How to convert sqwtooth waveform to pure DC

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HI,
Please help me to convert sawtooth waveform of 2 v to pure DC....
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Hi siddarth.ghaste
What kind of saw tooth wave ? has it any DC component ? or perhaps it is completely simultaneous ?
Can you show me your wave ? and as " jpsganesh " mentioned frequency and load are important too .
Best Wishes
Goldsmith
 

here is the basic circuit for converting sawtooth wave to dc



**broken link removed**
 

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Thanks for your help.....I am converting sine wave frequency to voltage using 2917 IC. But output is not constant(it is sawtooth). I increased capacitor value, ripple vanished but response is very slow.And some times output degrades slowly.Please help me to convert frequency to pure DC voltage.
 

You should use a high impedance load to the capacitor, maybe and op amp voltage follower. Then you can use a small capacitor and not see any ripple.
 

u can go with the method used to convert Halleffect AC current sensor o/p to DC conversion.

Some readymade IC can do this RMS voltage to DC voltage level conversion
 

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