笔者结合自己平时总结的经验,谈一谈扩音机的调试技巧。扩音机电路板组装完,仔细检查,确保无误后,才能进入调试阶段。对于扩音机的调试,笔者认为主要有三点:其一、中点电压的调整;其二、功放电流的选择和调整;其三、对全机进行统调。许多初学者在调试扩音机时,往往不在意,烧坏许多三极管、电阻、甚至功放管。有的虽然调好了,但放音不久便会 I usually sum up their own experience, talk about megaupload debugging skills. Amplifier circuit board assembly finished, double-check, to ensure correct, to enter the debugging stage. For the megaphone debugging, I believe that there are three main points: First, the mid-point voltage adjustment; Second, the choice and adjustment of the amplifier current; Third, the whole machine to tune. Many beginners often do not mind debugging loudspeakers, burn many transistors, resistors, and even amplifier tube. Although some tune up, but will be released soon