| 摘要 |
The component has a laminated metal core 1.1 and a coil 1.2 and heating coil 2.1 is looped through the core. The heating coil is connected to the output of a converter 2.2 that is an ac transformer and can vary the frequency, amplitude and shape of the waveform, eg sinusoidal, rectangular, triangular or saw tooth. In addition the coil can be coupled to a dc supply 3.
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