The design is on the square-wave generator and a tone recognizer designed to NE567 tone decoder-based devices, with other appropriate components, in the chamber on the design of circuit connections. This paper introduces the LM567 s internal structure, working principle, performance indicators and selection of parameters and the frequency with which it was designed modulator (square-wave generator) and the audio signal identifier (tone control switch).

fangbafashengqi.zip.doc

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