An electret microphone circuit with strong anti-interference and an electret microphone
CN224697887UActive Publication Date: 2026-08-28HUNAN JIELITAI TECH CO LTD
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Patent Information
- Application Number
- CN202522143653.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-10
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-10
AI Technical Summary
Technical Problem
[0003]基于此，有必要针对现有驻极体麦克风无法满足高端通信设备、智能家居、车载系统等应用场景对语音采集质量的高要求的问题，提供一种强抗干扰的驻极体麦克风电路及驻极体麦克风
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Figure CN224697887U_ABST
Abstract
The utility model relates to a kind of strong anti-interference electret microphone circuit and electret microphone.The strong anti-interference electret microphone circuit includes positive terminal, negative terminal, field effect transistor, electret capacitor, first resistance, second resistance, first inductor, second inductor, first capacitor, second capacitor, third capacitor and fourth capacitor;The one end of first resistance and the one end of first capacitor are respectively connected with positive terminal, the other end of first resistance and the other end of first capacitor are respectively connected with the one end of second capacitor, the one end of second capacitor is respectively connected with the one end of first inductor, the one end of second inductor and the one end of second resistance, the other end of second inductor is connected with the one end of third capacitor, the other end of first inductor is connected with the one end of fourth capacitor, the other end of second resistance is connected with the drain of field effect transistor, the grid of field effect transistor is connected with the one end of electret capacitor.The strong anti-interference electret microphone circuit can effectively improve voice acquisition quality.
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