||Bug fix: link to subtopic Inductance was broken
||Wrong link in section Current Transformers fixed; index improved; improved layout of "problems" sections
||More images rearranged for better readability; index improved; cross references to examples added
||Cross references to other ebooks added; "see also" links added; images rearranged for better readability; buttons to link to social networks added
||Index further improved; examples can now be better recognized due to colored background; references to chapters are now implemented as hyperlinks; many OCR errors fixed
||Index improved; many images are now in color; many links added; layout improved; more OCR errors corrected
||Index improved; various OCR errors corrected; Unicode for Greek letters introduced; cross links to figures implemented; images improved
||First implementation of the ebook for testing purposes.