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Comparison · Power supplies

12 V 100 W power supply or 24 V 100 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 100 W power supply (9 A vs. 5); Ripple: 12 V 100 W power supply (400 mV vs. 800); Temperature rise: 24 V 100 W power supply (84 °C vs. 128).

Model12 V 100 W power supply12 V 100 W power supply2026Read review →24 V 100 W power supply24 V 100 W power supply2015Read review →
Voltage, V1224
Current, A8.333
Power, W100100
Test current, A95
Ripple, mV400800
Temperature rise, °C12884
Review conclusionWith reservationsRecommended

Only in one review: In test 120 W (24 V 100 W power supply); Under load 23.8 V (24 V 100 W power supply); Efficiency 89 % (12 V 100 W power supply); Protection 9.3 A (12 V 100 W power supply).

12 V 100 W power supply: Efficiency is about 89%, but the output rectifier transistor overheats under heavy load.

24 V 100 W power supply: It runs reliably at 100 W and handled nearly 120 W, though the author notes safety and component-margin concerns.

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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