Source google image: http://img.over-blog-kiwi.com/0/99/50/13/20161117/ob_413c02_schema-alim-pwm.JPG
Schema electrique d’un relais 12v modelisme ferroviaire
Source google image: http://img.over-blog-kiwi.com/0/99/50/13/20161117/ob_413c02_schema-alim-pwm.JPG