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Converters:
Sine to Square Wave Converters -- Main
Page Last Updated on:
Friday, March 12, 2010 12:07 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. The optoisolator
used provides 5000 volts of isolation between the power line and the logic side of
the circuit. ….(designed by David A. Johnson)
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. Its main feature consists in the fact that no power-source is needed:
thus it can be simply connected between a sine wave generator and the device under
test.….(circuit design added 08/08)
Time Tag Impulses with Zero Crossing Circuit - 01/24/02 EDN-Design Ideas:
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.... / (schematic / circuit added 11/03)
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)
