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Earplug interphone circuit structure

A circuit structure and walkie-talkie technology, which is applied in the field of communication products, can solve problems such as slow voice transmission, large walkie-talkie body, and loud noise, and achieve the effects of preventing noise from harming the ears, increasing the intercom function, and fast voice transmission

Pending Publication Date: 2020-02-11
CHANGSHU PYRAMID ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing walkie-talkies have relatively large fuselages, which are inconvenient to carry around, and have defects such as high noise, clear sound quality, slow voice transmission, delay and standby time, so the application range of the existing walkie-talkies is small and not suitable for popularization.

Method used

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  • Earplug interphone circuit structure
  • Earplug interphone circuit structure
  • Earplug interphone circuit structure

Examples

Experimental program
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Effect test

Embodiment

[0041] Such as figure 2As shown, the MUC main control circuit includes an IC control chip U7, a fourteenth capacitor C14, a fifteenth capacitor C15, a forty-fifth capacitor C45 and a second resistor R2, and the fourteenth capacitor C14, the The fifteenth capacitor C15 and the forty-fifth capacitor C46 are respectively connected in parallel with the pins of the IC control chip U7, and the second resistor R2 is connected in series with the pins of the IC control chip U7, wherein the fourteenth The capacitor C14 and the fifteenth capacitor C15 are also connected to ground.

[0042] Such as image 3 As shown, the RF circuit includes BK4818 filter chip U4, high-speed crystal oscillator X1, second capacitor C2, sixth capacitor C6, ninth capacitor C9, thirteenth capacitor C13, sixteenth capacitor C16, nineteenth capacitor C19, twenty-first capacitor C21, twenty-second capacitor C22, twenty-fifth capacitor C25, twenty-sixth capacitor C26, twenty-seventh capacitor C27, thirty-fifth ...

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PUM

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Abstract

The invention discloses an earplug interphone circuit structure. The earplug interphone circuit structure comprises an MUC main control circuit, an RF radio frequency circuit, a transmitting amplifying circuit, a receiving amplifying circuit, a power switch circuit, an LDO voltage stabilizing circuit, a USB charging circuit, a microphone bias circuit, a voice broadcasting circuit and an audio playing circuit. In this way, the earplug interphone circuit structure can adds the talkback functionality, can prevent noise from hurting ears, can clearly hear talkback content, can perform one-to-one,one-to-many and many-to-many calls, is clear in tone quality, fast in voice transmission, free of delay and ultra-long in standby time, can be widely applied to workshop field management, lover interaction, KTV, restaurants, beauty salons, restaurants, barbershops and other places, and is wide in application range.

Description

technical field [0001] The invention relates to the field of communication products, in particular to an earplug intercom circuit structure. Background technique [0002] Before 1985. Walkie-talkie communication is the main way of private wireless communication in my country, with the development of public mobile communication. The walkie-talkie market has gradually become an important professional communication market. Now, walkie-talkies are widely used in various fields of the national economy, and have become important wireless communication equipment for national security, public security police, traffic management, petrochemical, construction, machinery manufacturing, property security and other departments. [0003] However, the existing walkie-talkies have relatively large fuselages, which are inconvenient to carry around, and have defects such as high noise, clear sound quality, slow voice transmission, delay and standby time, so the application range of the exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/3827H04B1/40A61F11/08
CPCH04B1/385H04B1/40A61F11/08H04B2001/3866H04B2001/3872
Inventor 陈志祥
Owner CHANGSHU PYRAMID ELECTRONICS TECH CO LTD
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