Patent ID: 11882641
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 18:
19. The induction heating cooktop according to claim 1, wherein the working coil is configured to:
based on a magnetic object being disposed on the upper surface of the cover plate, apply current through a first equivalent circuit comprising a resistor component of the magnetic object, an inductor component of the magnetic object, a resistor component of the thin layer, and an inductor component of the thin layer; and
based on a nonmagnetic object being disposed on the upper surface of the cover plate, apply current through a second equivalent circuit comprising the resistor component of the thin layer and the inductor component of the thin layer, and
wherein the resistor component of the thin layer and the inductor component of the thin layer define an electrical impedance in the thin layer.