[time-nuts] Square to sine wave symmetrical conversion (part 2)

skipp Isaham skipp025 at yahoo.com
Fri Jul 24 16:30:41 EDT 2015


Hello again, 

First off, I want to thank everyone who replied direct and through the group 
regarding my recent 10 MHz square to sine wave conversion info request. 

I obtained a mini-circuits 10.7 MHz low pass filter from Ebay cheap 
enough and I also plan on "rolling my own" based on some of the information 
and links provided in your generous replies. 

Part 2: 

With things in place, I actually looked at the actual square wave output port with 
a decent scope to see it's not even close to being symmetrical.  The waveform 
on-portion (duty cycle) appears (surprising to me) to be much less than 20% 

Now I'm under the assumption that proper rounding or conversion of the non 
symmetrical 10 MHz square to a sine wave will be a bit more involved. 

Before I launch toward part two of this latest saga, I'd really be interested in reading 
suggestions and comments regarding methods to improve/fix the 10 MHz waveform 
symmetry. 

Again, thank you in advance for your replies... 

Regards, 

skipp 
skipp025 at yahoo.com  





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