D.E.V.I.C.E. is an encyclopedia of terms used by manufacturers of test and measurement equipment. T&M Atlantic created this service to better explain the functionality of instruments it offers, and to highlight the latest developments in the world of T&M Atlantic. We are using such tools as flash and animation to bring words and pictures to life and to create not just an understanding but also an appreciation for technology that goes into the design of every instrument.
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When testing a power supply in this mode the electronic load consumes constant power. If the input voltage rises the electronic load decreases the input current therefore the load power (=V * I) stays at the preset level.
Power supply to load four-wire connection method is designed for the influence decrease (compensation) of the connecting wires resistance. This feature is rather useful because the resistive value of the wires resistance, when connecting the load, distorts the set output voltage of the power supply.