(zhen)蕩(dang)器（一般(ban)都(dou)用晶體振(zhen)蕩(dang)器），振(zhen)蕩(dang)器產(chan)生(sheng)的(de)(de)(de)是(shi)(shi)(shi)正弦波，頻率不一定是(shi)(shi)(shi)電(dian)(dian)路工(gong)作的(de)(de)(de)時(shi)(shi)鐘(zhong)頻率。所以要(yao)(yao)把(ba)這(zhe)正弦波進行(xing)分(fen)頻，處理(li)(li)，形成(cheng)時(shi)(shi)鐘(zhong)脈沖(chong)，然后分(fen)配(pei)到需(xu)要(yao)(yao)的(de)(de)(de)地(di)方(fang)。讓系統(tong)(tong)(tong)各(ge)部分(fen)工(gong)作時(shi)(shi)使(shi)用。

線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)的(de)(de)作(zuo)(zuo)用解析線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)可實現一個(ge)可變電(dian)(dian)阻(zu)器(qi)以(yi)調節輸出(chu)電(dian)(dian)壓(ya) 線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)作(zuo)(zuo)用線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)的(de)(de)突出(chu)優點是具有較(jiao)(jiao)低(di)的(de)(de)成(cheng)本，較(jiao)(jiao)低(di)的(de)(de)噪(zao)聲和較(jiao)(jiao)低(di)的(de)(de)靜(jing)態(tai)電(dian)(dian)流。它的(de)(de)外面器(qi)件也(ye)很少(shao)，通(tong)(tong)常只有一兩個(ge)旁(pang)路電(dian)(dian)容(rong)。新(xin)(xin)型線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)可達到以(yi)下指標(biao)：30μV 輸出(chu)噪(zao)聲、60dB PSRR、6μA 靜(jing)態(tai)電(dian)(dian)流及100mV的(de)(de)壓(ya)差。線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)能夠實現這些(xie)特(te)性(xing)(xing)(xing)的(de)(de)主(zhu)要原(yuan)因在(zai)于內部調整管(guan)(guan)采用了(le)P溝道場(chang)效(xiao)應管(guan)(guan)，而不(bu)(bu)是通(tong)(tong)常線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)中的(de)(de)PNP晶體管(guan)(guan)。深(shen)圳市(shi)凱軒業科技有限公(gong)司(si)在(zai)同(tong)行業領域(yu)中，一直(zhi)處在(zai)一個(ge)不(bu)(bu)斷銳(rui)意進取(qu)，不(bu)(bu)斷制造創新(xin)(xin)的(de)(de)市(shi)場(chang)高度，多(duo)年(nian)以(yi)來(lai)致力于發(fa)(fa)展富有創新(xin)(xin)價(jia)值(zhi)理念的(de)(de)產品(pin)標(biao)準，在(zai)廣(guang)東(dong)省等地區(qu)的(de)(de)電(dian)(dian)子(zi)元器(qi)件中始終保持良好的(de)(de)商(shang)業口(kou)碑，成(cheng)績(ji)讓我(wo)們(men)喜悅，但不(bu)(bu)會讓我(wo)們(men)止步(bu)，殘酷的(de)(de)市(shi)場(chang)磨(mo)煉了(le)我(wo)們(men)堅強不(bu)(bu)屈的(de)(de)意志深(shen)圳市(shi)凱軒業電(dian)(dian)子(zi)有限公(gong)司(si)是一家(jia)專業設計研發(fa)(fa)線性(xing)(xing)(xing)穩(wen)(wen)壓(ya)器(qi)，廠家(jia)直(zhi)銷，價(jia)格(ge)優勢。

