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Comparison · Power supplies

Sanmim GPA50A-12 or 19 V 3.42 A 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: Test current: Sanmim GPA50A-12 (8 A vs. 5.4); Ripple: Sanmim GPA50A-12 (55 mV vs. 300); Temperature rise: Sanmim GPA50A-12 (128 °C vs. 130).

ModelSanmim GPA50A-12Sanmim GPA50A-122023Read review →19 V 3.42 A power supply19 V 3.42 A power supply2022Read review →
Test current, A85.4
Ripple, mV55300
Temperature rise, °C128130
Review conclusionRecommendedWith reservations

Only in one review: Voltage 12 V (Sanmim GPA50A-12); Current 4.2 A (Sanmim GPA50A-12); Power 50 W (Sanmim GPA50A-12); In test 96 W (Sanmim GPA50A-12); Under load 11.95 V (Sanmim GPA50A-12); No load 2.2 W (19 V 3.42 A power supply); Protection 5.4 A (19 V 3.42 A power supply).

Sanmim GPA50A-12: The PSU substantially exceeded its rated current and showed low ripple; the author recommends buying it.

19 V 3.42 A power supply: The cheap PSU works, but has high ripple, heat, and weak protection; the author modified it for lighter loads.

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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