Finally, the third part "PSM Cable" was finished. I wanted to understand such explanation by Ion better, therefore I bought an introductory book of mechanical engineering. (I haven't received it yet, though.) I also have been studying with my English textbook. Thanks to my lovely wife for all of them.
Ion:
More excess energy is used for an inefficient cable, so you can make the result completely different by making such discreet part reliable.
