I'm looking into getting a decent benchtop power supply ($150-300) for hobby-level electronic design and testing. I don't want to modify or use a computer ATX supply because I want:
- Adjustable voltage
- Adjustable current
- Low noise/ripple
- 1 or 2 voltage outputs
- 0-30VDC (AC not needed)
As I look at various manufacturers' supplies, I am finding a few that seem like good choices, however I've encountered an aspect I am stumped on: Linear or switching?
I am planning primarily on small microcontroller projects, but I'd also like to do some audio and RF projects. I'm concerned a switching supply might have excess noise. Is this a valid concern, or are quality switching supplies more than adequate for clean battery-like power?
Also, should I assume that a supply which does not specify linear/switching on its datasheet is a switching type?