Comparison · Power supplies

100 W sealed power supply, 12 V 8.3 A or 48 V, 2.1 A, 100 W (track)

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: Efficiency: 100 W sealed power supply, 12 V 8.3 A (87.5 % vs. 87); No load: 48 V, 2.1 A, 100 W (track) (0.2 W vs. 0.5).

Model	100 W sealed power supply, 12 V 8.3 A2026Read review →	48 V, 2.1 A, 100 W (track)2026Read review →
Voltage, V	12	48
Current, A	8.3	2.1
Power, W	100	100
Ripple, mV	800	800
Efficiency, %	87.5	87
No load, W	0.5	0.2
Temperature rise, °C	58	58
Review conclusion	With reservations	With reservations

100 W sealed power supply, 12 V 8.3 A: It handles heat well and operates steadily, but ripple reaches 800 mV at maximum current.

48 V, 2.1 A, 100 W (track): A compact supply with honest output and low heating, but its protection trip current is much too high.

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.