| 摘要 |
An induction heating apparatus and related temperature control circuitry and method of controlled heating of a workpiece at two temperature levels. The apparatus and method utilizes a temperature sensing device, adjustable reference temperature circuitry utilizing a voltage dividing circuit triggered by a timing circuit to heat the workpiece to a first predetermined temperature, dwell at the predetermined temperature for an amount of time governed by the timing device and continue heating the workpiece to a second predetermined desired temperature. The method and circuitry being particularly useful in heating a laminar structure where a ferromagnetic material is coated with a surface of nonconducting, nonferromagnetic material, such as paint. |
