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电子负载测试

通(tong)常我们是用电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)来做(zuo)负(fu)(fu)载(zai)测量电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)输(shu)(shu)出(chu)(chu)参数,但(dan)是这样并不准确,因为(wei)(wei)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)也(ye)有(you)输(shu)(shu)出(chu)(chu)阻(zu)(zu)抗(kang)(kang),他的(de)(de)后(hou)面再接(jie)一(yi)个电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)就成了电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)分(fen)(fen)压(ya)(ya)(ya)了,所(suo)以(yi)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)输(shu)(shu)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)测量会不准确,比(bi)真(zhen)实(shi)(shi)值(zhi)(zhi)要(yao)小(xiao),如果你(ni)的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)输(shu)(shu)出(chu)(chu)阻(zu)(zu)抗(kang)(kang)为(wei)(wei)一(yi)定(ding)值(zhi)(zhi),而负(fu)(fu)载(zai)阻(zu)(zu)抗(kang)(kang)无穷(qiong)大,那么(me)电(dian)(dian)(dian)(dian)(dian)(dian)阻(zu)(zu)分(fen)(fen)压(ya)(ya)(ya)后(hou)电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)内阻(zu)(zu)上分(fen)(fen)得的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)可以(yi)忽略,电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)输(shu)(shu)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)即为(wei)(wei)真(zhen)实(shi)(shi)值(zhi)(zhi)。同时(shi)由于负(fu)(fu)载(zai)可能(neng)是感(gan)性负(fu)(fu)载(zai)或容性负(fu)(fu)载(zai),接(jie)上电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)后(hou)负(fu)(fu)载(zai)上得到的(de)(de)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)也(ye)不是电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)真(zhen)实(shi)(shi)输(shu)(shu)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya),因此要(yao)真(zhen)实(shi)(shi)测量电(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)的(de)(de)输(shu)(shu)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)(或电(dian)(dian)(dian)(dian)(dian)(dian)流或输(shu)(shu)出(chu)(chu)功率)必须对负(fu)(fu)载(zai)做(zuo)一(yi)定(ding)的(de)(de)设(she)置,以(yi)确保测得的(de)(de)输(shu)(shu)出(chu)(chu)电(dian)(dian)(dian)(dian)(dian)(dian)压(ya)(ya)(ya)为(wei)(wei)真(zhen)实(shi)(shi)输(shu)(shu)出(chu)(chu)值(zhi)(zhi)。

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