Patent ID: 11968503
Assignee: SHANGHAI AWINIC TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 5:
6. The current detection circuit according to claim 2, wherein the second current detection sub-module comprises a third switch, a fourth switch, a second comparator, a fifth power transistor, a sixth power transistor, a seventh power transistor and an eighth power transistor, wherein
a first terminal of the third switch is connected to the second speaker output terminal, and a second terminal of the third switch is connected to a non-inverting input terminal of the second comparator;
a first terminal of the fourth switch is grounded, and a second terminal of the fourth switch is connected to the non-inverting input terminal of the second comparator;
an inverting input terminal of the second comparator is connected to a joint at which the fifth power transistor is connected to the eighth power transistor;
an output terminal of the second comparator is connected to a gate of the fifth power transistor;
a source of the fifth power transistor is connected to a first terminal of the eighth power transistor, and a drain of the fifth power transistor is connected to a drain of the sixth power transistor;
a second terminal of the eighth power transistor is connected to a voltage input terminal, and a third terminal of the eighth power transistor is grounded;
the voltage input terminal is connected to a third joint at which a source of the sixth power transistor is connected to a source of the seventh power transistor; and
the drain of the sixth power transistor is connected to a fourth joint at which a gate of the sixth power transistor is connected to a gate of the seventh power transistor.