Tesla makes two kinds of electric motors. Generators provide nearly all of the power for electric power grids. LittleDog has four legs, each powered by three electric motors. These get a significant amount of their power from electric motors. It is a type of electric power converter. All electronic circuits produce heat generated by the movement of electric current. There are many different types of coils used in electric and electronic equipment. Hybrids of acoustic and electric guitars are also common. A variety of electric propulsion systems provide examples. Electromagnetic radiation consists of coupled electric and magnetic fields. Fingerpicking is less common on electric guitar. This was due in part to Thomas Edison himself leaving the electric power business. They were replaced by electric trolley cars. They began performing together with Haefeli adding electric guitars. They haul their lines with electric or hydraulic reels.