Power Supplies

Power supplies here cover benchtop and rack DC supplies, programmable AC power sources, electronic loads for sinking rather than sourcing current, and source measure units that do both while measuring precisely.

Keysight, EA Elektro-Automatik, Keithley, Chroma, Instek and Preen make up the range. Beyond voltage and current, three specifications usually decide the choice. The first is whether you need single-quadrant sourcing or regenerative operation that returns energy rather than dissipating it as heat, which changes both cooling requirements and running cost. The second is programming resolution and readback accuracy, which is what separates a general-purpose bench supply from an instrument you can use in a test sequence. The third is protection behaviour, since overvoltage, overcurrent and reverse-polarity handling determine what happens to your device under test when something goes wrong. Tell us the load profile and whether the supply needs to sink current.