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zhi gao 212b gong fang jiao liu sheng de ying ji pai chu
Author(s): 
Pages: 24
Year: Issue:  6
Journal: Family Electronics

Keyword:  交流声放音功放电位器噪音污染开机音量应急供电电源大容量电容;
Abstract: <正> 笔者最近购买了一台至高212B型功放,开始试听时声音完美,高中低音均表现不错,无噪音污染。但放音两天后出现了交流声,时大时小,且不随音量电位器变化。有时开机一段时间后出现,有时则开机便有。开机检查,因其交流声不受音量电位器控制,所以应重点检查功放后级。此类功放
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