“看到变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)出(chu)线接头处(chu)闪火花而(er)关(guan)(guan)了电(dian)(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)炉(lu)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)就正常了”，这是(shi)(shi)明显接线端子的(de)(de)松动而(er)引起的(de)(de)，应(ying)及时停电(dian)(dian)(dian)(dian)(dian)(dian)(dian)处(chu)理好接触不(bu)好的(de)(de)部位(wei)。另外(wai)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)正常运行时开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)中变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)如(ru)何选型(xing)按(an)磁芯Ae面(mian)积算功(gong)率(lv)(lv)选型(xing)的(de)(de)。考(kao)虑到过emi选特殊(shu)形状的(de)(de)磁芯。没(mei)要(yao)求(qiu)的(de)(de)。只要(yao)功(gong)率(lv)(lv)够用就可以了。反激开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)设(she)计(ji)步骤谁懂计(ji)算设(she)计(ji)步骤如(ru)下(xia)：1、根(gen)(gen)据(ju)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)设(she)计(ji)要(yao)求(qiu)，计(ji)算出(chu)开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)功(gong)率(lv)(lv)。2、根(gen)(gen)据(ju)这个功(gong)率(lv)(lv)，开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)工(gong)作频率(lv)(lv)，选择(ze)开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)磁芯，从而(er)确定(ding)Ae、Le等磁芯参数(shu)；3、根(gen)(gen)据(ju)设(she)计(ji)开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)时确定(ding)的(de)(de)开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)初级电(dian)(dian)(dian)(dian)(dian)(dian)(dian)感值Lp、Ae、磁芯的(de)(de)Bmax、初级峰(feng)值电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流Ippk，计(ji)算出(chu)初级圈(quan)数(shu)Np_min=(Lp*Ippk)/(B_max×Ae)4、根(gen)(gen)据(ju)你(ni)要(yao)求(qiu)的(de)(de)输(shu)出(chu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)(ya)。计(ji)算次级输(shu)出(chu)圈(quan)数(shu),反馈线圈(quan)圈(quan)数(shu)。5、根(gen)(gen)据(ju)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)流，选择(ze)线径；6、校核开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)设(she)计(ji)后(hou)的(de)(de)窗口(kou)绕(rao)线，是(shi)(shi)否合乎要(yao)求(qiu)。如(ru)何检(jian)测开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)的(de)(de)好坏(huai)开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)故障(zhang)率(lv)(lv)较小，损(sun)坏(huai)的(de)(de)很少。但也(ye)不(bu)是(shi)(shi)jue对的(de)(de)。开(kai)(kai)关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)一般损(sun)坏(huai)较多的(de)(de)是(shi)(shi)开(kai)(kai)关(guan)(guan)管，输(shu)入整流管，输(shu)出(chu)整流管，滤波电(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)。