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HT45R38 Induction Cooker Pot Detection Principle

2013-09-20
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Induction cookers are a type of small household appliance that has developed rapidly in China in recent years. Induction cookers have the following advantages: no open flame, no smoke, energy saving, time saving, easy to use, etc. The development of induction cookers has gone through the stage of pure hardware control in the early stage to the current stage of microcomputer single-chip control. Holtek\'s A/D type MCU is widely used in induction cookers, and its characteristics are low cost, high efficiency, short development cycle, etc. Holtek\'s MCUs for induction cooker control include: HT46R47, HT46R22, HT46R23, HT46R12A, HT46R14A, HT46R32, HT46R34, HT46R322, HT46R342, HT45R38, etc. The commonly used induction cooker pot detection methods are current pot detection and pulse pot detection. In this article, we focus on the pulse pot detection method. The pulse pot detection method has the following advantages: low pot detection power, stable pot detection distance, high resolution, not affected by input voltage, not affected by coil size, and not affected by resonant capacitance.

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