In this electrical engineering tutorial I go over what a diode is, its functions, general aspects, and a little more detailed aspects.br br Diodes : br Electrical Engineering Tutorial: Rectifier Circuits : br Music:br br "Tranquility Base" Kevin MacLeod (incompetech.com)br Licensed under Creative Commons: By Attribution 3.0 Licensebr br Images:br br br Guam CC BY-SA 3.0, br br br By H1voltage [CC BY-SA 3.0 () or GFDL ()], via Wikimedia Commonsbr br br By inductiveload (Own drawing, done in Inkscape.) [Public domain], via Wikimedia Commonsbr br PN diode : br © copyright 2003-2017 Study.combr br br br br br br br br br By me(Albedo-ukr) (Image:Aluminum.gif) [CC BY-SA 2.5 ()], via Wikimedia Commonsbr br br By James L Marshall [CC BY 3.0 ()], via Wikimedia Commonsbr br br By Jurii () [CC BY 3.0 ()], via Wikimedia Commonsbr br br Materialscientist See page for author [CC BY 3.0 ()], via Wikimedia Commonsbr br br By Dave Dyet (Own work) [Public domain], via Wikimedia Commonsbr br br Santeri Viinamäki [CC BY-SA 4.0 ()], via Wikimedia Commonsbr br electrons and holes : br br Omegatron CC BY-SA 3.0, br br By The original uploader was Morcheeba at English Wikipedia (Transferred from en.wikipedia to Commons.) [CC BY-SA 2.