Principles of Dielectric Heating

This article attempts to give a clear, simple story of radio-frequency generators and the dielectric heating process, with the hope that it will make the users’ problems easier. The power output from a radio-frequency generator is always less than the power output from the 60-cycle line, so it is not a means of getting something for nothing. Its efficiency is in the order of 50 percent. Radio-frequency equipment is generally justified by increased production, simplification of process, or improved product quality. The essence of dielectric heating is speed, and an application can be justified only by making an economic analysis and comparing the cost with alternate methods of heating. Examples of radio-frequency edge gluing are given.

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