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Thermal loss in dielectric heating

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Thermal loss in dielectric heating

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Dielectric heating is a type of heating used in engineering. Insulated materials are heated and then put over an electric field that changes quickly. It is usually used for making plastics and rubber.

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Dielectric heating, also known as electronic heating, RF (radio frequency) heating, and high-frequencyheating, is the process in which a high-frequency alternating electric field, or radio wave or microwave electromagnetic radiation heats a dielectric material.

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a major advantage of this form of heating is the ability to repadily heat throughout the volume

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The dielectric,usually the insulator between the plates of a capacitor, can be overstressed by the application of too high voltages applied to the capacitor plates. The dielectric breaks down and a current flows between the plates until,either they are discharged, or an equilibrium is reached,below the working voltage of the capacitor. If the dielectric is damaged in this process he capacitor must be replaced. Some dielectric material self heal and can recover from an over voltage.

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