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  • 08-132021
    可编程直流电源都有哪些应用特点呢?

    可(ke)编程直(zhi)流(liu)电(dian)(dian)(dian)源(yuan)中的非(fei)(fei)静电(dian)(dian)(dian)力(li)是(shi)由负(fu)极指(zhi)向正极的。当可(ke)编程直(zhi)流(liu)电(dian)(dian)(dian)源(yuan)与外(wai)(wai)电(dian)(dian)(dian)路(lu)接通(tong)后,在电(dian)(dian)(dian)源(yuan)外(wai)(wai)部(外(wai)(wai)电(dian)(dian)(dian)路(lu)),由于(yu)电(dian)(dian)(dian)场力(li)的推动,形成由正极到负(fu)极的电(dian)(dian)(dian)流(liu)。而在电(dian)(dian)(dian)源(yuan)内部(内电(dian)(dian)(dian)路(lu)),非(fei)(fei)静电(dian)(dian)(dian)力(li)的作用(yong)则(ze)使电(dian)(dian)(dian)流(liu)由负(fu)极流(liu)到正

  • 07-262021
    金属超声波探伤仪可以探测厚截面铸件

    金属超(chao)声波(bo)探伤仪(yi)作为一种(zhong)应(ying)用比(bi)力(li)遍及的(de)(de)无损检(jian)测(ce)(ce)本领,其重要上风(feng)表如今:检(jian)测(ce)(ce)敏(min)捷(jie)度高,可(ke)以(yi)探测(ce)(ce)微小的(de)(de)裂纹;超(chao)声波(bo)检(jian)测(ce)(ce)仪(yi)具有大(da)的(de)(de)穿透本领,可(ke)以(yi)探测(ce)(ce)厚截面铸件。其重要范围性在于(yu):对付(fu)表面尺寸(cun)庞大(da)和指向性欠好

  • 07-232021
    数字万用表测量精度简述

    数字万用表测量精(jing)(jing)度(du)(du)简述精(jing)(jing)度(du)(du)就(jiu)是(shi)指在特定的(de)(de)(de)(de)使(shi)用环境下,出现的(de)(de)(de)(de)*大允许误差(cha)。换句话说(shuo),精(jing)(jing)度(du)(du)就(jiu)是(shi)用来表明(ming)数字多用表的(de)(de)(de)(de)测量值与被(bei)测信号的(de)(de)(de)(de)实际值的(de)(de)(de)(de)接近程度(du)(du)。模(mo)拟表的(de)(de)(de)(de)精(jing)(jing)度(du)(du)是(shi)按全量程的(de)(de)(de)(de)误差(cha)来计算的(de)(de)(de)(de),而不是(shi)按显示的(de)(de)(de)(de)读(du)

  • 07-122021
    可编程直流电子负载的功能介绍

    可编程直流电(dian)子(zi)负(fu)载可以模(mo)拟真实环境中(zhong)的负(fu)载(用电(dian)器(qi))。它有(you)恒(heng)(heng)流、恒(heng)(heng)阻、恒(heng)(heng)压和恒(heng)(heng)功率(lv)功能,以及短路(lu),过流,动态等(deng)(deng)等(deng)(deng),应该(gai)说所有(you)的电(dian)源(yuan)厂(chang)家都会有(you)用,而且也必须(xu)有(you)。电(dian)子(zi)负(fu)载分为(wei)直流电(dian)子(zi)负(fu)载和交(jiao)流电(dian)子(zi)负(fu)载,由

  • 07-072021
    原子吸收光谱仪的优缺点有哪些?

    原(yuan)子吸(xi)收光(guang)谱(pu)仪基本原(yuan)理仪器从光(guang)源辐射(she)出具有(you)待(dai)(dai)测(ce)元素(su)特征(zheng)谱(pu)线(xian)的光(guang),通过试样蒸(zheng)气时被蒸(zheng)气中待(dai)(dai)测(ce)元素(su)基态原(yuan)子所吸(xi)收,由辐射(she)特征(zheng)谱(pu)线(xian)光(guang)被减(jian)弱的程度来测(ce)定试样中待(dai)(dai)测(ce)元素(su)的含量(liang)。应用因原(yuan)子吸(xi)收光(guang)谱(pu)仪的灵敏、准确、

  • 06-302021
    电子负载的功能特点简述

    电(dian)子负(fu)载的(de)功(gong)(gong)(gong)(gong)能特点简述电(dian)子负(fu)载应该有(you)完善的(de)保(bao)(bao)(bao)(bao)护(hu)功(gong)(gong)(gong)(gong)能。保(bao)(bao)(bao)(bao)护(hu)功(gong)(gong)(gong)(gong)能分为对内(nei)(电(dian)子负(fu)载)保(bao)(bao)(bao)(bao)护(hu)功(gong)(gong)(gong)(gong)能和对外(被测(ce)设备(bei))保(bao)(bao)(bao)(bao)护(hu)功(gong)(gong)(gong)(gong)能。对内(nei)保(bao)(bao)(bao)(bao)护(hu)有(you):过压(ya)保(bao)(bao)(bao)(bao)护(hu),过流(liu)保(bao)(bao)(bao)(bao)护(hu),过功(gong)(gong)(gong)(gong)率保(bao)(bao)(bao)(bao)护(hu),电(dian)压(ya)反向和过温保(bao)(bao)(bao)(bao)护(hu)。对外保(bao)(bao)(bao)(bao)护(hu)有(you):过流(liu)保(bao)(bao)(bao)(bao)护(hu)

  • 06-272021
    哪些因素会影响频谱分析仪的分辨率?

    频(pin)谱分(fen)(fen)析(xi)仪(yi)的(de)(de)频(pin)率(lv)(lv)分(fen)(fen)辨率(lv)(lv)是它(ta)区分(fen)(fen)临近频(pin)率(lv)(lv)分(fen)(fen)量的(de)(de)能(neng)力。很多信(xin)号测(ce)试要求(qiu)频(pin)谱仪(yi)具有较(jiao)高的(de)(de)频(pin)率(lv)(lv)分(fen)(fen)辨率(lv)(lv),只有当频(pin)谱分(fen)(fen)析(xi)仪(yi)的(de)(de)分(fen)(fen)辨能(neng)力足够高时,才会在屏幕上正确(que)反映信(xin)号的(de)(de)特性。频(pin)谱分(fen)(fen)析(xi)仪(yi)的(de)(de)频(pin)率(lv)(lv)分(fen)(fen)辨率(lv)(lv)与(yu)其内部(bu)的(de)(de)中频(pin)滤

  • 06-152021
    数字示波器使用时的那些注意事项

    数字示波(bo)器由于(yu)波(bo)形(xing)触发器、存储、显示、测量(liang)、波(bo)形(xing)数据分析、处理和其他独特的优势,在它的使(shi)用变得越来越普(pu)遍(bian)。由于(yu)模(mo)拟(ni)示波(bo)器,数字示波(bo)器的性能差异(yi),如果使(shi)用不(bu)当,会产生较(jiao)大的测量(liang)误差,从而影响测试任务。带


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