Patent ID: 11955816
Assignee: GREEN SOLUTION TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 3:
4. The metal object detecting device according to claim 2, wherein the oscillation detector circuit further includes a first resistor and a second resistor, a first terminal of the first resistor is connected to a second terminal of the second transistor, a first terminal of the second resistor is connected to a second terminal of the first resistor, a second terminal of the second resistor is grounded, the first digital signal processor is connected to a node between the first resistor and the second resistor, the first digital signal processor controls a frequency and an amount of power of the power signal transmitted by the transmitter coil and detects turning on or off of the relay to determine whether or not the metal object is close to the wireless charging device, according to a current flowing through the node or a voltage of the node.