Comparison · Power supplies

Ultra-compact 100 W 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: Ripple: Ultra-compact 100 W power supply, 12 V 8.3 A (650 mV vs. 800); Efficiency: Ultra-compact 100 W power supply, 12 V 8.3 A (89.5 % vs. 87); No load: Ultra-compact 100 W power supply, 12 V 8.3 A (0.05 W vs. 0.2); Temperature rise: 48 V, 2.1 A, 100 W (track) (58 °C vs. 95).

Model	Ultra-compact 100 W 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	650	800
Efficiency, %	89.5	87
No load, W	0.05	0.2
Temperature rise, °C	95	58
Review conclusion	With reservations	With reservations

Ultra-compact 100 W power supply, 12 V 8.3 A: This compact supply manages about 7 A, but the author advises roughly 6 A for continuous use; ripple spikes are very large.

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.