A choke is an inductor which is used to block AC voltages from a circuit. Thus, it "chokes off" the AC currents. Chokes usually have fixed values.
Chokes can be classified into
- Audio Frequency chokes which function at the power and audio frequency and
- Radio Frequency chokes which function at high frequencies.
Audio frequency chokes have toroidal cores made of ferrite material. Radio frequency chokes have iron powder or ferrite materials.
