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Comparison · Power supplies

120 W power supply or UM-U120S

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: UM-U120S (220 mV vs. 400); Temperature rise: 120 W power supply (84 °C vs. 100).

Model120 W power supply120 W power supply2025Read review →UM-U120SUM-U120S2021Read review →
Current, A1010
Power, W120120
Ripple, mV400220
Temperature rise, °C84100
Review conclusionWith reservationsWith reservations

Only in one review: Voltage 12 V (UM-U120S); Efficiency 85 % (UM-U120S); No load 1.2 W (UM-U120S); Price 11.99 $ (UM-U120S).

120 W power supply: A decent 80–85 W supply, but it does not deliver the claimed 120 W; ripple is higher without an output choke.

UM-U120S: Overall, the power supply is decent, but needs cooling for sustained operation at its rated power.

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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