如(ru)果输(shu)入整流有(you)300V左右的(de)(de)高压(ya)(ya)(ya)(ya)(ya)，并(bing)且开(kai)(kai)关(guan)(guan)管没(mei)有(you)损(sun)坏(huai)，偏置相关(guan)(guan)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路没(mei)问题(ti)，电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路不(bu)起振不(bu)工(gong)作，应(ying)重点检(jian)查输(shu)出(chu)整流管等电(dian)(dian)(dian)(dian)(dian)(dian)(dian)路。12. 电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)可以将高压(ya)(ya)(ya)(ya)(ya)输(shu)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)线路的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)能降低到适(shi)用于家(jia)庭和商(shang)业(ye)用电(dian)(dian)(dian)(dian)(dian)(dian)(dian)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(ya)(ya)等级。浙江空调(diao)电(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)变(bian)压(ya)(ya)(ya)(ya)(ya)器(qi)(qi)哪家(jia)好

做如下(xia)几种(zhong)状态测(ce)试(shi)：（1）初(chu)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)与次(ci)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)之(zhi)间的(de)(de)电阻(zu)(zu)值；（2）初(chu)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)与外壳(qiao)之(zhi)间的(de)(de)电阻(zu)(zu)值；（3）次(ci)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)与外壳(qiao)之(zhi)间的(de)(de)电阻(zu)(zu)值。上(shang)述测(ce)试(shi)结果分(fen)出现三种(zhong)情况：（1）阻(zu)(zu)值为无(wu)穷(qiong)大(da)：正常；（2）阻(zu)(zu)值为零(ling)：有(you)(you)短(duan)路(lu)性(xing)故(gu)障(zhang)；（3）阻(zu)(zu)值小于(yu)(yu)无(wu)穷(qiong)大(da)，但(dan)大(da)于(yu)(yu)零(ling)：有(you)(you)漏(lou)电性(xing)故(gu)障(zhang)。二、电源变压(ya)器(qi)的(de)(de)检(jian)测(ce)：1、通过观(guan)察(cha)变压(ya)器(qi)的(de)(de)外貌来(lai)检(jian)查(cha)其是(shi)(shi)(shi)否(fou)有(you)(you)明(ming)显(xian)异常现象。如线(xian)圈(quan)引(yin)线(xian)是(shi)(shi)(shi)否(fou)断裂，脱焊，绝缘材料是(shi)(shi)(shi)否(fou)有(you)(you)烧焦痕迹(ji)，铁芯紧固螺杆是(shi)(shi)(shi)否(fou)有(you)(you)松动，硅钢片有(you)(you)无(wu)锈蚀，绕(rao)(rao)组(zu)线(xian)圈(quan)是(shi)(shi)(shi)否(fou)有(you)(you)外露(lu)等。2、绝缘性(xing)测(ce)试(shi)。用(yong)万用(yong)表(biao)R×10k挡(dang)(dang)(dang)分(fen)别测(ce)量铁芯与初(chu)级(ji)(ji)(ji)(ji)(ji)，初(chu)级(ji)(ji)(ji)(ji)(ji)与各(ge)(ge)次(ci)级(ji)(ji)(ji)(ji)(ji)、铁芯与各(ge)(ge)次(ci)级(ji)(ji)(ji)(ji)(ji)、静电屏(ping)蔽层(ceng)与衩次(ci)级(ji)(ji)(ji)(ji)(ji)、次(ci)级(ji)(ji)(ji)(ji)(ji)各(ge)(ge)绕(rao)(rao)组(zu)间的(de)(de)电阻(zu)(zu)值，万用(yong)表(biao)指(zhi)针均应(ying)指(zhi)在(zai)(zai)无(wu)穷(qiong)大(da)位(wei)置不动。否(fou)则，说明(ming)变压(ya)器(qi)绝缘性(xing)能(neng)不良。3、线(xian)圈(quan)通断的(de)(de)检(jian)测(ce)。将万用(yong)表(biao)置于(yu)(yu)R×1挡(dang)(dang)(dang)，测(ce)试(shi)中，若某个绕(rao)(rao)组(zu)的(de)(de)电阻(zu)(zu)值为无(wu)穷(qiong)大(da)，则说明(ming)此绕(rao)(rao)组(zu)有(you)(you)断路(lu)性(xing)故(gu)障(zhang)。