400_Hz

Published:2009/7/15 2:05:00 Author:Jessie | From:SeekIC

One section of Signetics NE558 quad timer is used as nonprecision audio oscillator providing square-wave output of about 400 Hz with values and supply voltage shown. Output frequency is affected by changes in supply voltage.- Signetics Analog Data Manual, Signetics, Sunnyvale, CA, 1977, p 738.



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