how to extract power out of a 3.5mm audio jack trs/trrs

[venky srinivas]

what is the simple way to get power out of a 3.5mm audio jack of any mobile phone. pls guys answer it, give me a solution...

 

[ss202sl]

http://www.instructables.com/id/How-to-Harvest-Power-from-an-Audio-Jack/

 

[venky srinivas]

but that is too logical nd i do not have a oscilloscope can u tell me any alternate way for it...

 

[lhilel]

hey man...i saw your question about extracting voltage out of the 3.5mm headphone jack.
did u have any luck with that?did you succeed?

Lior