I've used a little more the power supply, so here is my experience. I have done the “brutal test” (per the manual) by shorting with a wire the outputs, the power supply recovers very quick. I have done this at a different voltage and current levels. No issues here.
PROS:
1-Very clean power outputs, my DMM does not indicate any AC noise. The scope indicates some noise at a very low level.
2-All three power outputs do not share grounds, they are floating grounds.
3-There are 4 modes of operation: series, parallel, independent, and plus-minus. In the “plus-minus” mode you set it up let’s say -3V and +3V, the output will swing between -3V and +3V volts. In this case, it can be wired as a bipolar source to test a system in which independent positive and negative supplies are needed, or some other investigative projects. I really like this.
4-It remembers the power level you set it up after is power off and on again.
5-Nice color LCD display, not the best but way much better that an old-fashioned LED type.
6-It does not use a toroidal(donut type) transformer that we see on most power supply, this one uses the EI type. There are pros and cons about them, but I think the EI type is much better.
CONS:
1- The fan is very noise, with not load is kind of quiet, but as soon as a load is applied, it becomes very loud.
2- The modes listed above the way they are indicated on the display is confusing. They are shown by some tiny icons on top of the display that you need to either memorize them or keep the manual next to you. They better do some work here.
3- The sound produced by the buzzer is very annoying. It sounds like a cheap toy. I turned it off right away, still makes the beep when is power up.
4- The buttons do not work the way you may expect, sometimes you need to press them more than once, that kind of details. Not really the best keypad.
5- The two variable outputs are not dual-banana compatible. The green jack which is the AC ground is in between the – and +, so is the fixed 5 volts output, it is not dual-banana compatible. These guys were smoking weed when they designed this thing. This sucks!
6- The Amp meter minimum current indicator is somewhere 150mA, less than this you see nothing, a blank display. The same is for voltage. The minimum voltage indicated is about 4mV. My DMM sees 1 mV output, but the display will not show that until the voltage is set to somewhere 4 mV.
7-The front and back covers are plastic, but the sides are metal.
Over all is a good power supply, so far so good, and the price is right.
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