Power Supply Ripple Voltage Calculation | Massachusetts Institute of Technology - Edubirdie

University:
Massachusetts Institute of Technology
Course:
6.101 | Introductory Analog Electronics Laboratory
Academic year:

2021
Views:

291

Pages:

1
Author:

Bryan Washington

POWER SUPPLY RIPPLE VOLTAGE CALCULATION Load Current IL = 100 mA; RL ~ 160 Ω; C = 1000 μF; Vrms = 12 v τ = RC = 160 × 1000 × 10 −6 = 160 ms >> 8.3ms 60 Hz = 16.6 ms iC = C dV dt 120 Hz = 8.3 ms or, for this approximation: Solve for ΔV = i Δt , C iC = C ΔV Δt . where Δ V = ripple voltage, vr. 01 . A × 8.3ms 01 . × 8.3 × 10−3 vr = = ; vr = 0.83volt 1000 μF 10−3 VDCMAX = 1.4 x 12v = 16.8v VDCMIN = 16.8v - 0.83v = 16.0v VDCAVE = [16.8 - 16.0]/2 = 16.4v

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