Psu — Measurement

The following parameters are typically measured during PSU evaluation:

PSU measurement is crucial for several reasons: psu measurement

| Parameter | Why it matters | Good target | |-----------|----------------|-------------| | (12V, 5V, 3.3V) | Prevents system crashes | ±3% or better | | Ripple & noise | High ripple degrades components | <50 mV p-p (12V), <30 mV (5V/3.3V) | | Efficiency | Heat & power cost | ≥80% (basic), ≥90% (Gold/Platinum) | | Hold-up time | Prevents resets during power flickers | >16 ms at full load | | Cross-load regulation | Unbalanced loads (e.g., high 12V, low 5V) | Minimal drift | The following parameters are typically measured during PSU

The two students exchanged excited glances, ready to tackle the next hurdle in their quest to build the ultimate high-performance computer. 50 mV p-p (12V)