Widerstandsheizern

Widerstandsheizern, also known as thermistors, are electrical devices that provide high thermal resistance in the event of an electrical fault. They are designed to accommodate the thermal stress caused by high electrical resistance in fault conditions, thereby preventing catastrophic overheating.

The core of a Widerstandsheizern consists of a semiconducting material, which exhibits negative temperature coefficient (NTC) or positive temperature coefficient (PTC) properties. When an electrical current flows through the material, it heats up, causing its electrical resistance to decrease in NTC materials or increase in PTC materials.

In the event of a fault, the Widerstandsheizern's electrical resistance increases significantly, providing a high level of thermal stress. This allows the device to absorb electromagnetic interference (EMI) or to provide an electrical fuse function, thus preventing fire hazards.

Widerstandsheizern are commonly used in the protection of electronic circuits against electrical overvoltage and short circuits. They are employed in a wide range of applications, including power electronics, telecommunications, and automotive electronics.

Some of the key characteristics of Widerstandsheizern include high thermal dissipation capacity, low power consumption, and reliability over a long lifespan. They are also known for their simplicity and compact design, making them suitable for integration into electrical systems.

Research and development have enabled the improvement of Widerstandsheizern performance, expanding their use to areas that were previously unachievable.