开关电源份辐射问题

2008-11-7QIANZHENYU12008-11-7QIANZHENYU21.122008-11-7QIANZHENYU3“”3C“”2008-11-7QIANZHENYU4“”30.15MHz30MHz30MHz1000MHz2008-11-7QIANZHENYU52008-11-7QIANZHENYU62.GB9254-1998AB1137472301000304030230dBV/mdBV/mBAMHz10m3m20lg10/310dBV/mB10m30230MHz30dBV/m3m40dBV/m2301000MHz47dBV/m2008-11-7QIANZHENYU73.GB925413m12008-11-7QIANZHENYU84.2008-11-7QIANZHENYU92008-11-7QIANZHENYU102008-11-7QIANZHENYU114.1222008-11-7QIANZHENYU12QTQC8D5D5C92008-11-7QIANZHENYU132008-11-7QIANZHENYU144.2“”2008-11-7QIANZHENYU1533“”HHrA2008-11-7QIANZHENYU16HH()=I/rA/2sinEE()=131.61016f2AI1/rsinHA/mEV/mIAAm2rmfHz2008-11-7QIANZHENYU17E1E()=2631016f2AI1/r2008-11-7QIANZHENYU184.3IfA2442008-11-7QIANZHENYU192008-11-7QIANZHENYU20“”“”2008-11-7QIANZHENYU215SG68405SG68402008-11-7QIANZHENYU226SG684062008-11-7QIANZHENYU23772008-11-7QIANZHENYU244.4Iff50kHz200kHz30MHz2008-11-7QIANZHENYU2520dB/f=1/trtr40dB/135791115f11/tr20dB/f1=tr=In8trtrtrtr82008-11-7QIANZHENYU264.4.19TVSRCDRCRCRCDTVS92008-11-7QIANZHENYU27TVS2008-11-7QIANZHENYU289RCRCD“”2008-11-7QIANZHENYU29RCRCRRRRRMOSFET2008-11-7QIANZHENYU30RCDRCDRCRCRRCRCDCRR2008-11-7QIANZHENYU318dv/dtTVS1.5RCRCDTVS2008-11-7QIANZHENYU3210Vts102008-11-7QIANZHENYU334.4.2di/dt2008-11-7QIANZHENYU34330pF4700pF10000pF027PRPRCS(VS)2fCSFVSVfHz2008-11-7QIANZHENYU352008-11-7QIANZHENYU364.52008-11-7QIANZHENYU37di/dtdv/dt2008-11-7QIANZHENYU3872008-11-7QIANZHENYU3932432008-11-7QIANZHENYU402008-11-7QIANZHENYU412008-11-7QIA[e-mail]