一、電子負載(zai)知(zhi)識解答

　　負載(zai)是消耗(hao)電能(neng)(neng)(neng)的裝置,其可以將(jiang)電能(neng)(neng)(neng)轉(zhuan)換成機械(xie)能(neng)(neng)(neng).、熱能(neng)(neng)(neng)、光能(neng)(neng)(neng)、所需的風(feng)能(neng)(neng)(neng)或電能(neng)(neng)(neng).常用負載(zai)如:白(bai)熾(chi)燈、變壓器、電爐(lu)、電機、冰箱、空調.

　　電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)并不(bu)完(wan)全(quan)等同(tong)于(yu)正常(chang)負(fu)(fu)(fu)載(zai)(zai)(zai).電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)具(ju)有測(ce)試功(gong)能.它(ta)是用(yong)于(yu)模(mo)擬(ni)(ni)其他(ta)電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)備的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)環境的(de)(de)(de)硬件.模(mo)擬(ni)(ni)狀態參數可以(yi)任(ren)意改變,以(yi)測(ce)試各種常(chang)見狀態和(he)限制(zhi)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)氣(qi)(qi)設(she)備.在州下(xia)的(de)(de)(de)表現.電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)屬于(yu)儀表類別,也(ye)稱(cheng)為電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)表.它(ta)由(you)(you)(you)一個(ge)電(dian)(dian)(dian)(dian)(dian)阻器(qi)、電(dian)(dian)(dian)(dian)(dian)感(gan)器(qi)、電(dian)(dian)(dian)(dian)(dian)容器(qi)、晶體管、集成(cheng)電(dian)(dian)(dian)(dian)(dian)路組(zu)成(cheng).由(you)(you)(you)于(yu)模(mo)擬(ni)(ni)電(dian)(dian)(dian)(dian)(dian)源環境,它(ta)不(bu)是固定的(de)(de)(de),基本(ben)上所有負(fu)(fu)(fu)載(zai)(zai)(zai)都是程(cheng)控負(fu)(fu)(fu)載(zai)(zai)(zai)(也(ye)稱(cheng)為可編(bian)程(cheng)電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)).由(you)(you)(you)于(yu)DC =電(dian)(dian)(dian)(dian)(dian)壓×電(dian)(dian)(dian)(dian)(dian)流下(xia)的(de)(de)(de)功(gong)率(lv)(lv),AC環境下(xia)的(de)(de)(de)功(gong)率(lv)(lv)算(suan)法(fa)比較復(fu)雜(za),因此應用(yong)和(he)市場(chang)大(da)多是直接過(guo)程(cheng)控制(zhi)電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)!電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)的(de)(de)(de)應用(yong)領域?有用(yong)的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)力(li)需要(yao)使(shi)用(yong)電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai),從手表中的(de)(de)(de)鋰電(dian)(dian)(dian)(dian)(dian)池(chi)到(dao)電(dian)(dian)(dian)(dian)(dian)源組(zu)、.由(you)(you)(you)于(yu)功(gong)率(lv)(lv)的(de)(de)(de)不(bu)同(tong),大(da)功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)(dian)子負(fu)(fu)(fu)載(zai)(zai)(zai)基本(ben)上適(shi)用(yong)于(yu)大(da)功(gong)率(lv)(lv)電(dian)(dian)(dian)(dian)(dian)力(li)環境,如:動力(li)電(dian)(dian)(dian)(dian)(dian)池(chi)、電(dian)(dian)(dian)(dian)(dian)動車、充電(dian)(dian)(dian)(dian)(dian)樁、通(tong)訊電(dian)(dian)(dian)(dian)(dian)源、電(dian)(dian)(dian)(dian)(dian)力(li)系(xi)統等

　　根據不(bu)同的接入電流(liu),分為(wei)直(zhi)流(liu)電子(zi)負(fu)載(zai)和交流(liu)電子(zi)負(fu)載(zai).一般有恒(heng)(heng)流(liu)、恒(heng)(heng)壓、固定電阻、恒(heng)(heng)功(gong)(gong)率(lv)、短路和動態負(fu)載(zai)多(duo)種(zhong)模(mo)式.高(gao)品(pin)質(zhi)的電子(zi)負(fu)載(zai)具有完善(shan)的保(bao)(bao)護(hu)(hu)(hu)功(gong)(gong)能.保(bao)(bao)護(hu)(hu)(hu)功(gong)(gong)能分為(wei)內部(電子(zi)負(fu)載(zai))保(bao)(bao)護(hu)(hu)(hu)功(gong)(gong)能和外部(測試設(she)備)保(bao)(bao)護(hu)(hu)(hu)功(gong)(gong)能.內部保(bao)(bao)護(hu)(hu)(hu):過(guo)(guo)壓保(bao)(bao)護(hu)(hu)(hu)、過(guo)(guo)流(liu)保(bao)(bao)護(hu)(hu)(hu)、過(guo)(guo)功(gong)(gong)率(lv)保(bao)(bao)護(hu)(hu)(hu)、電壓反向(xiang)和過(guo)(guo)溫保(bao)(bao)護(hu)(hu)(hu).外部保(bao)(bao)護(hu)(hu)(hu):流(liu)保(bao)(bao)護(hu)(hu)(hu)、過(guo)(guo)功(gong)(gong)率(lv)保(bao)(bao)護(hu)(hu)(hu)、負(fu)載(zai)電壓和低壓保(bao)(bao)護(hu)(hu)(hu).