由于(yu)(yu)(yu)P溝(gou)(gou)(gou)道(dao)FET穩壓(ya)(ya)(ya)器(qi)具(ju)有(you)較低(di)(di)(di)的(de)(de)壓(ya)(ya)(ya)差(cha)和(he)接(jie)地(di)電(dian)(dian)流(liu)，因此被廣大(da)用(yong)(yong)于(yu)(yu)(yu)許多(duo)電(dian)(dian)池(chi)供電(dian)(dian)的(de)(de)設備(bei)。該類型(xing)穩壓(ya)(ya)(ya)器(qi)將(jiang)P溝(gou)(gou)(gou)道(dao)FET用(yong)(yong)作它(ta)的(de)(de)旁路元件。這(zhe)種穩壓(ya)(ya)(ya)器(qi)的(de)(de)電(dian)(dian)壓(ya)(ya)(ya)差(cha)可以很(hen)(hen)(hen)低(di)(di)(di)，因為很(hen)(hen)(hen)容易通過調整(zheng)FET尺寸將(jiang)漏-源阻抗調整(zheng)到較低(di)(di)(di)值。另一個有(you)用(yong)(yong)的(de)(de)特性(xing)是(shi)低(di)(di)(di)的(de)(de)接(jie)地(di)電(dian)(dian)流(liu)，因為P溝(gou)(gou)(gou)道(dao)FET的(de)(de)“柵(zha)(zha)極(ji)(ji)電(dian)(dian)流(liu)”很(hen)(hen)(hen)低(di)(di)(di)。然而，由于(yu)(yu)(yu) P溝(gou)(gou)(gou)道(dao)FET具(ju)有(you)相對大(da)的(de)(de)柵(zha)(zha)極(ji)(ji)電(dian)(dian)容，因此它(ta)需要外(wai)接(jie)具(ju)有(you)特定范圍容量與ESR的(de)(de)電(dian)(dian)容才(cai)能穩定工(gong)作。N溝(gou)(gou)(gou)道(dao)FET穩壓(ya)(ya)(ya)器(qi)非(fei)常適合(he)那些要求低(di)(di)(di)壓(ya)(ya)(ya)差(cha)、低(di)(di)(di)接(jie)地(di)電(dian)(dian)流(liu)和(he)高負載(zai)電(dian)(dian)流(liu)的(de)(de)設備(bei)使用(yong)(yong)。用(yong)(yong)于(yu)(yu)(yu)旁路管(guan)采用(yong)(yong)的(de)(de)是(shi)N溝(gou)(gou)(gou)道(dao)FET，因此這(zhe)種穩壓(ya)(ya)(ya)器(qi)的(de)(de)壓(ya)(ya)(ya)差(cha)和(he)接(jie)地(di)電(dian)(dian)流(liu)都(dou)很(hen)(hen)(hen)低(di)(di)(di)。雖(sui)然它(ta)也需要外(wai)接(jie)電(dian)(dian)容才(cai)能穩定工(gong)作，但電(dian)(dian)容值不用(yong)(yong)很(hen)(hen)(hen)大(da)，ESR也不重要。N溝(gou)(gou)(gou)道(dao)FET穩壓(ya)(ya)(ya)器(qi)需要充(chong)電(dian)(dian)泵來建立(li)柵(zha)(zha)極(ji)(ji)偏置電(dian)(dian)壓(ya)(ya)(ya)，因此電(dian)(dian)路相對復雜一些。幸運的(de)(de)是(shi)，相同負載(zai)電(dian)(dian)流(liu)下(xia)N溝(gou)(gou)(gou)道(dao)FET尺寸較多(duo)時(shi)可比(bi)P溝(gou)(gou)(gou)道(dao)FET小50%.kxy線性(xing)穩壓(ya)(ya)(ya)電(dian)(dian)源，是(shi)指調整(zheng)管(guan)工(gong)作在線性(xing)狀態下(xia)的(de)(de)直流(liu)穩壓(ya)(ya)(ya)電(dian)(dian)源。選(xuan)深(shen)圳市凱軒業電(dian)(dian)子。自動化(hua)線性(xing)穩壓(ya)(ya)(ya)器(qi)采購

線(xian)性穩壓器，就選深圳市凱軒業科技有限公司。北京線(xian)性穩壓器的用途

時(shi)鐘(zhong)(zhong)(zhong)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)器(qi)的(de)作(zuo)用(yong)(yong)是什么？時(shi)鐘(zhong)(zhong)(zhong)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)電(dian)路(lu)中精(jing)確地確定(ding)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)頻(pin)率，它與所(suo)屬(shu)電(dian)路(lu)系統中的(de)主(zhu)芯(xin)(xin)片(pian)內(nei)(nei)部(bu)的(de)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)電(dian)路(lu)配(pei)合，共同組成“石英晶(jing)體(ti)諧(xie)振(zhen)(zhen)(zhen)器(qi)”（簡“晶(jing)振(zhen)(zhen)(zhen)”），產(chan)生主(zhu)板上(shang)各個(ge)系統所(suo)必需的(de)時(shi)鐘(zhong)(zhong)(zhong)信號。工(gong)作(zuo)時(shi)，首先由主(zhu)芯(xin)(xin)片(pian)內(nei)(nei)部(bu)的(de)“多諧(xie)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)器(qi)”產(chan)生一個(ge)頻(pin)譜很寬的(de)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)，這個(ge)包含有多種“諧(xie)頻(pin)”的(de)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)信號從主(zhu)芯(xin)(xin)片(pian)輸(shu)出后(hou)，直接加到晶(jing)體(ti)的(de)兩端。通(tong)過(guo)晶(jing)體(ti)的(de)“精(jing)確選頻(pin)”作(zuo)用(yong)(yong)，確定(ding)一個(ge)時(shi)鐘(zhong)(zhong)(zhong)頻(pin)率之后(hou)，再反饋回芯(xin)(xin)片(pian)內(nei)(nei)部(bu)去控(kong)制“多諧(xie)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)器(qi)”的(de)振(zhen)(zhen)(zhen)蕩(dang)(dang)(dang)(dang)(dang)頻(pin)率。這樣，整個(ge)時(shi)鐘(zhong)(zhong)(zhong)發生器(qi)就在晶(jing)體(ti)選定(ding)的(de)頻(pin)率上(shang)工(gong)作(zuo)，產(chan)生一個(ge)頻(pin)率穩定(ding)、幅度恒定(ding)的(de)時(shi)鐘(zhong)(zhong)(zhong)脈沖，提供給主(zhu)芯(xin)(xin)片(pian)內(nei)(nei)部(bu)的(de)各個(ge)系統。北京線性穩壓器(qi)的(de)用(yong)(yong)途(tu)

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