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Comparison · Power supplies

QS-36-12 or 12 V 40 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 40 W power supply (3.4 A vs. 2.9); Ripple: QS-36-12 (350 mV vs. 650); Efficiency: QS-36-12 (85 % vs. 84); No load: 12 V 40 W power supply (0.1 W vs. 0.7); Temperature rise: 12 V 40 W power supply (60 °C vs. 95).

ModelQS-36-12QS-36-122026Read review →12 V 40 W power supply12 V 40 W power supply2025Read review →
Current, A33.33
Power, W3640
Test current, A2.93.4
Ripple, mV350650
Efficiency, %8584
No load, W0.70.1
Temperature rise, °C9560
Review conclusionWith reservationsRecommended

Only in one review: Voltage 12 V (QS-36-12); In test 35 W (QS-36-12); Protection 2.9 A (QS-36-12).

QS-36-12: Decent overall, but its real power is about 30 W, with substantial no-load ripple.

12 V 40 W power supply: A decent supply with closely set protection, suitable for LED strips; ripple is high for sensitive devices.

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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