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Voltage Dependent switch

vishugupta

Sep 14, 2018
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Sep 14, 2018
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I want know is there any way I can control a switch using the envelope signal of a modulated signal. I have signal which like a decaying Rabi oscillation and I want to control a switch from the sinusoidal envelope function only. Signal screenshot is attached below....
 

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Harald Kapp

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Nov 17, 2011
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Welcome to EP.
It is possible:
  1. Create a signal that represents the envelope using an envelope detector.
  2. Create the on/off signal using a comparator. Adjust the threshold of the comparator to match your requirements.
the internet has heaps of example circuits for both functions.
 

Nanren888

Nov 8, 2015
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By "sinusoidal envelope" you mean the envelope of the sinusoid, right?
So you want the switch to be on while the envelope is high?
 
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