4、判别初(chu)、次(ci)级(ji)(ji)(ji)(ji)(ji)线(xian)圈(quan)。电源变压(ya)器(qi)初(chu)级(ji)(ji)(ji)(ji)(ji)引(yin)脚(jiao)和(he)次(ci)级(ji)(ji)(ji)(ji)(ji)引(yin)脚(jiao)一般(ban)都是(shi)(shi)(shi)分(fen)别从两侧引(yin)出的(de)(de)，并(bing)且(qie)初(chu)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)多标有(you)(you)220V字样，次(ci)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)则标出额定电压(ya)值，如15V、24V、35V等。再根据这些标记进行识别。5、空载电流的(de)(de)检(jian)测(ce)。（1）直(zhi)接测(ce)量法。将次(ci)级(ji)(ji)(ji)(ji)(ji)所有(you)(you)绕(rao)(rao)组(zu)全(quan)部开路(lu)，把万用(yong)表(biao)置于(yu)(yu)交流电流挡(dang)(dang)(dang)（500mA，串(chuan)入初(chu)级(ji)(ji)(ji)(ji)(ji)绕(rao)(rao)组(zu)。福(fu)建(jian)洗衣机电源变压(ya)器(qi)代加工16. 电源变压(ya)器(qi)在(zai)(zai)建(jian)筑设(she)备中用(yong)于(yu)(yu)提供稳定和(he)安全(quan)的(de)(de)电能(neng)供应(ying)。

矽(xi)钢(gang)片含硅(gui)(gui)(gui)(gui)量(liang)的(de)(de)(de)(de)(de)大小对变(bian)压(ya)(ya)(ya)器(qi)的(de)(de)(de)(de)(de)质(zhi)量(liang)影(ying)响(xiang)不(bu)是很(hen)大，而(er)有(you)(you)取向和无(wu)取向则和铁(tie)芯(xin)的(de)(de)(de)(de)(de)型号有(you)(you)关系。其(qi)次(ci)，即使(shi)是同(tong)(tong)样型号的(de)(de)(de)(de)(de)铁(tie)芯(xin)如果你工艺(yi)处理(li)不(bu)好，那品质(zhi)差别也是很(hen)大的(de)(de)(de)(de)(de)，其(qi)差别有(you)(you)时甚至(zhi)高(gao)(gao)达(da)百分(fen)之四五十。好的(de)(de)(de)(de)(de)铁(tie)芯(xin)而(er)同(tong)(tong)样的(de)(de)(de)(de)(de)材料(liao)其(qi)热处理(li)和线卷绕制(zhi)工艺(yi)十分(fen)关键，良好的(de)(de)(de)(de)(de)热处理(li)只需很(hen)小的(de)(de)(de)(de)(de)10mA激磁电(dian)流(liu)就(jiu)能达(da)到15000高(gao)(gao)斯，而(er)不(bu)好的(de)(de)(de)(de)(de)热处理(li)则可能要(yao)(yao)50mA的(de)(de)(de)(de)(de)激磁电(dian)流(liu)才能达(da)到相应的(de)(de)(de)(de)(de)15000高(gao)(gao)斯，这二者之间的(de)(de)(de)(de)(de)悬殊差别是很(hen)大的(de)(de)(de)(de)(de)。从专(zhuan)业的(de)(de)(de)(de)(de)角度(du)来(lai)判断(duan)(duan)铁(tie)芯(xin)的(de)(de)(de)(de)(de)好与不(bu)好，主(zhu)要(yao)(yao)是通过(guo)激磁电(dian)流(liu)、铁(tie)损耗、饱和参(can)数(shu)几(ji)项(xiang)指标来(lai)进行综(zong)合(he)性(xing)(xing)评价。四、环型电(dian)源(yuan)变(bian)压(ya)(ya)(ya)器(qi)的(de)(de)(de)(de)(de)带式(shi)硅(gui)(gui)(gui)(gui)钢(gang)片若采用了拼(pin)接(jie)工艺(yi)，是不(bu)是就(jiu)意味着品质(zhi)肯定不(bu)好?还不(bu)能一(yi)(yi)概而(er)论，但是拼(pin)接(jie)的(de)(de)(de)(de)(de)断(duan)(duan)位头(tou)不(bu)易太多，因为多一(yi)(yi)个断(duan)(duan)位就(jiu)多了一(yi)(yi)个漏磁点(dian)，所(suo)(suo)以(yi)接(jie)头(tou)点(dian)不(bu)要(yao)(yao)超过(guo)2–3个。制(zhi)作工艺(yi)上凡断(duan)(duan)头(tou)拼(pin)接(jie)均(jun)要(yao)(yao)予先(xian)经过(guo)酸洗处理(li)，但制(zhi)造好的(de)(de)(de)(de)(de)音响(xiang)器(qi)材的(de)(de)(de)(de)(de)环型变(bian)压(ya)(ya)(ya)器(qi)，严格来(lai)讲还是采用无(wu)拼(pin)接(jie)的(de)(de)(de)(de)(de)矽(xi)钢(gang)片为好，其(qi)工艺(yi)质(zhi)量(liang)会更有(you)(you)保障。