CN206640805U - 一种两线实时检测扬声器在线数量的电路及检测装置 - Google Patents
一种两线实时检测扬声器在线数量的电路及检测装置 Download PDFInfo
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106998523A (zh) * | 2017-04-24 | 2017-08-01 | 恒业世纪安全技术有限公司 | 一种两线实时检测扬声器在线数量的电路及检测装置 |
CN112770244A (zh) * | 2020-12-22 | 2021-05-07 | 北京城建智控科技有限公司 | 扬声器线路故障的检测方法和装置、音频播放设备 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106998523A (zh) * | 2017-04-24 | 2017-08-01 | 恒业世纪安全技术有限公司 | 一种两线实时检测扬声器在线数量的电路及检测装置 |
CN112770244A (zh) * | 2020-12-22 | 2021-05-07 | 北京城建智控科技有限公司 | 扬声器线路故障的检测方法和装置、音频播放设备 |
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Denomination of utility model: Circuit for real-timely detecting online number of loudspeakers in two-line mode and detection device Effective date of registration: 20200520 Granted publication date: 20171114 Pledgee: Bank of China Limited Qinhuangdao Development Zone sub branch Pledgor: HENGYE CENTURY SECURITY TECHNOLOGY Co.,Ltd. Registration number: Y2020990000495 |
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Date of cancellation: 20210324 Granted publication date: 20171114 Pledgee: Bank of China Limited Qinhuangdao Development Zone sub branch Pledgor: HENGYE CENTURY SECURITY TECHNOLOGY Co.,Ltd. Registration number: Y2020990000495 |
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