線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)使(shi)用(yong)在其(qi)(qi)線(xian)性(xing)區域內(nei)運行的(de)(de)晶(jing)(jing)體(ti)(ti)(ti)管(guan)或 FET，從應用(yong)的(de)(de)輸(shu)(shu)(shu)入電(dian)壓(ya)(ya)(ya)中(zhong)減去(qu)超額(e)的(de)(de)電(dian)壓(ya)(ya)(ya)，產生經過調(diao)(diao)節的(de)(de)輸(shu)(shu)(shu)出(chu)電(dian)壓(ya)(ya)(ya)。所謂壓(ya)(ya)(ya)降(jiang)(jiang)電(dian)壓(ya)(ya)(ya)，是指穩(wen)(wen)壓(ya)(ya)(ya)器(qi)將(jiang)輸(shu)(shu)(shu)出(chu)電(dian)壓(ya)(ya)(ya)維(wei)持在其(qi)(qi)額(e)定值上(shang)下 100mV 之內(nei)所需的(de)(de)輸(shu)(shu)(shu)入電(dian)壓(ya)(ya)(ya)與(yu)輸(shu)(shu)(shu)出(chu)電(dian)壓(ya)(ya)(ya)差額(e)的(de)(de)較小(xiao)值。正(zheng)輸(shu)(shu)(shu)出(chu)電(dian)壓(ya)(ya)(ya)的(de)(de) LDO（低(di)壓(ya)(ya)(ya)降(jiang)(jiang)）穩(wen)(wen)壓(ya)(ya)(ya)器(qi)通常使(shi)用(yong)功率晶(jing)(jing)體(ti)(ti)(ti)管(guan)（也稱(cheng)為傳遞設備）作(zuo)為 PNP.這種晶(jing)(jing)體(ti)(ti)(ti)管(guan)允許飽和(he)，所以(yi)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)可以(yi)有一(yi)個(ge)非常低(di)的(de)(de)壓(ya)(ya)(ya)降(jiang)(jiang)電(dian)壓(ya)(ya)(ya)，通常為 200mV 左右;與(yu)之相比，使(shi)用(yong) NPN 復(fu)合電(dian)源晶(jing)(jing)體(ti)(ti)(ti)管(guan)的(de)(de)傳統線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)的(de)(de)壓(ya)(ya)(ya)降(jiang)(jiang)為 2V 左右。負輸(shu)(shu)(shu)出(chu) LDO 使(shi)用(yong) NPN 作(zuo)為它的(de)(de)傳遞設備，其(qi)(qi)運行模(mo)式與(yu)正(zheng)輸(shu)(shu)(shu)出(chu) LDO 的(de)(de) PNP設備類似。線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)(ya)電(dian)源由調(diao)(diao)整管(guan)、參(can)考電(dian)壓(ya)(ya)(ya)、取樣(yang)電(dian)路、誤差放(fang)大電(dian)路等幾個(ge)基本(ben)部分組成。深圳(zhen)市凱(kai)軒業(ye)電(dian)子。北京線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)(ya)器(qi)的(de)(de)用(yong)途

