SL22 2R515

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Inrush current limiters (ICL) is a type of device that is used to limit the rate of rise of current in a circuit to protect it against damange caused by the inrush current. The SL22 2R515 is one such inrush current limiter, which is used in a variety of environments including power supply, transformer, and load applications. In this article, we will discuss the application fields and working principles of the SL22 2R515.

Application Fields:

The SL22 2R515 can be used in a variety of application fields, such as power supply, transformer, and load applications. It is most commonly used in power supply applications, where the limitation of the inrush current is crucial for the protection of the power supply\'s delicate circuits. In transformer applications, the SL22 2R515 can be used to protect the transformer\'s core from saturating due to the inrush current. In addition, the SL22 2R515 can be used in load applications, where it prevents the surge current from damaging the load.

Working Principle:

The SL22 2R515 is essentially a two-component system, which consists of a self-recovery thermistor and a resistor. The two components are connected in series, with the thermistor connected to the power source and the resistor connected to the load. The operation of the SL22 2R515 can be described in three steps:

• When power is first applied to the circuit, the thermistor quickly heats up. This causes the thermistor to become highly resistive, which limits the inrush current.
• Once the thermistor has reached a certain temperature, it starts to cool down. The thermistor\'s resistance then slowly decreases, allowing the inrush current to gradually increase.
• When the thermistor\'s resistance reaches its nominal level, the inrush current is again limited by the resistor. The resistor further limits the inrush current until the system reaches its steady state.

The SL22 2R515 is designed to limit the peak inrush current to below the rated current of the device. This allows the inrush current to be safely diverted to the load, thus preventing damage to the circuit due to the surge.

Conclusion:

The SL22 2R515 is an inrush current limiter which can be used to limit the rate of rise of current in a circuit. It is commonly used in power supply, transformer, and load applications, and works by using a two-component system consisting of a self-recovery thermistor and a resistor. By limiting the inrush current, the SL22 2R515 can prevent damage to the circuit due to the surge current.

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