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kumban
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Sine wave triggered pulse generator or monstable multivibrator

I generate a sine wave with signal generator VI. How I can generate a pulse of adjustable width which goes high when the sine wave makes zero csosring ?

 

Let me explain: I need a pulse train generator, which is to be triggered by a sine wave. The pulse generator output should go high when the sine wave crosses zero. The pulse width (ON time) should be adjustable. It is like a monostable multivibrator for which the trigger is a sine wave.