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Converters: Sine to Square Wave
Last Updated on:
Wednesday, April 23, 2008 09:41 PM

Converters -- Main Page

Circuits Designed by Dave Johnson, P.E. :
  • LINE POWERED 60Hz CLOCK GENERATOR
    This circuit is connected to the 120vac power line and transfers 60Hz clock pulses to a logic circuit. The optoisolator used provides 5000 volts of isolation between the power line and the logic side of the circuit.
  • WIDE BAND ZERO CROSS DETECTOR
    This circuit was designed to convert a low amplitude 40KHz signal into a clean square wave signal.  It will work with inputs as small as 5mv peak-to-peak or as large as 3 volts peak to peak.  The input frequency can range from a few kilohertz to about 150KHz.

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Current Feedback Amps Square up Fast Signals:  06/23/94 EDN-Design Ideas / (Electronic Circuit diagram added 03/03) Using current-feedback amplifiers to convert signals from sine waves to square waves for DSP confers advantages over the more common comparator approaches. Current-feedback amplifiers have wide bandwidths and relatively small and constant propagation delays. These small, constant delays help meet the setup-and-hold requirements of digital logic. Typically, current-feedback amplifiers have delays from 1.1 to 5 nsec....
Self Powered Sine to Square Wave Converter:  Converts sine to square waves without a power-source Useful as a test instrument for audio purposes (Circuit added 9/04)
Square Wave to Sine Circuit:  (Electronic circuit added 7/03)
Square Wave to Sine Converter:  (circuit added 7/02)
Time tag impulses with zero crossing circuit:  01/24/2002  EDN - Design Ideas / (added 11/03)    A "constant-fraction discriminator" usually performs the time-tagging of impulsive events, which have a peaking time of the signal amplitude. The implementation of this technique requires a delay in the input signal of approximately the same amount as the signal's rise time. You can attain this delay by using a coaxial cable of an appropriate length.
Time-tag impulses with zero-crossing circuit:  01/24/02 EDN Design Ideas (added 1/05)  A "constant-fraction discriminator" usually performs the time-tagging of impulsive events, which have a peaking time of the signal amplitude. The implementation of this technique requires a delay in the input signal of approximately the same amount as the signal's rise time. You can attain this delay by using a coaxial cable of an appropriate length. ...
Zero Crossing Detector: Circuit Ideas for Designers - Application Notes - Advanced Linear Devices, Inc.  (Circuit / schematic design added 6/06)

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