Lighting choke

Lighting chokes, for fluorescent lamps

Throttle

A choke or electric choke is an inductive element (coil), a type of copper wire, with windings wound on a magnetic core. In addition to alternating current circuits, the choke can also be used in direct current circuits, where the direct current is supplied at intervals, whereby energy accumulates in the coil, which is given to other components.

Application of chokes

• for fluorescent lamps;
• for sodium lamps;
• for metal-halide lamps;

A choke is primarily used as a passive inductor that does not pass higher frequency alternating current (AC) into the circuit while passing much lower frequency and direct current signals. Chokes are commonly used as inductive components in electronic filters. They are most widely distributed in lighting and are used together with starters for fluorescent, sodium and metal-halide lamps.