Mar 09,2023
What is the power choke?
A power choke, also known as a power inductor or a DC choke, which is an electronic component used in power electronics circuits to filter out unwanted high-frequency noise or ripple currents from a DC power source.
It is essentially a coil of wire wound around a magnetic core. When a DC current flows through the coil, it creates a magnetic field that stores energy. As the current changes direction, the magnetic field collapses and releases the stored energy in the form of a voltage spike. The power choke can be designed to have a specific inductance value, which determines the amount of energy that can be stored in the magnetic field and the frequency range over which it can filter out noise.
In power electronics circuits, power chokes are often used in conjunction with capacitors to form LC filters, which provide effective noise suppression. Power chokes are commonly used in applications such as power supplies, motor drives, and inverters.
