| Any switched-mode power
supply (SMPS) consists of a bridge circuit, capacitor, and PWM IC, which
switches the current through the inductor (a). This SMPS (b) includes the
impedance of a line-impedance-stabilization network (LISN). The actual LISN sits
between the mains and the power supply (c) to isolate the device under test from
incoming perturbations and to route the noise components to the spectrum
analyzer. You can use the final model (d) to test the power supply and the
effectiveness of your filter design. |
