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how to interpolate the sin signal to many square-wave signals

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djw1981

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I get a sine signal from a sine encoder,but I don't konw how to convrte the sine signals into many square-wave signals.please help me,thanks alot!
 

umesh49

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I get a sine signal from a sine encoder,but I don't konw how to convrte the sine signals into many square-wave signals.please help me,thanks alot!
What do you mean by many square wave signal? You can search for comparator based circuit to convert sin into square wave.

Umesh.
 

siilviu

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Your question is a little ambiguous.
If you reffer to the fact that a square signal is an infinite sum of sine signals, then decomp your square signal in Fourier Series and pick the fundamental and maybe 1st harmonic.
 

djw1981

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Based on comparator,I can get a full square-wave with a full sine wave.It is easy with a chip named MAX998. I want to get more square waves.for example,30,50 etc.Do you have an idea? thanks!
 

djw1981

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what does it mena,erikl?thanks alot!
 

erikl

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what does it mena,erikl?thanks alot!
This was just fun, sorry! Actually I do not understand what you want. Phase-shifted square-waves? Or other frequencies? Could you explain further?
 

djw1981

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for example ,a full sine wave can convert 8 square waves.I want to get more square waves.
 

erikl

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From the 2 square waves generated from the sin & cos sine waves you can generate 4 different square waves by appropriate logic combinations. If you need more, first frequency-multiply the 2 square waves by 2, 4, 8, ..., then generate the required phase shifted square waves again by appropriate logic combinations. Or start from a corresponding higher frequency, then divide by 2, 4, 8, ..., and use appropriate logic combinations.
 
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