Breadboards are a fast and easy way to prototype a circuit, and just about every hobby electronics biz has a power supply that’s supposed to fit a breadboard. IPenguin compared the designs from Seeed Studio, Adafruit Industries, and SparkFun.
What’s features are on your ideal breadboard power supply?
I have a breadboard with power supplies built in. Scrounged it out of a dumpster. +12, -12, +5. It does pay to dumpster dive.