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Comparison · Power supplies

QS-48-12 or Dual-voltage 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: QS-48-12 (3.7 A vs. 2.838); Temperature rise: Dual-voltage power supply (84 °C vs. 115).

ModelQS-48-12QS-48-122026Read review →Dual-voltage power supplyDual-voltage power supply2015Read review →
Test current, A3.72.838
Temperature rise, °C11584
Review conclusionNot recommendedWith reservations

Only in one review: Voltage 12 V (QS-48-12); Current 4 A (QS-48-12); Power 48 W (QS-48-12); In test 47 W (Dual-voltage power supply); Under load 14.6 V (Dual-voltage power supply); Ripple 300 mV (QS-48-12); Efficiency 85 % (QS-48-12); No load 0.55 W (QS-48-12); Protection 3.5 A (QS-48-12).

QS-48-12: The transformer overheats; in reality this is closer to a 36 W model than a 48 W one.

Dual-voltage power supply: The PSU works, but its output voltages vary greatly; the author notes the missing inductor on the 12 V channel.

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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