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Comparison · Power supplies

12 V 36 W power supply or Sanmim GPA40B

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: Sanmim GPA40B (5.7 A vs. 3); Ripple: Sanmim GPA40B (37 mV vs. 600).

Model12 V 36 W power supply12 V 36 W power supply2025Read review →Sanmim GPA40BSanmim GPA40B2020Read review →
Voltage, V1212
Power, W3640
Test current, A35.7
Under load, V11.6912.083
Ripple, mV60037
Protection, A3.45.7
Review conclusionWith reservationsRecommended

Only in one review: Current 3.5 A (Sanmim GPA40B); In test 70 W (Sanmim GPA40B); Efficiency 87 % (Sanmim GPA40B); No load 0.3 W (Sanmim GPA40B); Temperature rise 93 °C (Sanmim GPA40B).

12 V 36 W power supply: It handles rated power well, but output capacitance is low and high-frequency ripple is elevated.

Sanmim GPA40B: It regulates voltage excellently and handles a sustained 150% load, though it costs more than budget models.

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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