金陵棋牌

金陵棋牌

» 新闻资讯

要解决LED驱动电源的电磁干扰问题,从硬件上可从以下几个方面入手

文章来自:奥天科技     发布时间:2019-04-09

1、JIANSHAOKAIGUANDIANYUANBENSHENDEGANRAO:RUANKAIGUANJISHU,ZAIYUANYOUDEYINGKAIGUANDIANLUZHONGZENGJIADIANGANHEDIANRONGYUANJIAN,LIYONGDIANGANHEDIANRONGDEXIEZHEN,JIANGDIKAIGUANGUOCHENGZHONGDEdu/dtHEdi/dt,SHIKAIGUANQIJIANKAITONGSHIDIANYADEXIAJIANGXIANYUDIANLIUDESHANGSHENG,HUOGUANDUANSHIDIANLIUDEXIAJIANGXIANYUDIANYADESHANGSHENG,LAIXIAOCHUDIANYAHEDIANLIUDEZHONGDIE。KAIGUANPINLVDIAOZHIJISHU,TONGGUODIAOZHIKAIGUANPINLVfc,BAJIZHONGZAIfcJIQIXIEBO2fc、3fc…SHANGDENENGLIANGFENSANDAOTAMENZHOUWEIDEPINDAISHANG,YIJIANGDIGEGEPINDIANSHANGDEEMIFUZHI。YUANQIJIANDEXUANZE,XUANZEBUYICHANSHENGZAOSHENG、BUYICHUANDAOHEFUSHEZAOSHENGDEYUANQIJIAN。TONGCHANGTEBIEZHIDEZHUYIDESHI,ERJIGUANHEBIANYAQIDENGRAOZULEIYUANQIJIANDEXUANYONG。FANXIANGHUIFUDIANLIUXIAO、HUIFUSHIJIANDUANDEKUAISUHUIFUERJIGUANSHIKAIGUANDIANYUANGAOPINZHENGLIUBUFENDELIXIANGQIJIAN。HELISHIYONGDIANCIGANRAOLVBOQI,EMILVBOQIDEZHUYAOMUDEZHIYI,DIANWANGZAOSHENGSHIDIANCIGANRAODEYIZHONG,TASHUYUSHEPINGANRAO(RFI),QICHUANDAOZAOSHENGDEPINPUDAZHIWEI10KHz~30MHz,ZUIGAOKEDA150MHz。ZAIYIBANQINGKUANGXIA,CHAMOGANRAOFUDUXIAO,PINLVDI,SUOZAOCHENGDEGANRAOJIAOXIAO;GONGMOGANRAOFUDUDA,PINLVGAO,HAIKEYITONGGUODAOXIANCHANSHENGFUSHE,SUOZAOCHENGDEGANRAOJIAODA。YUXUERUOCHUANDAOGANRAO,ZUIYOUXIAODEFANGFAJIUSHIZAIKAIGUANDIANYUANSHURUHESHUCHUDIANLUZHONGJIAZHUANGDIANCIGANRAOLVBOQI。LEDDIANYUANYIBANCAIYONGJIANYISHIDANJIEMILVBOQI,ZHUYAOBAOKUOGONGMOELIUQUANHELVBODIANRONG。EMILVBOQINENGYOUXIAOYIZHIKAIGUANDIANYUANSHIPEIQIDEDIANCIGANRAO。


