CN203942639U - 一种用于医用音视频带消音状态的耳机电路 - Google Patents

一种用于医用音视频带消音状态的耳机电路 Download PDF

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Publication number
CN203942639U
CN203942639U CN201420364848.8U CN201420364848U CN203942639U CN 203942639 U CN203942639 U CN 203942639U CN 201420364848 U CN201420364848 U CN 201420364848U CN 203942639 U CN203942639 U CN 203942639U
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China
Prior art keywords
noise reduction
audio signal
field
effect transistor
reduction state
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Expired - Fee Related
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CN201420364848.8U
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English (en)
Inventor
刘金虎
盛有才
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Nanjing Perlove Medical Equipment Co Ltd
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Nanjing Perlove Radial Video Equipment Co Ltd
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Abstract

一种用于医用音视频带消音状态的耳机电路，其结构由六部分组成：音频信号L(1)、音频信号R(2)、消音控制(3)、场效应晶体管Ql(4)、场效应晶体管Q2(5)、耳机插口输出信号(6)，其特征在于：音频信号L(1)、R(2)经消音控制(3)送到耳机接口，场效应晶体管Ql(4)、Q2(5)的漏极分别接到音频信号L(1)、音频信号R(2)的输入线上，当有消音控制电压时，场效应晶体管Ql(4)、场效应晶体管Q2(5)导通，将音频信号L(1)、音频信号R(2)短路到地，耳机插口输出信号(6)无信号，从而实现耳机处于消音状态。其优点是：性能稳定，价格低廉，能满足各种条件下对带消音状态耳机电路的要求。

Description

一种用于医用音视频带消音状态的耳机电路
技术领域
本设计方案是属于医用电路音视频耳机领域。
背景技术
在医疗X光射线系统中物联网常常用到音视频带消音状态的耳机电路，由于现有的集成度高，使用的IC芯片普遍存在价格高，复杂且不宜维修等缺点而上述的采用场效应晶体管作为消音管的耳机电路采用分离元器件，性能优良，价格便宜，便与维修等特点，在功能上也不逊色其他带消音状态的耳机电路。
发明内容
本设计方案在很多场合均能使用，具有性能稳定，价格低廉，维修方便等优点，本设计方案为在音视频耳机领域提供了一种新的思路。本方案由六大部分组成：音频信号L(1)、音频信号R(2)、消音控制(3)、场效应晶体管Ql(4)、场效应晶体管Q2(5)、耳机插口输出信号(6)。
本技术方案是将音频信号L(1)、音频信号R(2)、消音控制(3)、场效应晶体管Ql(4)、场效应晶体管Q2(5)、耳机插口输出信号(6)整合为一体。
本技术方案的优点是具有性能稳定，价格低廉，维修方便，能满足各种条件下对音视频带消音状态耳机电路的高要求。
附图说明
图1：医用音视频带消音状态的耳机电路原理图。
具体实施方式
来自数字信号处理电路的音频信号L(1)、R(2)经消音控制(3)送到耳机接口，场效应晶体管Ql(4)、Q2(5)的漏极分别接到音频信号L(1)、音频信号R(2)的输入线上，当控制电路送来消音控制电压时，场效应晶体管Ql(4)、场效应晶体管Q2(5)导通，将音频信号L(1)、音频信号R(2)短路到地，耳机插口输出信号(6)无信号，从而实现耳机处于消音状态的功能。

Claims (1)

1.一种用于医用音视频带消音状态的耳机电路，其特征在于来自数字信号处理电路的音频信号L(1)、R(2)经消音控制(3)送到耳机接口，场效应晶体管Ql(4)、Q2(5)的漏极分别接到音频信号L(1)、音频信号R(2)的输入线上，当控制电路送来消音控制电压时，场效应晶体管Ql(4)、场效应晶体管Q2(5)导通，将音频信号L(1)、音频信号R(2)短路到地，耳机插口输出信号(6)无信号，从而实现耳机处于消音状态，本方案由六大部分组成：音频信号L(1)、音频信号R(2)、消音控制(3)、场效应晶体管Ql(4)、场效应晶体管Q2(5)、耳机插口输出信号(6)。
CN201420364848.8U 2014-07-03 2014-07-03 一种用于医用音视频带消音状态的耳机电路 Expired - Fee Related CN203942639U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420364848.8U CN203942639U (zh) 2014-07-03 2014-07-03 一种用于医用音视频带消音状态的耳机电路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420364848.8U CN203942639U (zh) 2014-07-03 2014-07-03 一种用于医用音视频带消音状态的耳机电路

Publications (1)

Publication Number Publication Date
CN203942639U true CN203942639U (zh) 2014-11-12

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CN201420364848.8U Expired - Fee Related CN203942639U (zh) 2014-07-03 2014-07-03 一种用于医用音视频带消音状态的耳机电路

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CN (1) CN203942639U (zh)

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP01 Change in the name or title of a patent holder

Address after: 211112 Jiangning, Jiangsu Province, open source road, No. 168, No.

Patentee after: NANJING PERLOVE MEDICAL EQUIPMENT CO., LTD.

Address before: 211112 Jiangning, Jiangsu Province, open source road, No. 168, No.

Patentee before: Nanjing Perlove Radial-video Equipment Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141112

Termination date: 20180703