enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Temperature coefficient - Wikipedia

    en.wikipedia.org/wiki/Temperature_coefficient

    A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature. For a property R that changes when the temperature changes by dT , the temperature coefficient α is defined by the following equation:

  3. Self-regulating heater - Wikipedia

    en.wikipedia.org/wiki/Self-regulating_heater

    A positive-temperature-coefficient heating element (PTC heating element), or self-regulating heater, is an electrical resistance heater whose resistance increases significantly with temperature. The name self-regulating heater comes from the tendency of such heating elements to maintain a constant temperature when supplied by a given voltage.

  4. Ceramic heater - Wikipedia

    en.wikipedia.org/wiki/Ceramic_heater

    A ceramic heater as a consumer product is a space heater that generates heat using a heating element of ceramic with a positive temperature coefficient (PTC). [1] [2] [failed verification] Ceramic heaters are usually portable and typically used for heating a room or small office, and are of similar utility to metal-element fan heaters.

  5. Thermistor - Wikipedia

    en.wikipedia.org/wiki/Thermistor

    In this region the device has a small negative temperature coefficient. At the Curie point temperature, the dielectric constant drops sufficiently to allow the formation of potential barriers at the grain boundaries, and the resistance increases sharply with temperature. At even higher temperatures, the material reverts to NTC behaviour.

  6. Heat equation - Wikipedia

    en.wikipedia.org/wiki/Heat_equation

    The temperature approaches a linear function because that is the stable solution of the equation: wherever temperature has a nonzero second spatial derivative, the time derivative is nonzero as well. The heat equation implies that peaks ( local maxima ) of u {\displaystyle u} will be gradually eroded down, while depressions ( local minima ...

  7. Brokaw bandgap reference - Wikipedia

    en.wikipedia.org/wiki/Brokaw_bandgap_reference

    The first term has a negative temperature coefficient; the second term has a positive temperature coefficient (from its ). By an appropriate choice of N {\displaystyle N} and R 1 {\displaystyle R1} and R 2 {\displaystyle R2} , these temperature coefficients can be made to cancel, giving an output voltage that is nearly independent of temperature.

  8. Nvidia stock rises on AI spending, chip deal ahead of earnings

    www.aol.com/finance/nvidia-stock-rises-ai...

    Nvidia stock rose as much as 4% on Tuesday following a series of bullish notes from Wall Street analysts ahead of its earnings report.

  9. Resettable fuse - Wikipedia

    en.wikipedia.org/wiki/Resettable_fuse

    A resettable fuse or polymeric positive temperature coefficient device (PPTC) is a passive electronic component used to protect against overcurrent faults in electronic circuits. The device is also known as a multifuse or polyfuse or polyswitch .