对(dui)于(yu)刚(gang)介入使(shi)用稳定(ding)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)可调电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)操(cao)作人(ren)员,由于(yu)对(dui)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)基本概(gai)念缺乏实质性的(de)(de)(de)理解如恒(heng)压(ya)(ya)、恒(heng)流(liu)(liu)、欧姆定(ding)律、电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)(de)主体结构等(deng)。 以下分(fen)三(san)个方(fang)面来(lai)分(fen)析：1.电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)可调电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)有(you)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)而无(wu)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)、或(huo)者有(you)电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)而无(wu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya).无(wu)论是(shi)上(shang)述(shu)那一种情况(kuang),电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)都巳正常工作,操(cao)作者都应(ying)该检查自己的(de)(de)(de)负(fu)载(zai)是(shi)否接(jie)触良好,负(fu)载(zai)是(shi)否被短路或(huo)开路、负(fu)载(zai)是(shi)否符合规范等(deng)等(deng).2.在调电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)可调电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)时,空载(zai)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)调不上(shang)去.有(you)些(xie)操(cao)作者喜欢(huan)把电(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)调节电(dian)(dian)(dian)(dian)(dian)(dian)位(wei)器左旋(xuan)...

一、合(he)闸(zha)后操作(zuo)手(shou)柄(bing)反弹不(bu)(bu)到(dao)位(wei) 阻(zu)隔(ge)(ge)开(kai)关和熔(rong)断器式阻(zu)隔(ge)(ge)开(kai)关合(he)闸(zha)后操作(zuo)手(shou)柄(bing)反弹不(bu)(bu)到(dao)位(wei)首要原(yuan)因是：阻(zu)隔(ge)(ge)开(kai)关手(shou)柄(bing)操作(zuo)联杆(gan)行程调整不(bu)(bu)合(he)适或(huo)静、动(dong)触(chu)(chu)头(tou)合(he)闸(zha)时有(you)卡(ka)(ka)阻(zu)景(jing)象所造成(cheng)的(de)。 处理办法：调整操作(zuo)联杆(gan)螺(luo)丝使其长(zhang)度与(yu)合(he)闸(zha)方位(wei)相符，处理静、动(dong)触(chu)(chu)头(tou)卡(ka)(ka)阻(zu)毛病。 二、接点打火(huo)(huo)或(huo)触(chu)(chu)头(tou)过(guo)热 阻(zu)隔(ge)(ge)开(kai)关或(huo)熔(rong)断器式阻(zu)隔(ge)(ge)开(kai)关触(chu)(chu)点打火(huo)(huo)首要是接点触(chu)(chu)摸不(bu)(bu)良(liang)(liang)、触(chu)(chu)摸电阻(zu)大所造成(cheng)的(de)，触(chu)(chu)头(tou)过(guo)热是静动(dong)触(chu)(chu)头(tou)触(chu)(chu)摸不(bu)(bu)良(liang)(liang)（触(chu)(chu)摸面积...

艾(ai)德杰为您(nin)介绍恒(heng)流(liu)(liu)源(yuan)(yuan)(yuan)电(dian)(dian)源(yuan)(yuan)(yuan)的(de)(de)(de)工作原理。 基(ji)(ji)本的(de)(de)(de)恒(heng)流(liu)(liu)源(yuan)(yuan)(yuan)电(dian)(dian)路(lu)主要是(shi)(shi)由(you)输(shu)(shu)入级(ji)(ji)和(he)输(shu)(shu)出(chu)级(ji)(ji)构成(cheng)，输(shu)(shu)入级(ji)(ji)提供参考电(dian)(dian)流(liu)(liu)，输(shu)(shu)出(chu)级(ji)(ji)输(shu)(shu)出(chu)需要的(de)(de)(de)恒(heng)定(ding)电(dian)(dian)流(liu)(liu)。 一(yi)、构成(cheng)恒(heng)流(liu)(liu)源(yuan)(yuan)(yuan)电(dian)(dian)路(lu)的(de)(de)(de)基(ji)(ji)本原则： 恒(heng)流(liu)(liu)源(yuan)(yuan)(yuan)电(dian)(dian)路(lu)就是(shi)(shi)要能(neng)够(gou)提供一(yi)个稳定(ding)的(de)(de)(de)电(dian)(dian)流(liu)(liu)以保证(zheng)其它(ta)电(dian)(dian)路(lu)稳定(ding)工作的(de)(de)(de)基(ji)(ji)础(chu)。即要求(qiu)恒(heng)流(liu)(liu)源(yuan)(yuan)(yuan)电(dian)(dian)路(lu)输(shu)(shu)出(chu)恒(heng)定(ding)电(dian)(dian)流(liu)(liu)，因(yin)此作为输(shu)(shu)出(chu)级(ji)(ji)的(de)(de)(de)器件应该是(shi)(shi)具有饱和(he)输(shu)(shu)出(chu)电(dian)(dian)流(liu)(liu)的(de)(de)(de)伏安特性。这可以采用(yong)工作于输(shu)(shu)出(chu)电(dian)(dian)流(liu)(liu)饱和(he)状(zhuang)态的(de)(de)(de)BJT 或者MOSFET来实现。 为了保证(zheng)输(shu)(shu)出(chu)晶体管(guan)...