對于(yu)嵌入式應用(yong)而(er)言，NPN旁路(lu)晶(jing)體(ti)管(guan)穩(wen)(wen)壓(ya)(ya)器是一種(zhong)不(bu)錯的(de)(de)(de)(de)(de)選擇(ze)，因為它(ta)的(de)(de)(de)(de)(de)壓(ya)(ya)差(cha)(cha)(cha)小(xiao)，而(er)且(qie)非(fei)常容易使用(yong)。不(bu)過這種(zhong)穩(wen)(wen)壓(ya)(ya)器仍不(bu)適(shi)合(he)具有很(hen)低(di)(di)壓(ya)(ya)差(cha)(cha)(cha)要(yao)求的(de)(de)(de)(de)(de)電(dian)池供(gong)電(dian)設備(bei)使用(yong)，因為它(ta)的(de)(de)(de)(de)(de)壓(ya)(ya)差(cha)(cha)(cha)不(bu)夠低(di)(di)。它(ta)的(de)(de)(de)(de)(de)高(gao)增益(yi)NPN旁路(lu)管(guan)可使接地(di)(di)電(dian)流穩(wen)(wen)定(ding)在幾個毫安(an)，而(er)且(qie)它(ta)的(de)(de)(de)(de)(de)公(gong)(gong)(gong)共發射(she)極結構(gou)具有很(hen)低(di)(di)的(de)(de)(de)(de)(de)輸(shu)(shu)出(chu)阻抗(kang)。PNP 旁路(lu)晶(jing)體(ti)管(guan)是一種(zhong)低(di)(di)壓(ya)(ya)差(cha)(cha)(cha)穩(wen)(wen)壓(ya)(ya)器，其中(zhong)的(de)(de)(de)(de)(de)旁路(lu)元件就(jiu)是PNP晶(jing)體(ti)管(guan)。它(ta)的(de)(de)(de)(de)(de)輸(shu)(shu)入輸(shu)(shu)出(chu)壓(ya)(ya)差(cha)(cha)(cha)一般在0.3到0.7V之間。因為壓(ya)(ya)差(cha)(cha)(cha)低(di)(di)，因此這種(zhong)PNP旁路(lu)晶(jing)體(ti)管(guan)穩(wen)(wen)壓(ya)(ya)器非(fei)常適(shi)合(he)電(dian)池供(gong)電(dian)的(de)(de)(de)(de)(de)嵌入式設備(bei)使用(yong)。不(bu)過它(ta)的(de)(de)(de)(de)(de)大接地(di)(di)電(dian)流會(hui)縮短電(dian)池的(de)(de)(de)(de)(de)壽命。另外，PNP晶(jing)體(ti)管(guan)增益(yi)較(jiao)低(di)(di)，會(hui)形成(cheng)數(shu)毫安(an)的(de)(de)(de)(de)(de)不(bu)穩(wen)(wen)定(ding)接地(di)(di)電(dian)流。由于(yu)采用(yong)公(gong)(gong)(gong)共發射(she)極結構(gou)，因此它(ta)的(de)(de)(de)(de)(de)輸(shu)(shu)出(chu)阻抗(kang)比較(jiao)高(gao)，這意味著需要(yao)外接特(te)定(ding)范圍容量和(he)等效串聯電(dian)阻（ESR）的(de)(de)(de)(de)(de)電(dian)容才能夠穩(wen)(wen)定(ding)工作-自動化(hua)線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)器采購線(xian)性(xing)穩(wen)(wen)壓(ya)(ya)器原裝(zhuang)廠家直銷選凱軒業電(dian)子(zi)科(ke)技有限公(gong)(gong)(gong)司(si)。

時(shi)(shi)鐘(zhong)(zhong)(zhong)電(dian)路(lu)本身是(shi)(shi)(shi)不會控制(zhi)什么東(dong)西，而是(shi)(shi)(shi)你(ni)通過(guo)程(cheng)序讓單片機根據時(shi)(shi)鐘(zhong)(zhong)(zhong)來(lai)做相應的(de)(de)工作。幾乎所(suo)有(you)的(de)(de)數字系(xi)統在處理信號都是(shi)(shi)(shi)按節(jie)拍(pai)一(yi)步一(yi)步地(di)進行(xing)的(de)(de)，系(xi)統各部分(fen)也是(shi)(shi)(shi)按節(jie)拍(pai)做的(de)(de)，要使(shi)電(dian)路(lu)的(de)(de)各部分(fen)統一(yi)節(jie)拍(pai)就需要一(yi)個(ge)“時(shi)(shi)鐘(zhong)(zhong)(zhong)信號”，產(chan)生(sheng)這個(ge)時(shi)(shi)鐘(zhong)(zhong)(zhong)信號的(de)(de)電(dian)路(lu)就是(shi)(shi)(shi)時(shi)(shi)鐘(zhong)(zhong)(zhong)電(dian)路(lu)。時(shi)(shi)鐘(zhong)(zhong)(zhong)電(dian)路(lu)的(de)(de)中心是(shi)(shi)(shi)個(ge)比(bi)較穩定的(de)(de)振(zhen)蕩(dang)器(qi)(qi)（一(yi)般都用(yong)晶體振(zhen)蕩(dang)器(qi)(qi)），振(zhen)蕩(dang)器(qi)(qi)產(chan)生(sheng)的(de)(de)是(shi)(shi)(shi)正(zheng)弦(xian)波，頻(pin)率不一(yi)定是(shi)(shi)(shi)電(dian)路(lu)工作的(de)(de)時(shi)(shi)鐘(zhong)(zhong)(zhong)頻(pin)率。所(suo)以要把這正(zheng)弦(xian)波進行(xing)分(fen)頻(pin)，處理，形成(cheng)時(shi)(shi)鐘(zhong)(zhong)(zhong)脈沖(chong)，然后(hou)分(fen)配到需要的(de)(de)地(di)方。讓系(xi)統各部分(fen)工作時(shi)(shi)使(shi)用(yong)。

