发明名称 |
Method and circuit for testing an audio high-frequency loudspeaker being part of a loudspeaker system |
摘要 |
The present invention relates to a method and a circuit for testing a tweeter (4B) in a bridge-type class D switching amplifier, said tweeter (4B) being part of a loudspeaker system (1A), wherein the method includes the steps of: applying a high-frequency voltage signal (VinAC) to one terminal (4D) of said tweeter (4B), said high-frequency voltage signal (VinAC) being generated by first electronic means (8); applying a constant voltage signal (VinDC) to the other terminal (4E) of said tweeter (4B), said constant voltage signal (VinDC) being generated by second electronic means (9); measuring a current I load that flows through said tweeter (4B) into said second electronic means (9); determining a connect/disconnect state of said tweeter (4B) from the value of said current (I load ). |
申请公布号 |
EP2048896(A1) |
申请公布日期 |
2009.04.15 |
申请号 |
EP20070425643 |
申请日期 |
2007.10.12 |
申请人 |
STMICROELECTRONICS S.R.L. |
发明人 |
BOTTI, EDOARDO;GOGNANO, GIOVANNI;ADDUCI, PIETRO MARIO |
分类号 |
H04R29/00;H04R5/04 |
主分类号 |
H04R29/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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