五、电(dian)源(yuan)变(bian)压(ya)(ya)(ya)器(qi)中的(de)(de)(de)(de)(de)硅(gui)(gui)(gui)(gui)钢(gang)片材料(liao)有(you)(you)什么(me)讲究?由(you)于(yu)硅(gui)(gui)(gui)(gui)钢(gang)在交变(bian)磁场中的(de)(de)(de)(de)(de)损耗很(hen)小，所(suo)(suo)以(yi)电(dian)源(yuan)变(bian)压(ya)(ya)(ya)器(qi)主(zhu)要(yao)(yao)都是采用硅(gui)(gui)(gui)(gui)钢(gang)片来(lai)作磁性(xing)(xing)材料(liao)。硅(gui)(gui)(gui)(gui)钢(gang)片可分(fen)为热轧和冷(leng)轧两类，冷(leng)轧硅(gui)(gui)(gui)(gui)钢(gang)带由(you)于(yu)具(ju)有(you)(you)较高(gao)(gao)的(de)(de)(de)(de)(de)导磁系数(shu)和较低的(de)(de)(de)(de)(de)损耗。

当初级绕(rao)组(zu)(zu)的(de)(de)(de)(de)(de)插(cha)头插(cha)入220V交(jiao)流(liu)(liu)市(shi)(shi)电(dian)(dian)(dian)时(shi)，万用表(biao)所指示(shi)的(de)(de)(de)(de)(de)便是空(kong)载(zai)(zai)(zai)电(dian)(dian)(dian)流(liu)(liu)值(zhi)。此值(zhi)不应(ying)(ying)大于变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器满载(zai)(zai)(zai)电(dian)(dian)(dian)流(liu)(liu)的(de)(de)(de)(de)(de)10%～20%。一(yi)(yi)般(ban)常见(jian)电(dian)(dian)(dian)子(zi)设备电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器的(de)(de)(de)(de)(de)正(zheng)(zheng)常空(kong)载(zai)(zai)(zai)电(dian)(dian)(dian)流(liu)(liu)应(ying)(ying)在100mA左右(you)。如果超出太(tai)多，则说明变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器有短路性故障。（2）间接测(ce)(ce)量法。在变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器的(de)(de)(de)(de)(de)初级绕(rao)组(zu)(zu)中串(chuan)联(lian)(lian)(lian)一(yi)(yi)个(ge)10?/5W的(de)(de)(de)(de)(de)电(dian)(dian)(dian)阻(zu)，次级仍全部空(kong)载(zai)(zai)(zai)。把万用表(biao)拨至交(jiao)流(liu)(liu)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)挡。加(jia)电(dian)(dian)(dian)后(hou)，用两表(biao)笔测(ce)(ce)出电(dian)(dian)(dian)阻(zu)R两端的(de)(de)(de)(de)(de)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)降U，然(ran)后(hou)用欧姆定律算(suan)出空(kong)载(zai)(zai)(zai)电(dian)(dian)(dian)流(liu)(liu)I空(kong)，即I空(kong)=U/R。6、空(kong)载(zai)(zai)(zai)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)的(de)(de)(de)(de)(de)检(jian)(jian)测(ce)(ce)。将电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器的(de)(de)(de)(de)(de)初级接220V市(shi)(shi)电(dian)(dian)(dian)，用万用表(biao)交(jiao)流(liu)(liu)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)接依次测(ce)(ce)出各(ge)(ge)绕(rao)组(zu)(zu)的(de)(de)(de)(de)(de)空(kong)载(zai)(zai)(zai)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)值(zhi)（U21、U22、U23、U24）应(ying)(ying)符(fu)合要求(qiu)值(zhi)，允许(xu)误差范围一(yi)(yi)般(ban)为(wei)(wei)：高压(ya)(ya)(ya)(ya)绕(rao)组(zu)(zu)≤±10%，低(di)压(ya)(ya)(ya)(ya)绕(rao)组(zu)(zu)≤±5%，带中心抽头的(de)(de)(de)(de)(de)两组(zu)(zu)对称绕(rao)组(zu)(zu)的(de)(de)(de)(de)(de)电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)差应(ying)(ying)≤±2%。