Check it out to see whats inside your great Galaxy notes' S-Pen!! All the parts are arranged in the picture in the right order as they are actually placed in the S-Pen.
Just to complete the label legends:
1: The Nib (The front end of the nib is what we see pointing out and use for writing/drawing etc. The other end of this nib has a "protrusion" that fits in the hole of the "cap" )
2: The Cap (as mentioned, one end of this cap has a small hole that fits in the nib, while the other end has a "protrusion" that fits in the "rubber ring"). I checked with a magnet and found its made of "iron".
3: The Ring (it is made of rubber and sits between the "cap" and the "coil" part of the electronic circuit.
4a: Coil: Its wounded on a little iron rod and connected with the "electronic circuit".
4b: Electronic circuit: It has a little button (thats where I have marked the arrow and labeled as 4b). This little button is what actually gets pressed when we press the "external button" of S-Pen.
5: The tail/terminal end of the S-Pen: This is what is needs to be pulled out to take out the entire circuitry and the little parts out of the S-Pen!!
6: The External Button: This is whats needs to be TWIZZED out, so that the entire circuitry and the little parts can slide out from the terminal end of the S-Pen!!
7: The main body: You can see this body and make out now how everything is fit-in properly!
I did not find any direct source of electricity in the S-Pen, and thus based on principles of electronics, its apparent that the small little movement (kinetic energy) produced by the "NIB" due to action of writing/drawing etc.must be exciting the electrons (electric energy) in the wounded COIL (magnetic influx), which is used by the circuit for appropriate action!! (Well, this is my own guess and I am welcoming appropriate suggestions.
So that's it!! I opened my S-Pen as it was not functioning properly after it fell down due to which I was required to "press the pen" a lot to write / draw. So I just opened and just "RE-PLACED" respective parts properly and my S-Pen is working fine now!!!
I guess this info can be useful if you have similar troubles!! Nevertheless, this ANATOMY is still helpful to SEE into this beautiful tool of this Superb Device!!!
And yesss... if you found this useful... a click at the THANKS BUTTON shall well be appreciated!!!