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Comparison · Power supplies

PTA-600W-12V (600 W) or 12 Volt 50 Amp 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: PTA-600W-12V (600 W) (66 A vs. 50); Temperature rise: 12 Volt 50 Amp power supply (107 °C vs. 135).

ModelPTA-600W-12V (600 W)PTA-600W-12V (600 W)2025Read review →12 Volt 50 Amp power supply12 Volt 50 Amp power supply2017Read review →
Current, A5050
Test current, A6650
Ripple, mV250250
Temperature rise, °C135107
Review conclusionWith reservationsWith reservations

Only in one review: Power 600 W (PTA-600W-12V (600 W)); In test 595 W (12 Volt 50 Amp power supply); Under load 11.91 V (12 Volt 50 Amp power supply); Efficiency 88 % (12 Volt 50 Amp power supply); Price 27 $ (12 Volt 50 Amp power supply).

PTA-600W-12V (600 W): In practice, it is a 500–550 W supply: it overheats at 51 A and its voltage sags noticeably under load.

12 Volt 50 Amp power supply: It delivered 595 W in a one-hour test, but sustained power is likely only 450–480 W, with some components overloaded.

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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