收录机自动选曲电路设计

A DESIGN OF THE CIRCUIT OF APLD OF RADIO DUBBING CASSETTE

本文阐述了收录机自动选曲电路的工作原理和工作进程，设计并研制了ＴＣ９１３８Ｐ集成块组成的自动选曲电路，完善了各电子元器件的参数。结果表明，该电路外围元件少、功能强，调试简单方便，是一种实用价值较高的收录机自动选曲电路。

This article introduces the working principle and process of the circuit of APLD of radio dubbing cassette. The circuit of APLD made up of TC 9138 P integrated circuit has been designed and developed with the parameter of each component improved. It shows that this kind of circuit has fewer components around it and it functions better and modulates more easily. It is the circuit of APLD of radio dubbing cassette which is of high practical value.