UTC DO-T27 Reactor, Inductor, Coil, Choke Bobbin

1.25HY @ 2ma / .5HY @ 11ma 100 Ohms An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a coil. When the current flowing through the coil changes, the time-varying magnetic field induces an electromotive force (emf) (voltage) in the conductor.