Thermistors (thermal resistors) are electronic components whose electrical resistance changes significantly and predicatibly with temperature. acting as sensitive temperature sensors or current controllers by leveraging this property, typically made from metallic oxides in bead, disk, or cylinder shapes. They are crucial for temperature measurement and control in many devices, divided into NTC (resistance drops as temp rises) and PTC (resistance rises as temp rises) types, used in everything from digital thermometers to car engines.
Applications
- Temperature Sensing: Digital thermometers, thermostats, HVAC systems, engine sensors.
- Current Control: Inrush current limiting in power supplies, battery management systems (overheating protection).
- Household & Industrial: Appliances (ovens, refrigerators), automotive systems, 3D printers.