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Comparison · Power supplies

120-watt power supply or RPS-120-27

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: 120-watt power supply (7.3 A vs. 5.5); Ripple: RPS-120-27 (75 mV vs. 400).

Model120-watt power supply120-watt power supply2025Read review →RPS-120-27RPS-120-27Mean Well · 2018Read review →
Voltage, V1227
Current, A104.5
Power, W120121.5
Test current, A7.35.5
Ripple, mV40075
Review conclusionWith reservationsWith reservations

Only in one review: In test 135 W (RPS-120-27); Under load 11.97 V (120-watt power supply); Efficiency 90 % (RPS-120-27); Protection 7.6 A (120-watt power supply); Temperature rise 84 °C (120-watt power supply).

120-watt power supply: Decent as an 80–85 W supply at 230 V, but it does not deliver the claimed 120 W and has higher ripple.

RPS-120-27: Well built and handles load tests, but it buzzes noticeably, has high ripple, and is difficult to repair.

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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