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Definition of "Polyswitch" |
A trade name for a Polymeric Positive Temperature Coefficient (PPTC) component. A resettable fuse that decreases current flow as it heats up, protecting a device from an over-current condition. As the over-current condition is removed the Polyswitch cools down and returns to a low resistance state allowing normal current flow again; although power will need to be removed before the device 'resets'. A temperature sensitive, non-linear thermistor component that increases its resistance with increased current flow. Also refer to Manufacturers of Resettable fuses. |
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