Question

what is a choke coil

Answer 1

An inductor commonly used in AC power supplies that convert AC to DC, used to reduce ripple (hum) in the output. Some can be quite large (several Henrys) using an iron core to attain. To prevent core saturation sometimes the core has an "air gap", this is sometimes referred to as a "swinging choke"

Answer 2

Note. The choke does not convert AC to DC in the power supply, but used to reduce the residual AC or ripple from the power supply, usually located in the "output filter" section of the power supply.

Answer 3

There are other chokes besides the one I described. There are RF (radio frequency) chokes which again are inductors, but usually small in the micro-henrys range, there are audio chokes usually in the smaller Henry and millihenry range. There purpose is to impede or oppose AC currents at the appropriate frequency.

Answer 4

Those designed for the higher frequencies may not have any iron cores. One word answer is "Inductor"

Answer 5

Good luck with your studies. I appears that you are typing, I will standby here for a few minutes more, then I must go.

Answer 6

In electronics a choke is an inductor used to block higher-frequency alternating current (AC) in an electrical circuit, while allowing lower frequency or DC current to pass.