Comparison · Power supplies

12 V 8.3 A perforated power supply or 48 V 2.1 A, 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 8.3 A perforated power supply (10 A vs. 1.7); Ripple: 48 V 2.1 A, 100 W power supply (50 mV vs. 400); Temperature rise: 48 V 2.1 A, 100 W power supply (64 °C vs. 92).

Model	12 V 8.3 A perforated power supply2026Read review →	48 V 2.1 A, 100 W power supply2026Read review →
Voltage, V	12	48
Current, A	8.3	2.1
Power, W	100	100
Test current, A	10	1.7
Ripple, mV	400	50
Protection, A	12.5	1.7
Temperature rise, °C	92	64
Review conclusion	With reservations	With reservations

Only in one review: In test 77 W (48 V 2.1 A, 100 W power supply); Efficiency 86.5 % (12 V 8.3 A perforated power supply); No load 0.65 W (12 V 8.3 A perforated power supply).

12 V 8.3 A perforated power supply: A decent conventional supply overall, though its protection threshold is high and ripple could be lower.

48 V 2.1 A, 100 W power supply: Well built, cool-running, and low-ripple, but protection limits output to about 77 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.