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这里介绍的收音机采用ZN414集成电路制作,运用TRF技术,设计相当简单,性能很好。收音机的电路如附图所示。线圈L_1用于“MW”,L_2用于
The radio introduced here using ZN414 integrated circuit production, the use of TRF technology, the design is quite simple, good performance. The circuit of the radio is shown in the attached figure. Coil L_1 is for “MW” and L_2 is for