R31 should be wire link

Meaning R31 is not required ? I thought earlier a PE was required ? well i did try connecting the PE directly to the common GND without the 1M resistor R31. Did not work either.

 

Hi

I thought the comparators were Opamps? Seems they changed to comparators.
Anyway...Here is a sim with the comparators change to LM358's. I've also used a modulator device to ramp the input sine wave as MrAl suggested.

Measurements:
vlow: RMS(v(vin))=0.818086 FROM 0.216605 TO 1.5
vhigh: RMS(v(vin))=2.86648e-006 FROM 1.40269 TO 1.5

eT

 

Well the simulation had worked all good but the PCB did not. Anything that i could help to troubleshoot ?

 

I can't see any connection between the comparator package pin 4 and the power supply ground "GND"

Drawing schematics with rectangles with pin names and numbers makes if much more difficult to follow than if proper comparator symbols were used.

 

Well the simulation had worked all good but the PCB did not. Anything that i could help to troubleshoot ?

LM393's are comparators. Why did you change the opamps (configured as comparators) to comparators?

eT

 

Drawing schematics with rectangles with pin names and numbers makes if much more difficult to follow than if proper comparator symbols were used.

Agree 100%. EagleCAD defaults to this, and it's one of the countless reasons I dislike it (Of course you can make your own packages, but that process is no fun either.)

 

I can't see any connection between the comparator package pin 4 and the power supply ground "GND"

Drawing schematics with rectangles with pin names and numbers makes if much more difficult to follow than if proper comparator symbols were used.

That was an earlier schematic which i've changed now but am unable to attach the file here. I get an error whenever i try to.

 

but am unable to attach the file here. I get an error whenever i try to.

How are you trying to attach the file?
What is the file format?
Are you using the Upload a File button at the bottom of the post?

 

yes that is how i had been doing it till today.

 

Seems to be something wrong with Firefox.

 

i get a 2.07v at the output and the CS led lights up but when connecting it to a pin on the Arduino the voltage drops to zero.

 

Pin 2 (-) - .025
Pin 3 (+) - .002
measure with reference to GND

 

Pin 5 (-) = 0.321
Pin 6 (+) = 0.02