SG32

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Inrush Current Limiters (ICL) are an essential component in many electrical systems to protect them from harm due to sudden, transient spikes in current flow. One such device is the SG32, a silicon-based current limiting device that utilizes a buried junction to limit peak inrush current. In this article we will discuss the application field and working principle of the SG32.

The SG32 is designed primarily for use in switching power supplies and motor control circuits. It is used to protect against inadvertently high inrush currents that can occur when large loads with high capacitance values are applied to an operating system. In such situations, the SG32 will automatically limit the maximum inrush current to preset levels. This ensures that the current does not exceed the load requirements, and avoids damage to the components or system.

The SG32 is designed to be placed in series with either a semiconductor or a motor-driven load. In a switching circuit, the SG32 will react to any inrush current, preventing it from exceeding the rated maximum. When the inrush current is detected, the SG32 will increase its impedance, effectively restricting the current until the load is able to handle it safely. In a motor control circuit, the SG32 will limit the inrush current to levels that reduce the risk of the motor stalling or overheating.

The SG32 is a thyristor-based system, with a buried junction that operates as a fast-acting switch. When power is applied, the junction is in an open state, allowing the current to flow freely. However, if the current exceeds the preset limit, the thyristor switches on and the current flow is reduced. At the same time, this short-circuits the current, reducing it to that required by the load.

The SG32 is an efficient and effective way to control transient inrush currents. It is robustly constructed, with few moving parts, making it ideal for long-lasting power supplies and motor control circuits. It is particularly well-suited to applications that require precise control of the current, such as those involving motors and other power-sensitive loads.

The SG32 offers great versatility, with a wide range of current ratings available. This allows it to be used in a variety of systems, including low- and high-power applications. It can also be used with both AC and DC power sources, making it suitable for a variety of applications. Its small size also makes it ideal for uses where space is at a premium.

The SG32 is a reliable, low-cost solution for limiting inrush current, and is suitable for both commercial and industrial applications. Its easy installation and solid construction make it a favorite choice for many users. With its wide range of current ratings and increased environmental protection, it is an ideal choice for limiting inrush current in switching applications and motor control circuits.

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