7、一(yi)(yi)般(ban)小(xiao)功率电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器允许(xu)温升(sheng)为(wei)(wei)40℃～50℃，如果所用绝(jue)缘材料质(zhi)量较好(hao)，允许(xu)温升(sheng)还可(ke)提高。8、检(jian)(jian)测(ce)(ce)判(pan)别(bie)各(ge)(ge)绕(rao)组(zu)(zu)的(de)(de)(de)(de)(de)同名端。在使(shi)用电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器时(shi)，有时(shi)为(wei)(wei)了得(de)到所需的(de)(de)(de)(de)(de)次级电(dian)(dian)(dian)压(ya)(ya)(ya)(ya)，可(ke)将两个(ge)或多个(ge)次级绕(rao)组(zu)(zu)串(chuan)联(lian)(lian)(lian)起来使(shi)用。采用串(chuan)联(lian)(lian)(lian)法使(shi)用电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器时(shi)，参(can)加(jia)串(chuan)联(lian)(lian)(lian)的(de)(de)(de)(de)(de)各(ge)(ge)绕(rao)组(zu)(zu)的(de)(de)(de)(de)(de)同名端必须正(zheng)(zheng)确连(lian)接，不能(neng)搞错。否则，变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器不能(neng)正(zheng)(zheng)常工作。I.电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器短路性故障的(de)(de)(de)(de)(de)综合检(jian)(jian)测(ce)(ce)判(pan)别(bie)。22. 电(dian)(dian)(dian)源变(bian)(bian)(bian)压(ya)(ya)(ya)(ya)器的(de)(de)(de)(de)(de)智能(neng)化(hua)和(he)(he)自(zi)动化(hua)可(ke)以提升(sheng)其(qi)控制和(he)(he)监测(ce)(ce)功能(neng)，实现(xian)远程操作和(he)(he)管(guan)理。

如低矮形RM磁(ci)芯，PQ型磁(ci)芯等），，均(jun)可降低热阻(zu)(zu)提高(gao)(gao)(gao)通(tong)(tong)过功率(lv)(lv)(lv)。7．磁(ci)芯总(zong)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)软(ruan)磁(ci)铁(tie)(tie)氧(yang)体(ti)磁(ci)芯总(zong)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)通(tong)(tong)常(chang)细分为(wei)(wei)三(san)种类型：磁(ci)滞(zhi)(zhi)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)Ph、涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)Pe和(he)(he)剩(sheng)余损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)Pr。每种损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)贡献(xian)的(de)频(pin)率(lv)(lv)(lv)范围是(shi)不(bu)同的(de)，磁(ci)滞(zhi)(zhi)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)正比于直流(liu)(liu)(liu)磁(ci)滞(zhi)(zhi)回线(xian)(xian)的(de)面积，并与(yu)频(pin)率(lv)(lv)(lv)成(cheng)线(xian)(xian)性关系(xi)，即(ji)(ji)Ph=f∮BdH（7）这里(li)，∮BdH等于蕞(zui)(zui)大磁(ci)通(tong)(tong)B下(xia)(xia)测得(de)的(de)直流(liu)(liu)(liu)磁(ci)滞(zhi)(zhi)回线(xian)(xian)的(de)等值能。