Inrush current is a brief, high-magnitude surge of current that occurs the moment a device, like a DC power supply, is switched on. This initial spike can be several times higher than the steady-state operating current before quickly settling to its normal level.
Causes and Risks
This surge is primarily caused by the rapid charging of internal capacitors, which act like a temporary short circuit. While momentary, this high current can stress components, trip circuit breakers, and cause voltage sags that may disrupt other equipment on the same line.
The Matsusada Precision Solution
To ensure system reliability, Matsusada Precision's high-voltage and DC power supplies are engineered with integrated protection features such as soft-start and inrush current limiting circuits.
These integrated features suppress the initial surge, ensuring safe, reliable startups while protecting both the power supply and the connected system. It's a core part of our commitment to Japanese quality and high-performance engineering.
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