雷击浪涌抗扰度试验等(deng)级的(de)(de)严(yan)酷度等(deng)级分(fen)为1、2、3、4级。电源(yuan)线(xian)差模(mo)试验的(de)(de)1级参(can)数未(wei)给，其余各级分(fen)别为0.5kV、1kV、2kV及(ji)待定(ding)(ding)(ding)。电源(yuan)线(xian)共模(mo)试验的(de)(de)各级参(can)数为0.5kV、1kV、2kV、4kV及(ji)待定(ding)(ding)(ding)。试验的(de)(de)严(yan)酷度等(deng)级取(qu)决于环境(遭受(shou)浪涌可能性(xing)的(de)(de)环境及(ji)安(an)装条件(jian)，大体分(fen)类如下。1级：普通的(de)(de)电磁(ci)骚扰环境，对设(she)备未(wei)规定(ding)(ding)(ding)特殊安(an)装要求，如普通安(an)装的(de)(de)电缆网络，工业性(xing)的(de)(de)工作场所和变电所。2级：有一定(ding)(ding)(ding)保护的(de)(de)环境，...

1.数据(ju)错失2.电(dian)路(lu)损(sun)毁，现(xian)象有：1）飞弧：在被(bei)损(sun)的(de)(de)部件(jian)上留下(xia)明(ming)显的(de)(de)电(dian)弧痕迹；2）电(dian)晕：在绝(jue)缘体表面(mian)上，有明(ming)显的(de)(de)电(dian)蚀痕迹，被(bei)蚀部位绝(jue)缘下(xia)降；3）控制电(dian)路(lu)的(de)(de)IC等元件(jian)损(sun)坏(huai)；4）一(yi)般(ban)电(dian)子设备、家用电(dian)器(qi)的(de)(de)整(zheng)流元件(jian)、稳压元件(jian)损(sun)坏(huai)；5）接地故(gu)障成设备带电(dian)（单相接地）：造成设备相间(jian)(jian)短路(lu)（电(dian)机(ji)相间(jian)(jian)短路(lu)）3.性能(neng)衰退4.电(dian)池短命5.卡(ka)机(ji)重启6.屏幕(mu)闪抖7.声音噪杂

看电(dian)(dian)(dian)压(ya)的标(biao)(biao)定值(zhi)时(shi)一个固定的数值(zhi)，则(ze)是(shi)恒压(ya)源(yuan)，若电(dian)(dian)(dian)压(ya)的标(biao)(biao)定值(zhi)是(shi)个范围值(zhi)，则(ze)是(shi)恒流(liu)源(yuan)。例(li)如：有(you)一个电(dian)(dian)(dian)源(yuan)它(ta)的输出电(dian)(dian)(dian)压(ya)是(shi)24V，我们(men)则(ze)确定这(zhei)个是(shi)恒压(ya)电(dian)(dian)(dian)源(yuan)，如果(guo)它(ta)标(biao)(biao)称的是(shi)20-50V，那么(me)这(zhei)个电(dian)(dian)(dian)源(yuan)一定是(shi)个恒流(liu)电(dian)(dian)(dian)源(yuan)。

恒流开关(guan)电(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)是(shi)(shi)在允(yun)许的(de)(de)(de)(de)负(fu)载的(de)(de)(de)(de)情况下，输出的(de)(de)(de)(de)电(dian)(dian)流不(bu)(bu)随(sui)负(fu)载的(de)(de)(de)(de)变化而变化，是(shi)(shi)恒定不(bu)(bu)变的(de)(de)(de)(de)，恒压(ya)(ya)开关(guan)电(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)是(shi)(shi)在允(yun)许的(de)(de)(de)(de)负(fu)载的(de)(de)(de)(de)情况下，输出的(de)(de)(de)(de)电(dian)(dian)压(ya)(ya)不(bu)(bu)随(sui)负(fu)载的(de)(de)(de)(de)变化而变化，是(shi)(shi)恒定不(bu)(bu)变的(de)(de)(de)(de)。一般(ban)的(de)(de)(de)(de)大功率产(chan)品用的(de)(de)(de)(de)都(dou)(dou)是(shi)(shi)恒流源(yuan)(yuan)(yuan)(yuan)(yuan)，小功率产(chan)品用的(de)(de)(de)(de)都(dou)(dou)是(shi)(shi)恒压(ya)(ya)源(yuan)(yuan)(yuan)(yuan)(yuan)。市面(mian)上(shang)绝大多数的(de)(de)(de)(de)开关(guan)电(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)都(dou)(dou)是(shi)(shi)恒压(ya)(ya)源(yuan)(yuan)(yuan)(yuan)(yuan)，只有少部分的(de)(de)(de)(de)是(shi)(shi)恒流源(yuan)(yuan)(yuan)(yuan)(yuan)，恒流源(yuan)(yuan)(yuan)(yuan)(yuan)比恒压(ya)(ya)源(yuan)(yuan)(yuan)(yuan)(yuan)复杂，可以说是(shi)(shi)在恒压(ya)(ya)源(yuan)(yuan)(yuan)(yuan)(yuan)的(de)(de)(de)(de)内(nei)部电(dian)(dian)路上(shang)增加取样电(dian)(dian)阻，通过电(dian)(dian)路来保(bao)证这个(ge)取样电(dian)(dian)阻上(shang)的(de)(de)(de)(de)压(ya)(ya)降不(bu)(bu)变，来实现(xian)恒流输出的(de)(de)(de)(de)。...