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| Split Return Coils: Split-Return Coils are used when a narrow band of heat is required and heating must be accomplished from one surface only, the split-return inductor offers distinct advantages. With this design, the center runner of the work coil carries twice the current of each of the return legs. The pattern on the workpiece, being a mirror image of the coil, produces four times as much heat under the center leg as in each of the return loops. With proper balancing, the high-heat path can then be extremely narrow, while the heat produced in each of the return legs is insufficient to affect the remainder of the part. |
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