Learn what relays are and what they do. Explore how relays are used in every day electronic devices. Try this circuit!: goo.gl/I2T4Ab The true enabler between digital controllers and high powered devices. Twitter: https://twitter.com/Simp_electronic Facebook: https://www.facebook.com/SimplyElectronicsYouTube/ Subscribe for more Simply Electronics Episodes! If you would like to support me to keep Simply Electronics going, you can become a Patron at https://www.patreon.com/SimplyElectro... This video was produced with the help of the excellent app called everycircuit, at evercircuit.com