Zero_crossing_detector_for_magnetic_transducer

Published:2009/7/24 4:14:00 Author:Jessie | From:SeekIC

Fig, 15-2 This circuit detects zero crossing in the output of a magnetic transducer within a fraction of 1 mV. The resistive divider, R1 and R2, biases the inputs 0.5 V above ground, within the common-mode range of the LM111. The output will drive DTL or TTL directly. Because the output must drive any capacitive loading for positive-going output signals, the value of R5 determines circuit speed (a lower value increases speed). An optional offset-balancing circuit using R3 and R4 is included in the schematic. National Semiconductor Linear Applications Handbook 1991, p 130.



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