Don't know of any suggestions off-hand, but I would note that a 30A switching power supply with variable output voltage and current is much easier to screw up than a basic 3A linear power supply. And many of these companies (including Rigol
) seem to even have trouble getting that one right. So I would have a strong preference for something proven like TTI, Kepco, Lambda, etc. You might be able to get a decent deal on a used one if you don't mind a boat anchor.
One thing that can be fun is driving RF into the outputs of a power supply (quite common if you're powering RF gear). It makes some power supplies suddenly decide to deliver a much higher output voltage. Surviving shorts and other misbehaving circuits is also sometimes an issue.
Complaints I've heard about a very similar looking (but not Atten brandend, probably from the same OEM) power supply: current limit won't go below 1A, voltage takes a long time to stabilize after power on, and if you set the voltage to 15V and then switch the range from 15V to 60V, the voltage will jump up to 60V. I've seen conflicting reports about how short circuit proof that supply is: one person reported magic smoke after shorting it for a while, but others didn't have that problem. My impression is that it's not terrible for its price, but not something that I would want in my lab.
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