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Converters:
Sine to Square Wave Converters -- Main
Page Last Updated on:
Monday, October 03, 2011 06:07 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:
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 - This circuit is
intended to provide good square waves converting a sine wave picked-up
from an existing generator.….(Circuit design added 08/08)
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)
