EBow

The EBow, short for electronic bow or energy bow,[1] is an electronic device used for playing string instruments, most often the electric guitar. It is manufactured by Heet Sound Products, of Los Angeles, California. It was invented by Greg Heet in 1969, introduced in 1976 and patented in 1978.[2]

The EBow uses a pickup in an inductive string driver feedback circuit, including a sensor coil, driver coil and amplifier, to induce forced string vibrations. The EBow drives one string at a time, producing a sound reminiscent of using a bow on the strings.[3]