Diodes and LEDs

 

 

 

 

A diode is used as a one way switch. This means that it allows the current to flow in a direction, but does not let it flow in the opposite. 

That is the function of a normal diode, but diodes can be modified to do different functions, light a LED.

LEDs (Light Emiting Diodes) are essentially semiconductor devices that emit light when current passes through them.

 

Now, how much energy do diodes and LEDs use?

A diode uses around 0.5V or 0.8V,            A LED uses between 1.8 and 3.3 volts, as  

as we can see in this simulation:              seen in the simulation:

 

Tinkercard Simulation

Tinkercard circuits simulator

Symbol of a LED

                                   

Symbol of a diode

 

 

 

      

 

Real LED

Real Diode