Comparison · Power supplies

12 V 150 W power supply or S-120-24

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 150 W power supply (13 A vs. 6.25); Ripple: 12 V 150 W power supply (400 mV vs. 800); Efficiency: 12 V 150 W power supply (89 % vs. 88); Temperature rise: S-120-24 (97 °C vs. 130).

Model	12 V 150 W power supply2026Read review →	S-120-242019Read review →
Current, A	12.5	5
Test current, A	13	6.25
Ripple, mV	400	800
Efficiency, %	89	88
Temperature rise, °C	130	97
Review conclusion	With reservations	With reservations

Only in one review: Voltage 12 V (12 V 150 W power supply); Power 150 W (12 V 150 W power supply); In test 150 W (S-120-24); Under load 24.09 V (S-120-24); Protection 13.5 A (12 V 150 W power supply).

12 V 150 W power supply: Efficiency is about 89%, but the snubber and power transistors overheat at 12 A.

S-120-24: Delivers its rated 120 W with stable output, but has poor assembly and filtering and shuts down at 150 W.

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.