　　電(dian)(dian)(dian)子負載廣泛用(yong)于電(dian)(dian)(dian)池、電(dian)(dian)(dian)源、傳感器、充(chong)電(dian)(dian)(dian)器....實驗、放電(dian)(dian)(dian)、老化(hua)、電(dian)(dian)(dian)參(can)數性能測試.

　　1、直流電(dian)(dian)子(zi)負(fu)載(zai)DC電(dian)(dian)子(zi)負(fu)載(zai)是能夠吸收DC電(dian)(dian)力并(bing)消耗吸收的(de)DC能量(liang)(liang)消耗、以便存(cun)儲或(huo)反饋到電(dian)(dian)網(wang)的(de)電(dian)(dian)子(zi)電(dian)(dian)路裝置.可以調節或(huo)設置器件吸收的(de)電(dian)(dian)流,端(duan)口輸入特性符合歐姆定律.電(dian)(dian)子(zi)負(fu)載(zai)大量(liang)(liang)應(ying)用(yong).它主要通過模擬物理負(fu)載(zai)和(he)負(fu)載(zai)波形來測(ce)試(shi)電(dian)(dian)源的(de)規格,并(bing)測(ce)試(shi)充電(dian)(dian)器、電(dian)(dian)池的(de)壽命特性和(he)電(dian)(dian)力電(dian)(dian)子(zi)元(yuan)件的(de)參(can)數特性.

　　2、交流電子負載

　　交流(liu)電(dian)子(zi)負載是一種(zhong)可(ke)以模(mo)(mo)擬實(shi)際負載某(mou)(mou)些(xie)特性的電(dian)子(zi)設備(bei).它(ta)不僅可(ke)以模(mo)(mo)擬不同值的電(dian)阻(zu)器(qi)(qi)、電(dian)感器(qi)(qi)、電(dian)容器(qi)(qi)及其(qi)組合,還可(ke)以模(mo)(mo)擬非線性負載的某(mou)(mou)些(xie)特性.電(dian)子(zi)負載控(kong)制(zhi)輸入電(dian)流(liu)達到模(mo)(mo)擬各種(zhong)負載的目的.它(ta)具有(you)調(diao)整(zheng)方(fang)便,、,通用性強,、,精度高,、,穩定性好等優點.

　　二、選擇電子負(fu)載是需要(yao)注(zhu)重的幾點

　　1.電(dian)(dian)壓,電(dian)(dian)流和(he)功率(lv)選(xuan)擇(ze);精度和(he)分辨(bian)率(lv)選(xuan)擇(ze).根據測試來源(電(dian)(dian)源、電(dian)(dian)池、充電(dian)(dian)樁..)選(xuan)擇(ze)電(dian)(dian)子(zi)負(fu)載電(dian)(dian)壓、電(dian)(dian)流、電(dian)(dian)源、的(de)精度和(he)分辨(bian)率(lv).

　　2.基本功能

　　市場上(shang)有(you)三到六種電子(zi)負載(zai)編(bian)程(cheng)模式.大多(duo)數(shu)電子(zi)負載(zai)具(ju)有(you)以下(xia)四種基(ji)本編(bian)程(cheng)模式:恒定電流、恒定電壓、恒定電阻和恒定功率;根據待測源,選擇具(ju)有(you)相應(ying)功能的電子(zi).加載(zai).

　　3.動態加載

　　變(bian)(bian)(bian)化斜率:當電(dian)子(zi)負(fu)載變(bian)(bian)(bian)化時,變(bian)(bian)(bian)化率從變(bian)(bian)(bian)化量(liang)的(de)10%變(bian)(bian)(bian)化到90%,單位(wei)A / mS變(bian)(bian)(bian)為CC狀態,A / uS.

　　響應時間(jian):電子負(fu)載可(ke)以更改(gai)的最短時間(jian),以美國(guo)為單位.

　　電子負(fu)載(zai)的(de)動態(tai)(瞬態(tai))頻率:動態(tai)頻率(僅包(bao)含一(yi)個上升沿(yan)或(huo)一(yi)個下降沿(yan),或(huo)每單(dan)位時間的(de)變化次數),瞬態(tai)頻率(一(yi)個周期包(bao)括上升沿(yan)+下降沿(yan)).

　　4.序列功能

　　序(xu)列函數是指按時間順(shun)序(xu)將許多(duo)穩態設置組(zu)合成測(ce)量過(guo)程.它可以完成產品的(de)整個質量參(can)數的(de)測(ce)量.此功能大(da)大(da)簡化了繁瑣的(de)設置并減少了測(ce)試(shi)工作(zuo)量.通過(guo)存儲(chu)設置和(he)調用功能,它大(da)大(da)簡化了操作(zuo).

　　5.模擬負載(外部編程輸入)

　　此功(gong)能(neng)是一個功(gong)能(neng)集,用于實現更(geng)復雜的(de)(de)電(dian)子(zi)負(fu)(fu)載(zai)(zai)變(bian)化.動態負(fu)(fu)載(zai)(zai)是模(mo)擬梯(ti)形波變(bian)化的(de)(de)負(fu)(fu)載(zai)(zai)函數,該函數極大地擴(kuo)展了電(dian)子(zi)負(fu)(fu)載(zai)(zai)的(de)(de)執(zhi)行方式(shi).信號發生器可以產生電(dian)壓低(di)于10V的(de)(de)波形信號,并可以模(mo)擬電(dian)子(zi)負(fu)(fu)載(zai)(zai).6.保護和(he)其他(ta)功(gong)能(neng)選擇(ze).