OTL电路甩掉了笨重的变压器,有利于小型化.同时,提高了功率传输效率,克服了由变压器耦合所带来的频率失真和相位失真.这种电路具有较宽的频率响应范围和高传真的优点.并且,由于晶体管阶格的急剧下降,也降低了成本.因此,目前除了电子仪器中有采用这种OTL放大器外,绝大多数的收音机、扩大机和电视机伴音输出电路都采用这种功率放大器电路.OTL电路无疑有许多优点.但是,由于电路中所用品体管数目较多,又往往在电路中采用多级直流负反馈形式,工作点互相牵联,工作原理较为复杂,所以调整起来也比较困难.如果调得不好,反而容易产生失真.有时,遇到故障不易进行确切的判断,甚至感到无从下手.对于OTL电路工作原理不大熟悉的人,甚至不得不将电路中的各个晶体管或其它元件依 OTL circuit to get rid of bulky transformers, is conducive to miniaturization.At the same time, improve the power transmission efficiency, to overcome the transformer coupling caused by the frequency distortion and phase distortion.This circuit has a wide frequency response range and high-fax And, because of the steep drop in the transistor scale, also reduces the cost.Therefore, in addition to the use of electronic devices such OTL amplifier, the vast majority of radios, amplifiers and television sound output circuits are used The power amplifier circuit .OTL circuit undoubtedly has many advantages.But because the circuit used in the body of a large number of tubes, and often in the circuit using multi-level DC negative feedback form, the work points are associated with each other, the working principle is more complex, so It is more difficult to adjust.If the transfer is not good, but prone to distortion.Of course, the failure is not easy to make precise judgments, or even feel unable to start.For OTL circuit is not familiar with the principle of people, and even had to circuit Depending on the transistor or other components