difference between duty cycle & mark-space ratio?

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peeryus

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Hi
can anyone give me clear definitions of duty cycle & mark-space ratio?are they the same thing?

thanks
 
They are NOT the same!!!

Mark Space Ratio = 1 means that Mark = Space (i.e. 50% duty cycle).
Duty Cycle = 1 means that the output is on full time (Mark=100%, Space=0%, i.e. 100% duty cycle).
 
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ok i think i get it.so duty cycle = Ton/Period right? and mark space ratio = Ton/Toff right?
 
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Or Duty Cycle = Ton/(Ton+Toff).
 
Yes very true.So is my formula for mark space ratio correct?

Thanks again

Yes. ###############################################
 
I think what audioguru meant, is they're two different ways of measuring the same thing.
 
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