... -frequency circuit.It plays a role in oscillating and separating with small volume, light weightand nice appearance.40W series AC/DC ... , EN55022, and EN61000-3EMS: EN55024 (EN61204-3), EN61000-4have UL,CSA,CE,TUV,GS,BS,SAA,PSE,EK,FCC ,Brazil, Argentina EMC ... , LVD.CB,IV etc certification for EN61558, EN60950, EN60065 ,EN60335,EN61347 ...