線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)的(de)(de)(de)(de)作用解(jie)析線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)可實現一(yi)個可變電(dian)阻器(qi)(qi)(qi)以調節(jie)輸出(chu)電(dian)壓 線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)作用線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)的(de)(de)(de)(de)突(tu)出(chu)優(you)(you)點是具(ju)有(you)(you)較(jiao)低(di)的(de)(de)(de)(de)成本，較(jiao)低(di)的(de)(de)(de)(de)噪聲和較(jiao)低(di)的(de)(de)(de)(de)靜態電(dian)流。它的(de)(de)(de)(de)外面器(qi)(qi)(qi)件也很少，通(tong)(tong)常只有(you)(you)一(yi)兩個旁路電(dian)容。新(xin)型線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)可達(da)到以下指標(biao)(biao)：30μV 輸出(chu)噪聲、60dB PSRR、6μA 靜態電(dian)流及100mV的(de)(de)(de)(de)壓差。線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)能夠實現這些(xie)特性(xing)(xing)的(de)(de)(de)(de)主要原因(yin)在于內部(bu)調整管(guan)(guan)采用了P溝道場(chang)效(xiao)應管(guan)(guan)，而不(bu)是通(tong)(tong)常線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)中的(de)(de)(de)(de)PNP晶(jing)體管(guan)(guan)。深(shen)圳市(shi)凱(kai)軒業科技有(you)(you)限公司(si)(si)在同行(xing)業領(ling)域中，一(yi)直處在一(yi)個不(bu)斷銳意進取，不(bu)斷制造創新(xin)的(de)(de)(de)(de)市(shi)場(chang)高度，多年以來致力于發展富有(you)(you)創新(xin)價(jia)(jia)值理念(nian)的(de)(de)(de)(de)產品(pin)標(biao)(biao)準，在廣東省等地(di)區(qu)的(de)(de)(de)(de)電(dian)子元器(qi)(qi)(qi)件中始(shi)終保(bao)持良好的(de)(de)(de)(de)商業口碑，成績讓(rang)我們喜悅(yue)，但不(bu)會讓(rang)我們止步，殘酷的(de)(de)(de)(de)市(shi)場(chang)磨煉了我們堅(jian)強不(bu)屈的(de)(de)(de)(de)意志(zhi)深(shen)圳市(shi)凱(kai)軒業電(dian)子有(you)(you)限公司(si)(si)是一(yi)家專業設(she)計研發線(xian)性(xing)(xing)穩(wen)(wen)壓器(qi)(qi)(qi)，廠家直銷，價(jia)(jia)格優(you)(you)勢(shi)。

由于(yu)P溝(gou)道(dao)(dao)FET穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)具有較低的(de)(de)(de)壓(ya)(ya)(ya)差和接(jie)(jie)地(di)電(dian)(dian)流(liu)(liu)，因(yin)(yin)此(ci)被廣大(da)用(yong)(yong)于(yu)許多電(dian)(dian)池供(gong)電(dian)(dian)的(de)(de)(de)設備(bei)。該類型(xing)穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)將(jiang)P溝(gou)道(dao)(dao)FET用(yong)(yong)作它(ta)的(de)(de)(de)旁路元件。這種穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)的(de)(de)(de)電(dian)(dian)壓(ya)(ya)(ya)差可以很低，因(yin)(yin)為很容(rong)易通過調(diao)(diao)整FET尺寸將(jiang)漏-源阻(zu)抗調(diao)(diao)整到較低值(zhi)。另(ling)一個(ge)有用(yong)(yong)的(de)(de)(de)特(te)性(xing)是(shi)低的(de)(de)(de)接(jie)(jie)地(di)電(dian)(dian)流(liu)(liu)，因(yin)(yin)為P溝(gou)道(dao)(dao)FET的(de)(de)(de)“柵(zha)極電(dian)(dian)流(liu)(liu)”很低。然(ran)而(er)，由于(yu) P溝(gou)道(dao)(dao)FET具有相(xiang)對大(da)的(de)(de)(de)柵(zha)極電(dian)(dian)容(rong)，因(yin)(yin)此(ci)它(ta)需要外接(jie)(jie)具有特(te)定范圍容(rong)量與(yu)ESR的(de)(de)(de)電(dian)(dian)容(rong)才(cai)能穩(wen)(wen)(wen)定工作。N溝(gou)道(dao)(dao)FET穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)非常適合那(nei)些要求低壓(ya)(ya)(ya)差、低接(jie)(jie)地(di)電(dian)(dian)流(liu)(liu)和高負載(zai)電(dian)(dian)流(liu)(liu)的(de)(de)(de)設備(bei)使用(yong)(yong)。用(yong)(yong)于(yu)旁路管采用(yong)(yong)的(de)(de)(de)是(shi)N溝(gou)道(dao)(dao)FET，因(yin)(yin)此(ci)這種穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)的(de)(de)(de)壓(ya)(ya)(ya)差和接(jie)(jie)地(di)電(dian)(dian)流(liu)(liu)都很低。雖(sui)然(ran)它(ta)也需要外接(jie)(jie)電(dian)(dian)容(rong)才(cai)能穩(wen)(wen)(wen)定工作，但(dan)電(dian)(dian)容(rong)值(zhi)不用(yong)(yong)很大(da)，ESR也不重要。N溝(gou)道(dao)(dao)FET穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)需要充(chong)電(dian)(dian)泵來建立柵(zha)極偏置電(dian)(dian)壓(ya)(ya)(ya)，因(yin)(yin)此(ci)電(dian)(dian)路相(xiang)對復雜一些。幸運的(de)(de)(de)是(shi)，相(xiang)同負載(zai)電(dian)(dian)流(liu)(liu)下N溝(gou)道(dao)(dao)FET尺寸較多時可比(bi)P溝(gou)道(dao)(dao)FET小50%.kxy線性(xing)穩(wen)(wen)(wen)壓(ya)(ya)(ya)電(dian)(dian)源，是(shi)指(zhi)調(diao)(diao)整管工作在線性(xing)狀(zhuang)態(tai)下的(de)(de)(de)直(zhi)流(liu)(liu)穩(wen)(wen)(wen)壓(ya)(ya)(ya)電(dian)(dian)源。選深圳市凱軒業電(dian)(dian)子(zi)。自動(dong)化線性(xing)穩(wen)(wen)(wen)壓(ya)(ya)(ya)器(qi)采購