2、TONGGUOQIEDUANGANRAOXINHAODECHUANBOTUJINGLAIJIANSHAODIANCIGANRAOWENTI:DIYIZHONGQINGKUANGSHIDIANYUANXIANGANRAOKEYISHIYONGDIANYUANXIANLVBOQILVCHU。YIGEHELIYOUXIAODEKAIGUANDIANYUANEMILVBOQIYINGGAIDUIDIANYUANXIANSHANGCHAMOHEGONGMOGANRAODOUYOUJIAOQIANGDEYIZHIZUOYONG。GAISHANPCBBANDEDIANCIJIANRONGXINGSHEJIPCBSHILEDDIANYUANXITONGZHONGDIANLUYUANJIANHEQIJIANDEZHICHENGJIAN,TATIGONGDIANLUYUANJIANHEQIJIANZHIJIANDEDIANQILIANJIE。SUIZHEDIANZIJISHUDEFEISUFAZHAN,PCBDEMIDUYUELAIYUEGAO。PCBSHEJIDEHAOHUAIDUILEDDIANYUANXITONGDEDIANCIJIANRONGXINGYINGXIANGHENDA。SHIJIANZHENGSHI,JISHIDIANLUYUANLITUSHEJIZHENGQUE,YINSHUADIANLUBANSHEJIBUDANG,YEHUIDUILEDDIANYUANXITONGDEKEKAOXINGCHANSHENGBULIYINGXIANG。PCBKANGGANRAOSHEJIZHUYAOBAOKUOPCBBUJU、BUXIANJIJIEDI,QIMUDESHIJIANXIAOPCBDEDIANCIFUSHEHEPCBSHANGDIANLUZHIJIANDECHUANRAO。HAIYOU,YIBANBIANYAQIDIANCIGANRAOYINFADEJIAOLIUSHENGPINLVYIBANWEI50HZZUOYOU,ERDIXIANBUXIANBUDANGDAOZHIDEJIAOLIUSHENG,YOUYUZHENGLIUDIANLUDEBEIPINZUOYONGPINLVYUEWEI100HZ,ZIXIQUFENHAISHIKEYICHAJUEDE。YINCI,ZAISHEJIYINSHUADIANLUBANDESHIHOU,YINGLIUYICAIYONGZHENGQUEDEFANGFA,ZUNSHOUPCBSHEJIDEYIBANYUANZE,BINGYINGFUHEKANGGANRAODESHEJIYAOQIU。


金陵棋牌 3、ZHUDONGDAFUZENGQIANGSHOUGANRAOTIDEKANGGANRAONENGLI:ZAILEDDIANYUANXITONGZHONGSHUJIN/SHUCHUYESHIGANRAOYUANDECHUANDAOXIAN,HEJIESHOUSHEPINGANRAOXINHAODESHIJIANYUAN,WOMENSHEJISHIYIBANYAOCAIQUYOUXIAODECUOSHI:CAIYONGBIYAODEGONGMO/CHAMOYIZHIDIANLU,TONGSHIYEYAOCAIQUYIDINGDELVBOHEFANGDIANCIPINGBICUOSHIYIJIANXIAOGANRAODEJINJIN。ZAITIAOJIANXUKEDEQINGKUANGXIAJINKENENGCAIQUGEZHONGGELICUOSHI(RUGUANGDIANGELIHUOZHECIDIANGELI),CONGERZUDUANGANRAODECHUANBO。FANGLEIJICUOSHI,SHIWAISHIYONGDELEDDIANYUANXITONGHUOCONGSHIWAIPAIJIYINJINSHINEIDEDIANYUANXIAN、XINHAOXIAN,YAOKAOLVXITONGDEFANGLEIJITIMU。CHANGYONGDEFANGLEIJIQIJIANYOU:QITIFANGDIANGUAN、TVS(Transient Voltage Suppression)DENG。QITIFANGDIANGUANSHIDANGDIANYUANDEDIANYADAYUMOUYISHUZHISHI,TONGCHANGWEISHUSHIVHUOSHUBAIV,QITIJICHUANFANGDIAN,JIANGDIANYUANXIANSHANGQIANGCHONGJIMAICHONGDAOJINDADI。TVSKEYIKANCHENGLIANGGEBINGLIANQIEFANGXIANGXIANGFANDEQINAERJIGUAN,DANGLIANGDUANDIANYAGAOYUMOUYIZHISHIDAOTONG。QITEDIANSHIKEYISHUNTAITONGGUOSHUBAINAISHANGQIANADEDIANLIU。