Comparison · Power supplies

Track power supply, 48 V 2.1 A, 100 W or FSA-12V 100W

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: FSA-12V 100W (5.6 A vs. 2.5); Ripple: FSA-12V 100W (200 mV vs. 800); Temperature rise: FSA-12V 100W (53 °C vs. 58).

Model	Track power supply, 48 V 2.1 A, 100 W2026Read review →	FSA-12V 100W2025Read review →
Voltage, V	48	12
Power, W	100	100
Test current, A	2.5	5.6
Ripple, mV	800	200
Temperature rise, °C	58	53
Review conclusion	With reservations	Recommended

Only in one review: Current 2.1 A (Track power supply, 48 V 2.1 A, 100 W); In test 60 W (FSA-12V 100W); Under load 11.81 V (FSA-12V 100W); Efficiency 87 % (Track power supply, 48 V 2.1 A, 100 W); No load 0.2 W (Track power supply, 48 V 2.1 A, 100 W); Protection 3.5 A (Track power supply, 48 V 2.1 A, 100 W).

Track power supply, 48 V 2.1 A, 100 W: A compact supply with good power and moderate heating, but its protection-trip current is much too high.

FSA-12V 100W: It runs stably at about 60 W with acceptable ripple and temperature; the author considers it good if treated as a 60 W supply.

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.