Test protocol
12 V power supplies from Ukrainian stores
Power supplies from three reviews, purchased from Ukrainian stores. They differ in enclosure and power, so they’re named by type and specifications, as in the reviews themselves.
- 14models
- 3review recommends
- 2026–2026review years
In brief: In the table 14 models: review recommends 3, with reservations 9, does not recommend 2. Lowest ripple in the test: 100 W, 12 V, 8.3 A power supply in metal case, 100 mV. Highest efficiency: Ultra-compact 100 W, 12 V, 8.3 A power supply, 89.5 %. Highest current: Desktop 120 W 10 A, 10 A.
Quick guide: what to choose
Best in its testSealed 100 W 8.3 AA reasonably good supply: protection is set correctly, ripple is acceptable, and heating is within normal limits.
Most compactUltra-compact 100 W, 12 V, 8.3 A power supplyVery compact and powerful for its size, but it falls short of 100 W and has large spike ripple.All models
| Model | Output | Ripple, test | Max. efficiency | Temperature rise | Review conclusion | ||
|---|---|---|---|---|---|---|---|
| 36 W, 12 V 3 A power supply2026 | 12 V / 3 A | 600 mV | — | 138 °C | With reservations | Works for low-power, undemanding loads, but the author says he would not buy it himself. |
| 100 W, 12 V, 8.3 A power supply in metal case2026 | 12 V / 8.3 A | 100 mV | 84 % | 136 °C | With reservations | A budget model with sensible cost-cutting, but with concerns about heat, the case, and low-frequency ripple. |
| Sealed 100 W, 12 V, 8.3 A power supply2026 | 12 V / 8.3 A | 800 mV | 87.5 % | 58 °C | With reservations | Heat and stability are good, but ripple reaches 800 mV at maximum load. |
| Ultra-compact 100 W, 12 V, 8.3 A power supply2026 | 12 V / 8.3 A | 650 mV | 89.5 % | 95 °C | With reservations | Very compact and powerful for its size, but it falls short of 100 W and has large spike ripple. |
| 36 W 3 A adapter2026 | 12 V / 3 A | 400 mV | 84 % | 130 °C | With reservations | It should work, but sustained real power is only about 20–25 W and ripple is moderate. |
| Desktop 36 W 3 A2026 | 12 V / 3 A | 500 mV | 84.5 % | 126 °C | With reservations | It delivers the rated 3 A, but with little thermal headroom; overcurrent protection is set too high and there is no thermal protection. |
| Sealed 36 W 3 A2026 | 12 V / 3 A | 800 mV | 84 % | 70 °C | With reservations | Protection is set correctly and overheating is not an issue, but ripple is high—up to 700–800 mV at low frequency. |
| Desktop 72 W 6 A2026 | 12 V / 6 A | 650 mV | 85.5 % | 126 °C | Not recommended | Neatly built, but sustained output is about 4.5 A rather than the rated 6 A; temperatures and ripple are high. |
| Weather-resistant 100 W 8.3 A2026 | 12 V / 8.3 A | 1000 mV | 86 % | 98 °C | With reservations | Neat enclosure and protection, but limit load to 75–80 W at elevated ambient temperatures; ripple is high. |
| Sealed 100 W 8.3 A2026 | 12 V / 8.3 A | 230 mV | 86 % | 60 °C | Recommended | A reasonably good supply: protection is set correctly, ripple is acceptable, and heating is within normal limits. |
| Desktop 120 W 10 A2026 | 12 V / 10 A | 1000 mV | 85.5 % | 135 °C | Not recommended | Neatly built with functioning protection, but actual power is only about 60 W instead of 120 W, with severe overheating. |
 | 12 V 8.3 A perforated power supply2026 | 12 V / 8.3 A | 400 mV | 86.5 % | 92 °C | With reservations | A decent conventional supply overall, though its protection threshold is high and ripple could be lower. |
| 12 V 8.3 A sealed power supply, 415 g2026 | 12 V / 8.3 A | 170 mV | 85.5 % | 78 °C | Recommended | A solid supply with typical performance and no major issues, though the input capacitor is somewhat undersized. |
| 12 V 8.3 A sealed power supply, 850 g2026 | 12 V / 8.3 A | 100 mV | 88 % | 46 °C | Recommended | A good supply with low ripple and heating, active power-factor correction and higher efficiency, but a relatively high price. |
Conclusion — a brief summary of the review’s findings. See the review itself for details and measurement conditions. Prices are as of the review date and may have changed since then. A dash means this value isn’t mentioned in the review; it’s often shown in the specs photo. The scales show how each model compares with the others on this page: green — good, yellow — average, red — poor.
Frequently asked questions
Why aren’t the power supply brands listed in this table?
The branding was obscured in these reviews by agreement with the sponsor, so the power supplies are named by enclosure type and specifications, as in the author's reviews. See the reviews for details.
Which enclosure is better: sealed or covered?
In these tests, sealed power supplies ran noticeably cooler: 46–78 °C versus 92–138 °C for adapters, desktop power supplies, and enclosed power supplies. Their ripple isn't always lower, so check the specific model.
