Placement of Y Capacitors

[rhnrgn]

I want to ask 3 questions.

1_Is there any king of Y capacitors for DC lines? I only can find AC line Y capacitors which as rates for 250V etc.

2_Can i use Y caps after AC to DC converter at 24V voltage stage? Because i can only intervente after AC to DC converter stage.

3_Should i put Y caps on both of 24V line and 0V line. I am asking this question because i think the noise is coming from only 0V line and i am thinking about putting Y cap only between 0V and earth ground.

Thank You!

 

[chuckey]

"X" and "Y" capacitors are capacitors that are specially designed and manufactured for putting across the 230V AC mains. They are designed to fail in a non lethal way.
Now if you want to get rid of noise on a 24V DC line , you can use any capacitor rated for greater then 24V.
Frank