在学习电工基础知识和家电检修技术时,都着重指出:短路会使流过电路的电流急聚增大,造成用电设备和供电电源的严重损坏,应警惕和避免短路故障的发生!而对开路则轻描淡写地说:开路是指电路中某处断开,电流停止流动,电路停止工作。因此,很多检修人员往往特别重视短路性故障,而对开路故障重视不足。笔者检修两台OCL真功放电路却都是由于开路故障造成电路元件大面积损坏,损失二千多元,特此提醒 In the study of electrical basic knowledge and appliance maintenance technology, all stressed: short circuit will flow through the circuit current increases, resulting in serious damage to electrical equipment and power supply, should be wary of and to avoid the occurrence of short-circuit fault! And Open understatement: open circuit is broken somewhere in the circuit, the current stops flowing, the circuit stops working. Therefore, many maintenance personnel often attach great importance to short-circuit faults, while the lack of attention to open-circuit failure. I overhaul the two OCL real power amplifier circuit are due to open circuit failure caused by large-scale damage to the circuit components, loss of more than 2,000 yuan, hereby remind