3R System AK 500 Power Supply Review
Overload Tests
Contents
Below you can see the maximum we could pull from this power supply. We couldn’t pull more than that because the power supply shut down, showing that its protections were working well. During this test, all voltages were still inside the tighter 3% regulation, but ripple and noise levels at the +12 V, -12 V, and +5 V outputs were touching or slightly surpassing the maximum allowed levels at 122.3 mV, 115.6 mV, and 53.4 mV, respectively.
| Input | Overload Test |
| +12VA | 20 A (240 W) |
| +12VB | 20 A (240 W) |
| +5 V | 10 A (50 W) |
| +3.3 V | 10 A (33 W) |
| +5VSB | 3 A (15 W) |
| -12 V | 0.5 A (6 W) |
| Total | 589.4 W |
| % Max Load | 117.9% |
| Room Temp. | 43.4° C |
| PSU Temp. | 46.4° C |
| AC Power | 752 W |
| Efficiency | 78.4% |
| AC Voltage | 110.0 V |
| Power Factor | 0.990 |