Title:
SENSOR MICROPHONE OUTPUT PROTECTION CIRCUIT AND SENSOR MICROPHONE
Document Type and Number:
WIPO Patent Application WO/2023/160202
Kind Code:
A1
Abstract:
Provided in the present application are a sensor microphone output protection circuit and a sensor microphone. The sensor microphone comprises an amplification output circuit, a power supply end and an audio output end, wherein the amplification output circuit is respectively electrically connected to the power supply end and the audio output end. The sensor microphone output protection circuit comprises a voltage measurement module, a low-level trigger module and a switch module, wherein a measurement end of the voltage measurement module is connected to the power supply end, an output end of the voltage measurement module is electrically connected to a controlled end of the low-level trigger module, and a controlled end of the switch module is electrically connected to the low-level trigger module.
Inventors:
CHEN ZHANGYI (CN)
Application Number:
PCT/CN2022/141623
Publication Date:
August 31, 2023
Filing Date:
December 23, 2022
Export Citation:
Assignee:
GOERTEK MICROELECTRONICS INC (CN)
International Classes:
H04R3/00; H02H3/24
Foreign References:
| CN114567837A | 2022-05-31 | |||
| US6904156B1 | 2005-06-07 | |||
| JP2009253343A | 2009-10-29 | |||
| CN108076417A | 2018-05-25 |
Attorney, Agent or Firm:
CENFO INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF: