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Comparison · Power supplies

АД-12-2A or 12 V 1 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: Ripple: 12 V 1 W power supply (100 mV vs. 250).

ModelАД-12-2ААД-12-2A2025Read review →12 V 1 W power supply12 V 1 W power supply2015Read review →
Voltage, V1212
Under load, V12.2812.1
Ripple, mV250100
Review conclusionWith reservationsRecommended

Only in one review: Current 2 A (АД-12-2A); Power 1 W (12 V 1 W power supply); In test 3 W (12 V 1 W power supply); Test current 2 A (АД-12-2A); Efficiency 76 % (АД-12-2A); No load 0.5 W (АД-12-2A); Protection 3 A (АД-12-2A); Temperature rise 128 °C (АД-12-2A); Price 3.89 $ (12 V 1 W power supply).

АД-12-2A: Regulation is excellent, but the output diode gets hot at 2 A; for continuous use, limit current to 1.7–1.8 A.

12 V 1 W power supply: Despite its simple design, it delivered 3 W without overheating, with stable voltage and acceptable ripple.

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.

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