Mini transformer / parts in LED lamp

[Freedom666]

Wonder what type of mini transformers these are and if they could be used for anything in Hifi alternatively.

Got it out of led lamp.

Nice 400v electrolytic to be found in and can be reused. And the other parts?

Who knows what can be done with it?

 

[Mooly]

It is a high frequency transformer for the switching type supply that the PCB is.

It will run at many tens or even hundreds of kHz.

 

[Elvee]

It is probably an inductor, maybe with a tap, in the 1~10mH range.
As it can withstand some DC bias, it could be used in a CLC supply, for currents <100mA

 

[Mooly]

I think @Elvee is correct. I can see the number on the chip (9938) which seems to be a buck convertor for LED's

https://pdf1.alldatasheet.com/datasheet-pdf/view/1140993/BPS/BP9938X.html

 

[Freedom666]

These lamps are abundantly to be found

Here some more fotos

 

[Freedom666]

 

[lcsaszar]

These components are found in wall-wart power adaptors, as well. The cause of most frequent failure is the leaking big capacitor. I just replaced one.