When turning on a regulated DC power supply, the Inrush current flows higher than the rated current instantaneously.
At turn-on, a high current exceeding the rated value flows through the circuit immediately, reaching the peak current value. The current value then drops and gradually converges to the rated current value. The inrush current may put a lot of stress on the circuit and be regarded as an overload or short circuit. In some cases, it may cause the breaker to trip or the voltage to drop, and shut down the equipment connected.
Inrush currents could cause by several reasons. In the case of equipment with capacitors, a high current may flow because the capacitors must first be charged. Regarding the devices with filaments, as the resistance of the filament is low before heating the filament, there is highly possible the current flowing gets very high.
Matsusada Precision provides a broad product lineup of power supplies to protect the circuit from the inrush current occurrence. Also, our products are available to support supply power while adjusting to operating within their ratings.
Information on related articles in Technical Knowledge
- What is a Power Supply? Types and Applications
- What is a Power Supply? (Basic Knowledge)
- Safety and Usage of High Voltage Power Supply
- What is DC power supply? (Basic Knowledge)
- What is a Bipolar Power Supply? (Basic Knowledge)
- What is an Electronic Load? (Basic Knowledge)
- What is an AC Power Source (Basic Knowledge)
- Linear vs. Switching Power Supplies: Key Differences Explained
- Types of X-ray tubes and high-voltage power supplies
- High Voltage Measurement Method
- How to choose the DC power supply? Explanation of the points.
- Difference between DC power and AC power
- For New Electronics Engineers, How to Use the Power Supply Safely
- Installation of DC Power Supply and remote sensing correctly and safely
- How to Select a High Voltage Power Supply for Laboratory Analyzers
- Basics of amplifiers, how to use the amplifier and precautions
- Method of Generating Direct Current (DC) Power