Multi-function numerical control waveform generator circuit

Published:2011/6/25 5:52:00 Author:TaoXi | Keyword: Multi-function, numerical control, waveform generator | From:SeekIC

The multi-function numerical control waveform generator circuit is as shown in the figure, it is designed as one kind of digital waveform generator application circuit that can produce the triangular wave and the sawtooth waveform. In the figure, the 8-bit reversible counter is composed of two 4-bit reversible counter SN74L191, the increasing or decreasing count output is used as the input of D/A converter, the output voltage Vo is the gradually increasing or decreasing voltage, it changes linearly. When the manual switch S3 is in position 2 , the trigger's output Q=1, the counter counts diminishly, and it outputs the negative sawtooth wave; when the manual switch S3 is in position 3 , Q=0, it outputs the positive sawtooth wave.



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