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FEATURED ARTICLE
220Vac SMPS Input Smoothing Capacitor Sizing: Calculation and Simulation Example
Calculates the bulk capacitor for a non-PFC 220Vac 60W SMPS based on an allowable ripple of 40Vpp. Evaluates a 100µF initial candidate through tolerance-adjusted capacitance comparisons and rectified waveforms.
ARTICLES
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150 kHz CE Noise After Switching to a 2 kHz DPWM 8-Pole Compressor: Root Cause and Ferrite Countermeasure
After replacing a 6-pole compressor with an 8-pole unit, conducted emission noise at 150 kHz increased. This post traces the common-mode return path, explains…
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Relay Flyback Diode Selection: Sizing by Coil Current and Release Time
Engineering calculation guide for sizing relay flyback diodes and Zener clamps to suppress coil counter-EMF. Covers coil current, reverse voltage margins, release time delay,…
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Solving Light-Load Ripple Without an LDO: TPS54202 Eco-Mode vs TPS54308 FCCM — A Hands-On Comparison
When selecting a step-down converter for ripple-sensitive circuits, picking solely by rated current and efficiency is a recipe for trouble. Converters that engage Eco-mode…
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How to select a bridge rectifier diode
Characteristics of Diodes As shown in the figure, a diode is a component that can allow current to flow only in the direction of…