component ID please?

[the_doc735]

component ID please?

...does any know if these are RFI/EMI suppressors? (the 2 green PCB's)

 

many thanks!

 

[PeterSt]

They are (X and Y capacitors, varistor and inductor). Many configurations are possible.

[the_doc735]

1 hour ago, PeterSt said:

They are (X and Y capacitors, varistor and inductor). Many configurations are possible.

great! thanks!

found this:

https://www.allaboutcircuits.com/technical-articles/safety-capacitor-class-x-and-class-y-capacitors/

 

cheers!   ....much appreciated!

[PeterSt]

14 minutes ago, the_doc735 said:

found this:

https://www.allaboutcircuits.com/technical-articles/safety-capacitor-class-x-and-class-y-capacitors/

 

Yes, but the first line of the text in there:

 

Class-X and Class-Y capacitors help to minimize the generation of EMI/RFI and the negative effects associated with received EMI/RFI.

 

is not really telling you the story. X and Y capacitors are capacitors which safely can be applied in mains applications (230V/115V) which your shown device is about). The text in that link refers to that too, but the noise filtering aspect is just about "capacitors" (and resistors and coils). However, when such filter is applied in the mains lines, the capacitors are not allowed to "break" and shortcut in-line (X), or from line to ground (Y). In other words, capacitors can blow and next can shortcut because of that. X and Y capacitors can blow too but do not shortcut (Y) or can withstand high current when shortcut (X). In the end the safety is about the whole setup and this is how also the varistor comes into play (varies resistance per current).

When all is safely setup, the filter is allowed to do its work.