From the Q&A

With TJ Byers

Standard Power Supply Designations

Question:

I bought a power supply from an eBay auction that I want to use for some projects. The supply is a K150AU-24, made by Cosel. I need to know what some of the markings on the back are. The screw terminals from left to right read: +V+S, +V, -V, -V-S, FG, AC(L), and AC(N). Can you help me?

Brian Gracia
via Internet

Answer:

Here are the definitions of the terminals.

The remote sense terminals are the voltage regulator inputs and have to be tied to their respective source terminal. Normally, this connection is made inside the power supply. By separating them and making them available from the outside, you can compensate for voltage loss in the wiring between the power supply and the load. Let me illustrate by the way of a drawing.