Current limiting element and light emitting diode device
A technology of light-emitting diodes and current-limiting components is applied in lighting devices, emergency protection circuit devices for limiting overcurrent/overvoltage, electrical components, etc. Achieve the effect of avoiding LED high heat, avoiding LED burning, and prolonging the service life of LED.
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[0024] In order to make the above-mentioned and other technical content, features and advantages of the present invention more obvious and understandable, the following specifically cites relevant embodiments, together with the attached drawings, for detailed description as follows:
[0025] Since the resistance of conductive composite materials with positive temperature coefficient (PositiveTemperatureCoefficient; PTC) characteristics responds sensitively to temperature changes, it can be used as a material for current sensing elements and has been widely used in overcurrent protection elements or circuit elements. When an over-current or over-temperature phenomenon occurs in a circuit or battery, its resistance value will instantly increase to a high resistance state (at least 102Ω), and the excess current will be reduced. The temperature corresponding to the instantaneous rise of the resistance is called the trigger critical temperature. Before the trigger critical temperatu...
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