NSN 5945-00-879-2173

An item which develops mechanical energy as a result of momentary or intermittent impulses in a coil (1) or electromagnet and which is used to operate such items as a ratchet or signaling device. For items having a core axially set within a coil and in which the coil and core move with respect to each other, see solenoid, electrical. See also motor (as modified) and annunciator.