Diodes: Explained.

 

In this article, we will be covering that what is a diode and what do diodes do. 

Diode:

            A diode is a device or component that allows current to flow in only one direction. LED is a type of diode. It's a diode that emits light but the diode we're concerned about is not a light-emitting diode.

                                     

If you have the diode connected so that it allows current to flow through the circuit, if you now stop the circuit and disconnect this diode, turn it around to swap the polarity of it and then reconnect it to the circuit. If you go ahead now and power up the circuit, nothing happens. No current is being allowed to flow through the circuit. This diode is stopping the current from flowing because it is now what you call reverse biased diodes. These are made up of semiconductor material and that means that they have the ability to both conduct and oppose the flow of current.

I am going to keep this simple so I'm not going to go into all the technical ways that diodes work for article as it can clear the basic concept of a beginner. All you need to know is that this diode will just block current flowing from one direction but it will allow it from the other direction so if you now go ahead and disconnect this diode, again flip it, either way, reconnect it and then power the circuit, it allows current to flow and there are many uses for diodes.