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问:我们单位的所有音响设备,在充电机充电时产生严重的交流声,使人很不舒服。特询问在充电机工作的情况下,采取什么措施,才能消除此交流声。答:此交流声是因充电机在工作时产生的高频干扰信号污染了电源,通过电源流串到各音响设备而产生的。解决问题的方法只有从电源入手,主要有两点:①将音响设备的电源增加高频滤波电路;②改交流供电为直流电瓶供电,以避开电源的干扰。(汪胜发)
Q: All the audio equipment in our unit is very uncomfortable when the charger is charging, causing serious hum. Special inquiry asked in the charger work, what measures to be taken to eliminate this exchange of voices. A: This hum is caused by the high-frequency interference signals generated by the charger during operation, which pollute the power supply and flow through the power supply to each audio equipment. The only way to solve the problem from the power supply, there are two main points: ① increase the power of audio equipment, high-frequency filter circuit; ② change the AC power supply for the DC battery to avoid interference from the power supply. (Wang Sheng made)