Samsung S3F84B8 - Manual (Page 7)

S3F84B8_ALL-IN-ONE IH COOKER_AN_REV 0.00 1 OVERVIEW OF IH COOKER (IHC)
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OVERVIEW OF IH COOKER (IHC)
In traditional ranges or ovens, cookware is used to transfer heat from the stove elements. However, in the IH
cooker (IHC), the cookware participates in the heat generation. This form of heat generation is known as Induction
Heating, and it improves the overall thermal efficiency of heating.
This document describes an IH cooker (IHC) system implemented with Samsung’s newly developed 8-bit MCU
S3F84B8, which is designed for an all-in-one IHC application with amplifier and comparators.
1.1 INDUCTION COOKING PRINCIPLE
According to Faraday’s Law, changing the magnetic field associated with an alternating current (AC) induces
current in a second conductor placed in that field. IH cookers work largely the same way.
1.1.1 HOW INDUCTION COOKING WORKS
This section describes how induction cooking works.
Steps:
1) The electronic components in the element power a coil, which in turn produces a high-frequency
electromagnetic field.
2) The electromagnetic field enters the ferrous metal (magnetic material) of the cookware and sets up a
circulating electric current (Eddy current), which generates heat.
3) The heat generated in the cookware is transferred internally.
4) The electromagnetic field does not affect the outer body of cookware. As soon as the cookware is removed
from the element or the element turned off, the heat generation stops.
Figure 1-1 How IH Cooker Works