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Comparison · Power supplies

Low-profile 12 V 20 A power supply or 48 V 5 A 240 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: Test current: Low-profile 12 V 20 A power supply (18.1 A vs. 7.5); Ripple: 48 V 5 A 240 W power supply (50 mV vs. 1600).

ModelLow-profile 12 V 20 A power supplyLow-profile 12 V 20 A power supply2019Read review →48 V 5 A 240 W power supply48 V 5 A 240 W power supply2015Read review →
Voltage, V1248
Current, A205
Power, W240240
Test current, A18.17.5
Under load, V8.947.9
Ripple, mV160050
Review conclusionWith reservationsWith reservations

Only in one review: In test 220 W (Low-profile 12 V 20 A power supply); Efficiency 84 % (Low-profile 12 V 20 A power supply).

Low-profile 12 V 20 A power supply: It delivers only about 215–220 W versus 240 W rated; build and filtering are poor, though efficiency is 82–84%.

48 V 5 A 240 W power supply: The power supply performed very well in testing, but needs diode-mounting work and some component replacement or repositioning.

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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