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Comparison · Power supplies

12 V 100 W power supply or 24 V 100 W transformer

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 (11 A vs. 2); Temperature rise: 24 V 100 W transformer (55 °C vs. 106).

Model12 V 100 W power supply12 V 100 W power supply2025Read review →24 V 100 W transformer24 V 100 W transformer2016Read review →
Voltage, V1224
Power, W100100
Test current, A112
Temperature rise, °C10655
Review conclusionRecommendedRecommended

Only in one review: Current 4 A (24 V 100 W transformer); In test 100 W (24 V 100 W transformer); Ripple 25 mV (12 V 100 W power supply); Protection 11 A (12 V 100 W power supply); Price 13 $ (24 V 100 W transformer).

12 V 100 W power supply: A very good supply with low ripple, correctly set protection, and acceptable temperatures.

24 V 100 W transformer: The transformer works normally and reaches at most 52–55°C at full 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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