An AC choke is an inductor designed to impede alternating current (AC) while allowing direct current (DC) to pass, commonly used for filtering, noise reduction, and protecting electrical equipment.
A choke, also known as a choke coil, is a simple inductor often made of insulated wire wound around a magnetic core, such as iron or ferrite. Its primary role is to provide high impedance to AC signals while letting DC flow with minimal resistance. The principle behind its operation is self-inductance: when AC flows, the coil generates a counteracting voltage that opposes changes in current, with opposition increasing at higher frequencies
Specifications:-
Maximum continuous operating voltage: 415,433,
Operating frequency: 50 to 60Hz
Rated currents: 1 to 1000Amp
Protection category: IP00
Features: –
AC chokes are widely used in electrical and electronic systems, including:
Power supplies: To reduce ripple and high-
frequency noise in AC to DC conversion.
Lighting systems: In fluorescent lamps and LED drivers to limit inrush current.
AC motor circuits: To suppress harmonics and electromagnetic interference.
Audio and communication equipment: To prevent signal distortion caused by unwanted high-frequency noise.
Power factor correction circuits: As part of filters to improve efficiency in industrial systems.