Lämpötilavaliolla

Lämpötilavaliolla, meaning temperature coefficient in Finnish, is a term used in physics and engineering to describe how a property of a material changes with temperature. This property can be electrical resistance, voltage, capacitance, or others. The temperature coefficient is typically expressed as a percentage change per degree Celsius or Kelvin.

For example, the temperature coefficient of resistance indicates how much the electrical resistance of a conductor or semiconductor increases or decreases for every degree Celsius rise in temperature. Materials with a positive temperature coefficient of resistance, like most metals, see their resistance increase with rising temperature. Conversely, materials with a negative temperature coefficient, such as some semiconductors, exhibit decreasing resistance as temperature increases.

Understanding the temperature coefficient is crucial for designing electronic components and systems that need to operate reliably across a range of temperatures. It helps in selecting appropriate materials and in predicting performance variations. Devices like thermistors are specifically designed to exploit their significant temperature coefficient of resistance for temperature sensing applications. Accurate knowledge of these coefficients allows for compensation techniques to be implemented, ensuring stable and predictable device behavior.