LED (Light-Emitting Diode), Resistor, and a Battery

Below is the circuit diagram for an LED (Light-Emitting Diode) circuit. The circuit will light up an LED with the 9V battery. LEDs are just tiny light bulbs that are used in electrical circuits. Unlike ordinary incandescent bulbs, they don't have a filament that will burn out, and they don't get especially hot unless too much current is applied. They are illuminated solely by the movement of electrons in a semiconductor material, and they last just as long as a standard transistor.


To light up an LED you will need at the very minimum the LED itself, 470 Ohm resistor, a 9V battery, and a Solderless Breadboard.

LED pins

LED and Battery Circuit Diagram

LED and Battery Circuit on the Breadboard

Parts list for the project:

  • BAT1: 9V Battery This battery is commonly used to connect to power the breadboard
  • D1: LED A type of diode that illuminates when electricity passes through it. Unlike an RGB Led, this one has a defined color.
  • R1: 470 0hm Resistor Resist the flow of electrical energy in a circuit, changing the voltage and current as a result.
  • Solderless Breadboard: Solderless Breadboard Terminal Strip