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Comparison · Power supplies

Sanmim GPN30E-15 or 5 V 3 W power supply

Two models side by side: measurements taken by the author in their reviews, and their conclusions. The better value in each row is highlighted.

In brief: Based on review measurements: Ripple: Sanmim GPN30E-15 (80 mV vs. 400); Temperature rise: 5 V 3 W power supply (50 °C vs. 100).

ModelSanmim GPN30E-15Sanmim GPN30E-152023Read review →5 V 3 W power supply5 V 3 W power supply2019Read review →
Voltage, V155
Ripple, mV80400
Temperature rise, °C10050
Review conclusionRecommendedNot recommended

Only in one review: Current 2 A (Sanmim GPN30E-15); Test current 4.1 A (Sanmim GPN30E-15); Under load 15.1 V (Sanmim GPN30E-15); Efficiency 82 % (Sanmim GPN30E-15); Protection 4.2 A (Sanmim GPN30E-15); Price 6.76 $ (Sanmim GPN30E-15).

Sanmim GPN30E-15: It handles a twofold overload steadily with moderate heating; its main drawback is the cheap terminal blocks.

5 V 3 W power supply: It works without overheating, but ripple is high, output current barely reaches its rating, and short-circuit protection behaves oddly; not recommended.

Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.

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