A switched-mode power supply has the following characteristics:
Switching frequency: 100 kHz
Maximum switching current: 4 A
Input voltage: 115 V ac (dc voltage on input ripple filter capacitor is 160 V)
Input ripple filter capacitor characteristics:
Capacitance: 470 μF, Voltage rating: 250 V,
ESL: 30 nH ESR: 0.1Ω
Switching transistor rise time: 75 ns
Primary (input) circuit parasitic capacitance to ground: 150 pF
Draw a log-log plot of the envelope of the common-mode conducted emission from 150 kHz to 30 MHz.