对于工作(zuo)(zuo)(zuo)在(zai)(zai)频(pin)率(lv)(lv)(lv)100khz以(yi)下(xia)(xia)的(de)功率(lv)(lv)(lv)铁(tie)(tie)氧(yang)体(ti)磁(ci)芯，降低磁(ci)滞(zhi)(zhi)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)是(shi)蕞(zui)(zui)重(zhong)要(yao)的(de)。为(wei)(wei)获得(de)低损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)，要(yao)选择铁(tie)(tie)氧(yang)体(ti)成(cheng)分具有蕞(zui)(zui)小(xiao)矫顽力(li)Hc和(he)(he)蕞(zui)(zui)小(xiao)各向异性常(chang)数(shu)K，理想情况是(shi)各向异性补偿点（即(ji)(ji)K≈0）位(wei)(wei)于变(bian)压(ya)器(qi)(qi)工作(zuo)(zuo)(zuo)温度（约(yue)80～100℃）。另外，此成(cheng)分应(ying)有低的(de)磁(ci)致伸缩(suo)常(chang)数(shu)λ，工艺上要(yao)避免(mian)内(nei)外应(ying)力(li)和(he)(he)夹杂(za)物。采用大而(er)均(jun)匀(yun)晶粒是(shi)有利的(de)，因(yin)为(wei)(wei)Hc∞D-1(D是(shi)晶粒尺寸(cun))。关于涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)Pe可用下(xia)(xia)式表示(shi)：Pe=Cef2B2/ρ（8）这里(li)，Ce是(shi)尺寸(cun)常(chang)数(shu)，ρ是(shi)在(zai)(zai)测量频(pin)率(lv)(lv)(lv)f时的(de)电(dian)(dian)阻(zu)(zu)率(lv)(lv)(lv)。随着(zhe)开关电(dian)(dian)源小(xiao)型化(hua)和(he)(he)工作(zuo)(zuo)(zuo)频(pin)率(lv)(lv)(lv)的(de)提高(gao)(gao)(gao)，由于Pe∞f2，因(yin)而(er)降低涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)对高(gao)(gao)(gao)频(pin)电(dian)(dian)源变(bian)压(ya)器(qi)(qi)更为(wei)(wei)重(zhong)要(yao)。随着(zhe)频(pin)率(lv)(lv)(lv)提高(gao)(gao)(gao)，涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)在(zai)(zai)总(zong)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)中(zhong)所(suo)占(zhan)比例逐步增大，当工作(zuo)(zuo)(zuo)频(pin)率(lv)(lv)(lv)达200～500kHz时，涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)常(chang)常(chang)已占(zhan)支配地位(wei)(wei)。从图7所(suo)示(shi)R2KB1材料(liao)磁(ci)芯总(zong)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)（包括磁(ci)滞(zhi)(zhi)和(he)(he)涡(wo)(wo)流(liu)(liu)(liu)损(sun)(sun)(sun)(sun)耗(hao)(hao)(hao)(hao)）与(yu)频(pin)率(lv)(lv)(lv)关系(xi)实测曲线(xian)(xian)，可得(de)到证明。37. 电(dian)(dian)源变(bian)压(ya)器(qi)(qi)的(de)技术(shu)培(pei)训和(he)(he)人才储备对保障(zhang)电(dian)(dian)力(li)供(gong)应(ying)和(he)(he)技术(shu)支持具有重(zhong)要(yao)意(yi)义。江(jiang)西三(san)相电(dian)(dian)源变(bian)压(ya)器(qi)(qi)订做价格

23. 电源变压器的节能技术应用可(ke)以减少其(qi)损耗和能源浪费。浙江空调(diao)电源变压器哪家(jia)好

[2]电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)比(bi)(bi)较编辑一(yi)(yi)、电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)制(zhi)作(zuo)中，线(xian)(xian)圈的(de)机器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)绕(rao)(rao)制(zhi)和手工(gong)(gong)(gong)绕(rao)(rao)制(zhi)各有什么优(you)(you)缺点?