SG26

Inrush current limiters (ICL) are a type of device used to protect various electronic components from high currents. This article will discuss the application field and working principle of SG26, one particular type of ICL.

SG26 is a linear current-limiting device with fast response time, operating in a voltage range from 10 to 18 volts. It is designed to protect electronic components such as power supplies, motors and audio equipment from high inrush currents resulting from power-cycling and voltage transients. The device limits inrush current up to 3.5 amperes per each module, with a total current of 18 A per module string.

In operation, the device works by limiting the current draw upon power-up due to high capacitance loads. The device uses a linear current-limiting circuit, where the current is limited to a certain set level. The device reduces the voltage drop across the conducting modules as the current increases, thus protecting electronic components from high inrush currents.

The device employs the same current limiting features as found in circuit breakers. Upon power-up, the SG26 device determines the size of the current draw and adjusts the voltage drop across its modules. In case of a current spike, the current is limited to a preset maximum and the voltage is decreased. This ensures that the application is protected from excessive current and from dangerous voltage transients.

SG26 is also suitable for use in systems employing multiple power sources. The device can be configured to protect each individual power source, thus limiting the total current draw from all sources. This configuration limits the maximum current draw from any one power source and prevents the system from experiencing voltage transients as a result of current spikes.

The SG26 device is also highly reliable and requires only a minimal amount of maintenance. The device has a fail-safe design to ensure that it remains operational even in the event of an over-voltage or under-voltage. The device is available in both standard and reinforced construction and is designed to operate in extreme temperatures ranging from -15°C to +125°C. This makes the device highly suitable for applications in harsh environments.

In summary, SG26 is an effective device for protecting electronic components from high inrush currents. The device offers high reliability and requires minimal maintenance due to its fail-safe design. It is suitable for use in systems with multiple power sources, and can be used in extreme temperatures as well. Its linear current-limiting circuit limits current to preset levels, thus protecting components from over-current and resulting voltage transients.