A light-emitting diode is referred to as a LED and it is a semiconductor light source. The purpose of the project was to successfully construct a flashing LED by correctly installing the proper components by soldering the resistors, variable resistor, LED’s, capacitors, 9v battery snap and transistors with a soldering iron, and then develop a thorough explanation on how the LED operates. After the completion of the kit, it will be hooked up to the voltage source and will initiate the LED’s to flash at nine volts. I use nine volts exclusively because it will be destroyed almost instantly because too much current will pass through and burn it out.
The object that makes the LED’s flash is the transistors. The transistor acts as a switch mechanism that activates the LED’s. If the transistor is forward biased, then the light will turn on because it is connected to ground. To be able to forward bias the transistor, the emitter must be negative, the base must be positive, and the collector must be positive. This transistor is referred to as an NPN transistor (Negative, Positive, Negative). Also the LED is forward bias when the positive voltage source is connected to the anode and then current will flow in the circuit. The variable resistors are adjustable so that will allow the time constants to change depending on the degree of how it was turned. Based on the direction of the variable resistor was turned: the rotation to the left for the variable resistor, the faster the time constant becomes. In contrast, the rotation to the right for the variable resistor, the slower the time constant becomes.
I learned that LEDs do dozens of different jobs and are found in all kinds of devices and form the numbers on digital clocks, send data from remote controls and initialize traffic signals. Also, LEDs can be mass produced because they are extremely affordable to produce in large numbers.
The new traffic lights you are seeing are made out of arrays of...