Converters: Sine to Square Wave
Converters -- Main Page
Last Updated on: Tuesday, October 28, 2014 02:16 PM

 

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:

EICO 377 AF sine/square wave generator manual w/schematic -  (circuit added 07/07/07)
EICO 379 AF sine/square wave generator manual w/schematic -  (circuit added 07/07/07)
Line Powered 60hz Clock Generator -  This circuit is connected to the 120vac power line and transfers 60Hz clock pulses to a logic circuit..... [Designed by David A. Johnson]
Paralleling decreases autozero-amplifier noise by a factor of two -  7-Jun-07 Issue of EDN  By simply paralleling four amplifiers of a quad auto-zero amplifier, you can decrease output noise by a factor of two..... [Design Idea by Marián Štofka, Slovak University of Technology, Bratislava, Slovakia]
Self Powered Sine to Square Wave Converter -  Converts sine to square waves without a power-source Useful as a test instrument for audio purposes.....
Self-powered Sine to Square wave Converter -  This circuit is intended to provide good square waves converting a sine wave picked-up from an existing generator.….(Circuit design added 08/08)
Square Wave to Sine Converter -  .....
Time-tag impulses with zero-crossing circuit -  24-Jan-02 Issue of EDN  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..... [Design Idea by Elio Rossi, Itesre-CNR, Bologna, Italy]
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. …. [Designed by David A. Johnson]
Zero Crossing Detector -  Circuit Ideas for Designers Application Notes Advanced Linear Devices, Inc.  (app note added 6/06)