发明名称 |
Drive circuit, device, and method for suppressing noise, and use |
摘要 |
A low-frequency PWM-modulated signal and a high-frequency, unmodulated signal for generating a high-frequency PWM-modulated signal is employed directly for driving an output stage of a device for noise suppression. The low-frequency signal and the high-frequency signal is advantageously provided by a microcontroller which already has an AD converter on the input side. The microcontroller furthermore already makes a PWM output signal with a high bit width available which has the high resolution necessary for driving the loudspeaker.
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申请公布号 |
US2005024134(A1) |
申请公布日期 |
2005.02.03 |
申请号 |
US20030630108 |
申请日期 |
2003.07.30 |
申请人 |
SIEMENS AKTEINGESELLSCHAFT;SIEMENS VDO AUTOMOTIVE CORPORATION |
发明人 |
BOLZ STEPHAN;LUGERT GUNTER;MAKAR SIMON |
分类号 |
F02B77/13;F02M35/12;G10K11/16;G10K11/178;H03F1/26;H03F3/217;H03F3/38;H03K7/08;(IPC1-7):H03F3/38 |
主分类号 |
F02B77/13 |
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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