机器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)绕(rao)(rao)制(zhi)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)优(you)(you)点是效率高(gao)(gao)且(qie)外观(guan)(guan)成形漂亮，但(dan)绕(rao)(rao)制(zhi)高(gao)(gao)个(ge)子(zi)小洞眼的(de)环(huan)型(xing)(xing)(xing)变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)却比(bi)(bi)较麻烦，而(er)且(qie)在(zai)绝缘(yuan)处理工(gong)(gong)(gong)艺的(de)可(ke)靠性方(fang)面反(fan)不(bu)如(ru)手工(gong)(gong)(gong)绕(rao)(rao)制(zhi)到位。手工(gong)(gong)(gong)绕(rao)(rao)制(zhi)可(ke)以(yi)(yi)将变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)漏磁(ci)做(zuo)(zuo)(zuo)得(de)非常小，其(qi)在(zai)绕(rao)(rao)制(zhi)过(guo)程中能(neng)针对线(xian)(xian)圈匝数的(de)布(bu)局随时(shi)予以(yi)(yi)调整，所以(yi)(yi)真正(zheng)的(de)Hi–END变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)一(yi)(yi)定是纯(chun)手工(gong)(gong)(gong)绕(rao)(rao)制(zhi)，纯(chun)手工(gong)(gong)(gong)绕(rao)(rao)制(zhi)的(de)缺点是效率低、速度(du)慢。二、环(huan)型(xing)(xing)(xing)、EI型(xing)(xing)(xing)、R型(xing)(xing)(xing)、C型(xing)(xing)(xing)几种(zhong)(zhong)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)哪(na)(na)一(yi)(yi)种(zhong)(zhong)好(hao)?它(ta)们各有其(qi)优(you)(you)缺点而(er)不(bu)存在(zai)谁好(hao)之说(shuo)，所以(yi)(yi)严格来讲(jiang)哪(na)(na)一(yi)(yi)种(zhong)(zhong)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)都(dou)可(ke)以(yi)(yi)做(zuo)(zuo)(zuo)得(de)好(hao)。从结构上来讲(jiang)，环(huan)型(xing)(xing)(xing)能(neng)够(gou)做(zuo)(zuo)(zuo)到漏磁(ci)小，但(dan)声音(yin)听感方(fang)面EI型(xing)(xing)(xing)则可(ke)以(yi)(yi)把(ba)中频密度(du)感做(zuo)(zuo)(zuo)得(de)更好(hao)一(yi)(yi)些。单就磁(ci)饱(bao)(bao)和而(er)言，EI型(xing)(xing)(xing)要(yao)比(bi)(bi)环(huan)型(xing)(xing)(xing)强，但(dan)在(zai)效率上则环(huan)型(xing)(xing)(xing)又优(you)(you)于EI型(xing)(xing)(xing)。尽管(guan)如(ru)此，其(qi)问(wen)题的(de)关键还(hai)是在(zai)于你(ni)能(neng)不(bu)能(neng)扬长避短而(er)将它(ta)们各自(zi)的(de)优(you)(you)点充(chong)分发挥(hui)出来，而(er)这才是做(zuo)(zuo)(zuo)好(hao)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)根本(ben)。进口放大器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)中，环(huan)型(xing)(xing)(xing)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)应(ying)用仍然(ran)是主流，这基本(ben)说(shuo)明(ming)了一(yi)(yi)个(ge)问(wen)题。发烧友(you)对电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)的(de)评价要(yao)客观(guan)(guan)公正(zheng)，你(ni)不(bu)能(neng)拿一(yi)(yi)个(ge)没做(zuo)(zuo)(zuo)好(hao)的(de)东西作(zuo)参考而(er)说(shuo)它(ta)不(bu)好(hao)。有人(ren)说(shuo)环(huan)型(xing)(xing)(xing)电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)容易(yi)磁(ci)饱(bao)(bao)和。浙(zhe)江空调电(dian)(dian)(dian)源变(bian)压(ya)(ya)器(qi)(qi)(qi)(qi)(qi)(qi)(qi)(qi)哪(na)(na)家好(hao)

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