Hello,
In the attached AC filter we can see that L1 is a common mode choke.
We are trying to reduce the component count of this filter. Do you agree that we can get away with omitting the Cy1 capacitors , but that we must keep the Cy2 capacitors?
In fact, why would the Cy1 capacitors be needed at all?.....i mean, any noise that has escaped out out to earth, would always want to take the least resistance path, and that would definitely be through the Cy2 capacitors….because then the noise would be going back through the common mode choke and thus would not see the high common mode impedance of the common mode choke.
So why are the Cy1 capacitors included? If anything the Cy1 capacitors should just be used as extra capacitors at the same position as the Cy2 capacitors. Do you agree?
In the attached AC filter we can see that L1 is a common mode choke.
We are trying to reduce the component count of this filter. Do you agree that we can get away with omitting the Cy1 capacitors , but that we must keep the Cy2 capacitors?
In fact, why would the Cy1 capacitors be needed at all?.....i mean, any noise that has escaped out out to earth, would always want to take the least resistance path, and that would definitely be through the Cy2 capacitors….because then the noise would be going back through the common mode choke and thus would not see the high common mode impedance of the common mode choke.
So why are the Cy1 capacitors included? If anything the Cy1 capacitors should just be used as extra capacitors at the same position as the Cy2 capacitors. Do you agree?