Power Supply Equations
Table 1. Power Supply Equations
Load Regulation
Load Reg = {(Vn - Vf) / Vf} x 100%
where Load Reg = load regulation;
Vn = no-load output voltage;
Vf = full-load output voltage
Line Regulation
Line Reg = {V1(V2-V3) / V3(V4-V1)} x 100%
where Line Reg = line regulation;
V1 = minimum line voltage;
V2 = maximum load voltage;
V3 = minimum load voltage;
V4 = maximum line voltage
% RMS Ripple (sine)
% rms ripple (sine) = (Vrms / Vf) x 100%
% rms ripple (sine) = (Vpp / Vf) x 35.36%
where Vrms = rms ripple voltage;
Vpp = peak-to-peak ripple voltage;
Vf = dc full-load voltage
% RMS Ripple (sawtooth)
% rms ripple (sawtooth) = (Vrms / Vf) x 100%
% rms ripple (sawtooth) = (Vpp / Vf) x 28.82%
