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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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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…
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74HC595 1-Bit Output Shift Issue: Burst Noise and CLK RC Filter Case Study
During an AC power port 1 kV burst test, the 74595 output shifted by 1 bit. Replacing it with an SN74HCS595 reduced the frequency,…
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RK3688 Release Status and Comparison Preparation: Performance and Thermal Baselines from ROCK 5C Measurements
How much faster will the upgrade from RK3588 to RK3688 be? Comparing public specifications with actual 20-step measurements of 25.20 minutes on the ROCK…
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Smoothing Capacitor Lifetime Calculation: High-Temp PCBA Temperature Measurement, Layout, and Vent Clearance
Explains temperature measurement and thermocouple practices for evaluating smoothing capacitor lifetime on high-temperature PCBAs, heat source and heatsink layout, and secondary short-circuit prevention clearance…