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)
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)
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)
