Tachometer

Published:2009/7/17 3:39:00 Author:Jessie | From:SeekIC

This circuit uses two sections of an XR-13600 (Fig. 11-1b) to form a tachometer or frequency-to-voltage converter. The input is triggered by a positive-going waveform. The maximum FIN is limited by the time required to charge Ct from VL to VH with a current of IB, where VL and VH represent the maximum-low and maximum-high output voltage swing of the XR-13600. D1 provides a discharge path for Ct when A1 switches low. EXAR Corporation Databook 1990 p 5-256



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