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CASSETTE_DATA_PLAYBACK

2016-10-19 07:05  
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CASSETTE_DATA_PLAYBACK
Converts low-level digital signals from cassette recorder into CMOS-compatible 5-V square waves. Both in-puts of 3130 opamp are biased to +2 V for use as open-loop comparator. RC input filter minimizes hum and bias interference.-D. Lancaster, CMOS Cookbook, Howard W. Sams, Indianapolis, IN, 1977, p 345.