An Automatic Controller for Radiofrequency Induction‐Heating Units

Theron J. J.

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An Automatic Controller for Radiofrequency Induction‐Heating Units

机译：射频感应加热单元的自动控制器

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A simple, rugged, and adaptable device for regulating the power provided by an industrial rf generator for induction heating is described. An rf voltage picked up by a small coil near the work coil is rectified, opposed by an adjustable dc reference voltage, and the difference‐voltage fed to a commercial chopper‐type dc amplifier and servo motor. The motor drives the power‐controlling element of the generator in such a direction as to reduce the error signal to zero. Regulation of temperature within ±½ degree at 1000°C has been achieved where system is not disturbed in any way.

机译：描述了一种用于调节由工业射频发生器提供的用于感应加热的功率的简单，坚固且适用的设备。由工作线圈附近的一个小线圈拾取的rf电压被整流，与可调节的dc参考电压相对，并且差电压被馈送到商用斩波型dc放大器和伺服电机。电机以将误差信号减小到零的方向驱动发电机的功率控制元件。在不以任何方式干扰系统的情况下，已经实现了在1000°C时将温度调节在±½度以内。

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《Review of Scientific Instruments》 |1953年第4期|共2页
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Theron J. J.;
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South African Council for Scientific and Industrial Research, Pretoria, Union of South Africa;

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An Automatic Controller for Radiofrequency Induction‐Heating Units

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