線(xian)性穩壓(ya)器(qi)，就選深圳市凱軒(xuan)業(ye)科技有限公司。北京線(xian)性穩壓(ya)器(qi)的(de)用途

時(shi)鐘(zhong)(zhong)振(zhen)(zhen)蕩(dang)(dang)器的(de)(de)(de)(de)作用(yong)是什么？時(shi)鐘(zhong)(zhong)振(zhen)(zhen)蕩(dang)(dang)電(dian)路中精(jing)確(que)(que)(que)地確(que)(que)(que)定(ding)振(zhen)(zhen)蕩(dang)(dang)頻(pin)(pin)(pin)率，它與(yu)所屬電(dian)路系統中的(de)(de)(de)(de)主(zhu)芯(xin)片內部(bu)(bu)的(de)(de)(de)(de)振(zhen)(zhen)蕩(dang)(dang)電(dian)路配合，共同(tong)組成“石英晶(jing)(jing)體(ti)(ti)諧振(zhen)(zhen)器”（簡“晶(jing)(jing)振(zhen)(zhen)”），產生(sheng)(sheng)主(zhu)板(ban)上各(ge)個(ge)(ge)系統所必需(xu)的(de)(de)(de)(de)時(shi)鐘(zhong)(zhong)信號(hao)。工(gong)作時(shi)，首(shou)先由主(zhu)芯(xin)片內部(bu)(bu)的(de)(de)(de)(de)“多(duo)(duo)諧振(zhen)(zhen)蕩(dang)(dang)器”產生(sheng)(sheng)一(yi)個(ge)(ge)頻(pin)(pin)(pin)譜很(hen)寬的(de)(de)(de)(de)振(zhen)(zhen)蕩(dang)(dang)，這個(ge)(ge)包含(han)有多(duo)(duo)種“諧頻(pin)(pin)(pin)”的(de)(de)(de)(de)振(zhen)(zhen)蕩(dang)(dang)信號(hao)從主(zhu)芯(xin)片輸出(chu)后，直接加到(dao)晶(jing)(jing)體(ti)(ti)的(de)(de)(de)(de)兩端。通過晶(jing)(jing)體(ti)(ti)的(de)(de)(de)(de)“精(jing)確(que)(que)(que)選頻(pin)(pin)(pin)”作用(yong)，確(que)(que)(que)定(ding)一(yi)個(ge)(ge)時(shi)鐘(zhong)(zhong)頻(pin)(pin)(pin)率之后，再反饋(kui)回芯(xin)片內部(bu)(bu)去控制“多(duo)(duo)諧振(zhen)(zhen)蕩(dang)(dang)器”的(de)(de)(de)(de)振(zhen)(zhen)蕩(dang)(dang)頻(pin)(pin)(pin)率。這樣，整個(ge)(ge)時(shi)鐘(zhong)(zhong)發生(sheng)(sheng)器就在晶(jing)(jing)體(ti)(ti)選定(ding)的(de)(de)(de)(de)頻(pin)(pin)(pin)率上工(gong)作，產生(sheng)(sheng)一(yi)個(ge)(ge)頻(pin)(pin)(pin)率穩(wen)定(ding)、幅度恒定(ding)的(de)(de)(de)(de)時(shi)鐘(zhong)(zhong)脈沖，提供(gong)給主(zhu)芯(xin)片內部(bu)(bu)的(de)(de)(de)(de)各(ge)個(ge)(ge)系統。北(bei)京線性穩(wen)壓器的(de)(de)(de)(de)用(yong)途

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