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Comparison · Power supplies

12 V 300 W power supply or 48 V 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: 12 V 300 W power supply (26 A vs. 7).

Model12 V 300 W power supply12 V 300 W power supply2025Read review →48 V power supply48 V power supply2023Read review →
Voltage, V1248
Power, W300300
Test current, A267
Review conclusionNot recommendedRecommended

Only in one review: Current 6 A (48 V power supply); Under load 10.65 V (12 V 300 W power supply); Ripple 130 mV (12 V 300 W power supply); No load 0.9 W (12 V 300 W power supply); Protection 28 A (12 V 300 W power supply); Temperature rise 83 °C (12 V 300 W power supply); Weight 1100 g (12 V 300 W power supply).

12 V 300 W power supply: The claimed 300 W is not borne out: it is effectively a 200–250 W supply that enters protection when overheated.

48 V power supply: After repair, the PSU works as an approximately 150 W supply, though it was originally rated for 300 W.

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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