inrushlimiteroj

Inrush limiteroj, also known as inrush current limiters or soft starters, are electronic devices designed to limit the initial surge of current that flows when an electrical device, particularly a motor or transformer, is first powered on. This surge, known as inrush current, can be significantly higher than the device's normal operating current.

The primary function of an inrush limiter is to protect both the power supply and the connected device. High inrush currents can overload power supplies, trip circuit breakers, and cause voltage dips. For the device itself, excessive inrush can stress components, leading to premature wear or failure.

Inrush limiteroj typically achieve this by gradually increasing the voltage or reducing the current supplied to the device over a short period. This controlled ramp-up minimizes the sudden electrical stress. Common technologies used include thermistors, which have a resistance that decreases as they heat up, and solid-state electronic circuits employing thyristors or transistors.

The application of inrush limiteroj is widespread in industrial settings, powering large motors for pumps, fans, and compressors. They are also found in power supplies for sensitive electronics, large lighting systems, and appliances where the initial current draw could be problematic. By managing the inrush current, these devices contribute to system stability, energy efficiency, and extended equipment lifespan.