Page 39 - Power Quality in Electrical Systems
P. 39
22 Chapter Two
80
Pl-746-032392
60
Conducted emissions (dBµV) 40
20
0
0 1 2
Frequency (MHz)
Figure 2.10 Typical conducted EMI spectrum from a DC/DC converter [2.9].
[© 1996, Power Integrations, reprinted with permission]
120
FCCA QP
FCCB QP Pl-1622-111695
100
Amplitude (dBµV) 80
60
40
20
0
0.01 0.1 1 10 100
Frequency (MHz)
Figure 2.11 FCC-conducted EMI limits [2.9] for class A and class B equipment.
[© 1996, Power Integrations, reprinted with permission]
