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Comparison · Power supplies

12 V 250 W power supply or PTA-250W-12V

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: 12 V 250 W power supply (300 W vs. 250); Ripple: PTA-250W-12V (50 mV vs. 120); Efficiency: 12 V 250 W power supply (88 % vs. 82); Temperature rise: 12 V 250 W power supply (75 °C vs. 140).

Model12 V 250 W power supply12 V 250 W power supply2025Read review →PTA-250W-12VPTA-250W-12V2025Read review →
Voltage, V1212
Power, W250250
In test, W300250
Ripple, mV12050
Efficiency, %8882
Temperature rise, °C75140
Review conclusionWith reservationsWith reservations

Only in one review: Current 20.8 A (PTA-250W-12V); No load 0.9 W (12 V 250 W power supply).

12 V 250 W power supply: Reliable at roughly 200–250 W; the protection threshold is high, but ripple is low.

PTA-250W-12V: A good supply for about 200 W continuous, but at 250 W the diode assembly and inductor overheat.

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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