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Comparison · Power supplies

QS-72-12 or 12 V 72 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: 12 V 72 W power supply (9 A vs. 7); Ripple: 12 V 72 W power supply (120 mV vs. 200); Efficiency: 12 V 72 W power supply (88 % vs. 87); Temperature rise: QS-72-12 (130 °C vs. 135).

ModelQS-72-12QS-72-122026Read review →12 V 72 W power supply12 V 72 W power supply2025Read review →
Voltage, V1212
Current, A66
Power, W7272
Test current, A79
Ripple, mV200120
Efficiency, %8788
Protection, A8.510
Temperature rise, °C130135
Review conclusionWith reservationsRecommended

Only in one review: In test 120 W (12 V 72 W power supply); Under load 11.31 V (QS-72-12); No load 0.5 W (QS-72-12); Price 7 $ (12 V 72 W power supply).

QS-72-12: Fairly decent, but 6 A causes overheating; the author sees about 4.5–5 A as the practical limit.

12 V 72 W power supply: Well built, but overheats during prolonged use without airflow above about 4.5 A.

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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