So, here’s a rhetorical question: What voltage/current curve is to reasonably expected from a rated power supply? (Note: I already ranted about a couple of 5V 2A supplies that failed to deliver, hence the “another” in the title.)
Your would think that I’d learn by now and shouldn’t be so pissed off when I test a power supply only to find it to deliver just a fraction of its rated performance. Case in point: I just took delivery of a rated 12V 1A switched-mode power supply (wall wart) that I bought on eBay. I plan to use it to drive a string of RGB LEDs so really wanted to get at least 0.7A at a supply of around least 10V – basically asking for about 7W, approx. 60% of its rated power delivery.
So, another rhetorical question: Is this an unreasonable expectation for a switched-mode power supply?