So fellas. Better late than never. Kudos to LaserShip, they only delayed the delivery by half a week.
So, as it was mentioned earlier, the brick has DoE Level 6 efficiency rating and I can say that … Yes, it has the claimed 88% of efficiency. But not everything as simple, as it may seem.
With the help of the static load and AC current probe (along with the MSO) I was able to quickly gather some info on this.
So let’s begin.
All measurements are done on the US grid (@ 120VAC)
Idle power consumption is 2.67W (with zero load applied).
| DC Load | VDC (out) | AC Current (in) | VAC (in) |
|---|---|---|---|
| 1A | 23.74V | 0.417A | 119.1V |
| 2A | 23.57V | 0.451A | 119.2V |
| 3A | 23.39V | 0.667A | 119.3V |
| 4A | 23.21V | 0.886A | 118.8V |
So we get:
| At load: | Efficiency |
|---|---|
| 1A | 47.8% |
| 2A | 87.7% |
| 3A | 88.2% |
| 4A | 88.2% |
So… as you can see, except low load, this PSU does perform quite efficiently for a power brick. Good Job BL, you sourced a good brick. I wish more companies would do that.
However, at 4A load, the power consumption off the wall is 105W, while the P_out is only 93W. That means it releases 12W in heat, which at 4A load results in quite a toasty brick (uncomfortably toasty).
After 1 hour of constant 4A draw the efficiency dropped a bit to 87% which increased the wall consumption a bit (106W).
