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Comparison · Power supplies

PTA-150W-12V or 50 V 2.5 A 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: In test: PTA-150W-12V (180 W vs. 150); Temperature rise: 50 V 2.5 A power supply (55 °C vs. 103).

ModelPTA-150W-12VPTA-150W-12V2025Read review →50 V 2.5 A power supply50 V 2.5 A power supply2019Read review →
Voltage, V1250
In test, W180150
Temperature rise, °C10355
Review conclusionWith reservationsRecommended

Only in one review: Current 2.5 A (50 V 2.5 A power supply); Power 150 W (PTA-150W-12V); Test current 1.85 A (50 V 2.5 A power supply); Ripple 70 mV (PTA-150W-12V); Efficiency 84 % (PTA-150W-12V).

PTA-150W-12V: A decent budget supply for undemanding uses, but input capacitance is low and low-frequency ripple is significant.

50 V 2.5 A power supply: The supplies were modified to 43.5 V each and connected in series; they remained only warm under load.

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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