SG27

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Inrush Current Limiters (ICL) are devices commonly used in electronic circuits. They are used to prevent or reduce the high inrush current that can possibly damage components during power up. The most commonly used type of ICL is called SG27. It is an auto-reset type inrush current limiter, designed to limit the inrush current to a set value.

The SG27 uses a combination of two NTC thermistors physically arranged into a parallel circuit. These thermistors are typically made from ceramic materials with special resistive elements incorporated into them. When the power supply is switched on, as soon as a voltage level is reached, the NTC thermistors begin to resist the flow of current. The resistance increases rapidly, then drops off slowly as the temperature rises within the device. This limits the total amount of current that is allowed to be drawn through the circuit.

The main benefit to using the SG27 is that it allows a safe level of inrush current to pass through the circuit during power up, while reducing the amount of current that can potentially damage components. It also works to stabilize the power supply voltage and reduce the overall power losses. Overheating and component stress due to high inrush currents is reduced significantly. Energy efficiency is also improved, as the SG27 reduces the amount of power draw during power up.

The SG27 has a wide range of applications. It is most commonly used in power supplies, motors, and other applications that require current to be limited during start up. It can also be used in a variety of circuits that are susceptible to static pressures, such as audio amplification, HMI systems and more.

Aside from being an effective current limiter, the SG27 also provides an environment-friendly option. It is design to reduce the impact on the environment by conserving energy through improved efficiency. This greatly reduces the carbon footprint of the device, making it more acceptable to end users.

In conclusion, the SG27 is an effective inrush current limiter that provides a safe level of power to circuits while reducing the amount of energy required during power up. It is suitable for a wide range of applications, from power supplies and motors, to audio amplification and HMI. It is also energy efficient and environment friendly.

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