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Definition of "Positive Temperature Coefficient" |
[PTC] The characteristic of a conductor in which the resistance increases as temperature increases. / The temperature coefficient is the relative change of a physical property when the temperature is changed by 1 Kelvin. / The Fullerphone was a portable DC line Morse telegraph.Its main feature was that transmissions were immune from overhearing, which made the system very suitable for forward use in the trench warfare of the time.A filter combination of chokes and condensers maintains the line current in transmission and prevents seepage from other line communications systems. |
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