甘肃快3

贴片电容

YUSHUNDIANZIXIANGJIETIEPIANERJIGUANDECANSHUYUJIANCE

甘肃快32019-03-04 16:50:05.0

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我们知道贴片二极管具有容易从P型向N型半导体通过电流,而在相反方向不易通过的的特性。这两种特性合起来就产生了电容器的作用,即蓄积电荷的作用。蓄积有电荷,当然要放电。放电可以在任何方向进行。而二极管只在一个方向有电流流过这种说法,严格来说是不成立的。这种情况在高频时就明显 表现出来。因此,

贴片二极管最大浪涌电流Isurge 贴片二极管允许流过的过量的正向电流。它不是正常电流,而是瞬间电流,这个值相当大。

贴片二极管最大平均整流电流IO 在半波整流电路中,流过负载电阻的平均整流电流的最大值。这是设计时非常重要的值。

贴片二极管最大交流输入电压 甘肃快3在半波整流电路(电阻负荷)上加的正弦交流电压的有效值。这也是选择整流器时非常重要的参数。最大峰值正向电流IFM 正向流过的最大电流值,这也是设计整流电路时的重要参数。

 最大功率P 甘肃快3二极管中有电流流过,就会吸热,而使自身温度升高。最大功率P为功率的最大值。具体讲就是加在 二极管两端的电压乘以流过的电流。这个极限参数对稳压二极管,可变电阻二极管显得特别重要。

CHANGYONGTESHUTIEPIANERJIGUANJIANCE

甘肃快3 (1)WENYATIEPIANERJIGUANDEJIANCE

WENYATIEPIANERJIGUANDEJIANCEZHUYAOBAOKUOYIXIASANXIANG:

甘肃快3 ①、WENYATIEPIANERJIGUANZHENG、FUJIPANBIE。WENYATIEPIANERJIGUANHEPUTONGTIEPIANERJIGUANYIYANG,QIYINJIAOYEFENZHENG、FUJI,SHIYONGSHIBUNENGJIECUO。QIZHENG、FUJIYIBANKEGENJUGUANQIAOSHANGDEBIAOZHISHIBIE,LIRU:GENJUSUOBIAOSHIDEERJIGUANFUHAO、YINXIANDEZHANGDUAN、SEHUAN、SEDIANDENG。RUGUOGUANQIAOSHANGDEBIAOSHIYIBUCUNZAI,YEKELIYONGWANYONGBIAOOUMUDANGCELIANG,FANGFAYUPUTONGTIEPIANERJIGUANZHENG、FUJIPANBIEFANGFAXIANGTONG,CICHUBUZAIZHUISHU。

②、稳压贴片二极管性能好坏判别。稳压贴片二极管与普通贴片二极管的判别方法相同。正常时一般正向电阻为l0 kΩ左右,反向电阻为无穷大。

甘肃快3 ③、WENYATIEPIANERJIGUANWENYAZHIDECELIANG。TIEPIANERJIGUANZHENG、FUJIPANBIESHI

甘肃快3 SHOUXIANJIANGWANYONGBIAOZHIYUR×100 ΩHUOR×1 kΩDANG,XIANYONGWANYONGBIAOHONG、HEILIANGBIAOBIRENYICELIANGTIEPIANERJIGUANLIANGYINJIAOJIANDEDIANZUZHI,RANHOUDUIDIAOBIAOBIZAICEYICI。ZAILIANGCICELIANGJIEGUOZHONG,XUANZEZUZHIJIAOXIAODEYICIWEIZHUN,HEIBIAOBISUOJIEDEYIDUANWEITIEPIANERJIGUANDEZHENGJI,HONGBIAOBISUOJIEDELINGYIDUANWEITIEPIANERJIGUANDEFUJI;SUOCEZUZHIWEITIEPIANERJIGUANZHENGXIANGDIANZU(YIBANWEIJIBAIOUMUZHIJIQIANOUMU),LINGYIZUZUZHIWEITIEPIANERJIGUANFANXIANGDIANZU(YIBANWEIJISHIQIANOUMUZHIJIBAIQIANOUMU)。

甘肃快3 (2)PUTONGTIEPIANERJIGUANXINGNENGHAOHUAIPANBIE

甘肃快3  DUIPUTONGTIEPIANERJIGUANXINGNENGHAOHUAIDEJIANCETONGCHANGZAIKAILUZHUANGTAI(TUOLIDIANLUBAN)XIAJINXING,CELIANGFANGFARUXIA:YONGWANYONGBIAOR×100 Ω DANGHUOR×1 kΩ DANGCELIANGPUTONGTIEPIANERJIGUANDEZHENG、FANXIANGDIANZU。GENJUERJIGUANDEDANXIANGDAODIANXINGKEZHI,QIZHENG、FANXIANGDIANZUXIANGCHAYUEDA,SHUOMINGQIDANXIANGDAODIANXINGYUEHAO。RUOCEDEZHENG、FANXIANGDIANZUXIANGCHABUDA,SHUOMINGTIEPIANERJIGUANDANXIANGDAODIANXINGNENGBIANCHA;RUOZHENG、FANXIANGDIANZUDOUHENDA,SHUOMINGTIEPIANERJIGUANYIKAILUSHIXIAO;RUOZHENG、FANXIANGDIANZUDOUHENXIAO,ZESHUOMINGTIEPIANERJIGUANYIJICHUANSHIXIAO。DANGTIEPIANERJIGUANCHUXIANSHANGSHUSANZHONGQINGKUANGSHI,XUGENGHUANERJIGUAN。

(3)WENYATIEPIANERJIGUANWENYAZHIDECELIANG

甘肃快3   SHOUXIANJIANGWANYONGBIAOZHIYUl0 kΩ DANG,HONGBIAOBIJIEWENYATIEPIANERJIGUANZHENGJI,HEIBIAOBIJIEWENYATIEPIANERJIGUANFUJI,DAIWANYONGBIAOZHIZHENPIANZHUANDAOYIWENDINGZHIHOU,DUCHUWANYONGBIAODEZHILIUDIANYADANGDC10 V KEDUXIANSHANGZHIZHENSUOZHISHIDESHUZHI,RANHOUANXIALIEJINGYANGONGSHIJISUANCHUWENYAERJIGUANDEWENDINGZHI:

 WENYAZHIUz=(10 - DUSHU)×15 V

ZHIDEZHUYIDESHI:YONGCIFACELIANGWENYATIEPIANERJIGUANDEWENYAZHIYAOSHOUWANYONGBIAOGAOZUDANGSUOYONGDIANCHIDIANYADAXIAODEXIANZHI。JIZHINENGCELIANGGAOZUDANGSUOYONGDIANCHIDIANYAYIXIAWENYAZHIDEWENYATIEPIANERJIGUAN。

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