thermistor
Sign in to saveA thermistor is a semiconductor type of resistor in which the resistance is strongly dependent on temperature. The word thermistor is a portmanteau of thermal and resistor. The varying resistance with temperature allows these devices to be used as temperature sensors, or to control current as a function of temperature. Some thermistors have decreasing resistance with temperature, while other types have increasing resistance with temperature. This allows them to be used for limiting current to cold circuits, e.g. for inrush current protection, or for limiting current to hot circuits, e.g. to pr
AI overview
A thermistor is a type of electronic resistor whose resistance changes significantly with temperature, making it useful as a temperature sensor or for controlling electrical current based on how hot or cold something is. Different thermistors respond in different ways to temperature changes, which allows them to protect circuits from dangerous current surges either when they first power on or when they get too hot.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Electronic component.component
- Thermistor
- Electronic component.image
- 200px
- Electronic component.caption
- Negative-temperature-coefficient (NTC) thermistor, bead type, insulated wires
- Electronic component.type
- Passive
- Electronic component.working_principle
- Electric resistance
- Electronic component.symbol
- File:Thermistor.svg
- Electronic component.symbol_caption
- Thermistor or varistor symbol
via Wikipedia infobox
Article
16 sectionsContents
- Types
- Basic operation
- Construction and materials
- Steinhart–Hart equation
- ''B'' or ''β'' parameter equation
- Conduction model
- NTC (negative temperature coefficient)
- PTC (positive temperature coefficient)
- Self-heating effects
- Applications
- PTC
- NTC
- History
- See also
- References
- External links
A thermistor is a semiconductor type of resistor in which the resistance is strongly dependent on temperature. The word thermistor is a portmanteau of thermal and resistor. The varying resistance with temperature allows these devices to be used as temperature sensors, or to control current as a function of temperature. Some thermistors have decreasing resistance with temperature, while other types have increasing resistance with temperature. This allows them to be used for limiting current to cold circuits, e.g. for inrush current protection, or for limiting current to hot circuits, e.g. to prevent thermal runaway.
Thermistors are categorized based on their conduction models. Negative-temperature-coefficient (NTC) thermistors have less resistance at higher temperatures, while positive-temperature-coefficient (PTC) thermistors have more resistance at higher temperatures.