In power electronics and control engineering, a ramp (or ramp function) represents a signal that increases or decreases linearly at a constant rate. Graphically, it appears as a straight, sloped line.
For power supplies, ramp functions are essential for controlling voltage or current transitions. Unlike instantaneous changes that can stress or damage sensitive components, a ramp ensures a smooth, gradual rise or fall. The speed of this transition is defined as the slew rate.
This contrasts with a step function, where output changes instantly, similar to flipping a switch. While step changes suit digital logic, controlled ramps are required for soft-starting motors, characterizing capacitors, and conducting safe stress tests on semiconductors.
Matsusada Precision DC and high-voltage power supplies feature programmable ramp control via a built-in sequence function. This allows users to define precise rise and fall profiles for voltage and current directly from the unit's internal memory. Complex waveforms and automated test cycles can be executed without an external controller.
Programmable ramp capabilities are ideal for applications requiring repeatable, controlled power delivery, including materials testing, DUT (Device Under Test) protection, power-on sequence simulation, and battery characterization. Supported models include:
DC Power Supplies: R4K-36, R4KF-80, R4K-80, R4GT, PKTS, TB, RK, PVCE, PRKT, RKT, REK/REKJ, PRT/PRTM, PBR/PBRM
High-Voltage Power Supplies: EPR, HARS
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