发明名称 |
SOUND OUTPUT CONTROL CIRCUIT |
摘要 |
PROBLEM TO BE SOLVED: To control a switching regulator placed in a power line to keep a maximum sound output constant even when a sound power supply voltage changes. SOLUTION: When the level of a sound signal 2 becomes higher, a Zener diode 20 is added to clip the output of a high level selector 11, thereby controlling the maximum sound output.
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申请公布号 |
JP2002353743(A) |
申请公布日期 |
2002.12.06 |
申请号 |
JP20010162231 |
申请日期 |
2001.05.30 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
OKAJIMA MASAYUKI |
分类号 |
H04N5/60;H02M3/155;H03F1/30;H03F3/68;(IPC1-7):H03F1/30 |
主分类号 |
H04N5/60 |
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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