PTC-Thermistor mit verbessertem Wärmestosswiderstand

PTC-Thermistor mit verbessertem Wärmestosswiderstand

A PTC thermistor (21) has a disk-shaped main body (22) with electrodes (26, 27) on its main surface (23, 24) which are facing mutually away from each other such that, during an initial period after a potential difference is applied between these electrodes (26, 27), the side surface (25) of the main...

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Hauptverfasser: HAGA, TAKEO, NABIKA, YASUHIRO
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
RESISTORS
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NABIKA, YASUHIRO
description A PTC thermistor (21) has a disk-shaped main body (22) with electrodes (26, 27) on its main surface (23, 24) which are facing mutually away from each other such that, during an initial period after a potential difference is applied between these electrodes (26, 27), the side surface (25) of the main body (22) has an asymmetric temperature distribution between the electrodes (26, 27) in the direction normal to its main surfaces (23, 24). The heat emission does not have a peak half-way between the electrodes (26, 27) in the direction of the thickness such that the thermistor has an improved resistance against flash pressure. This may be done by forming the electrodes (26, 27) in different sizes or by providing a non-uniform distribution in specific resistance to the main body (22) such that the heat-emission peak is displaced from the center region between the two main surfaces (23, 24) of the main body (22).
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ELECTRICITY
RESISTORS
title PTC-Thermistor mit verbessertem Wärmestosswiderstand
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