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LM3409HV 制作的DC-DC 电源

Other Parts Discussed in Thread: LM3409HV

我有一款采用LM3409HV制作的DC-DC电源(前面接AC-DC电源),用于面板灯(该面板灯要求接地)。在测试FCC过程中面板灯外壳不接地,

传导有11-12DB余量,接地后150KHz处超标13-14dB ,这种情况怎样处理呀,请问哪位大神可以支援一下,在下深表感激!