The circuit of Traffic Lights uses a very common yet powerful device i.e, 555 Timer IC. 555 Timer IC Performance in Traffic Lightsīefore starting the simulation, let's have a look at its components briefly. We have discussed the 1st method in our previous tutorial, Let's have a look at the next one. There are many devices through which the Traffic Lights may be controlled. This makes the circuit one of the most fundamental and common circuits to understand. Traffic Light signals are so useful that 99% of the countries use them. These LEDs are enclosed in a metallic body. we define the Traffic Lights technically as: "The traffic lights are the combination of three LEDs colored as red, amber and green that are connected in a specialized circuit that gives the output from the LEDs in a specific format and this format is used to control the flow of traffic." We know all these things, but we are revising these to get the logic behind the scene. The traffic Lights show the different colored lights and these lights turn on and off in a sequence. These turns are decided by the Traffic Lights. These traffic lights direct the vehicles to start or stop moving at the road according to our turn.
One of the most fundamental traffic rules is to follow the traffic lights. Whenever we rush toward any road that has a heavy flow of vehicles, we always follow some traffic rules. In addition, we'll see some important points about the topic in DID YOU KNOW sections. How can we perform experiments with the circuit of 555 Timer Traffic Lights in Proteus ISIS?.How does the circuit of Traffic Lights work with 555 Timer IC?.What is the purpose of the 4017 IC Counter in the circuit?.What does the 555 timer do in Traffic Lights?.What is the Traffic Lights circuit with 555 Timer?.Before this, just have a look at the topics of discussion: But today, we'll see inside the Traffic Lights and find some interesting working of the circuit of Traffic Lights. We are talking about a fascinating experiment about The Engineering Projects. But some of the newer bright LEDs are fairly bright at 6mA.Hey pals! Welcome to the board. For more current, you could use transistors on each output as shown in the drawing above, (10 Channel LED Sequencer). Note that the 4017 counter will not deliver much current, and so the LED current is set to about 6mA using a 1.5K resistor in series. Thus we get 18 total counts, 9 from the first counter, and 9 from the second. When the left counter turns over and pin 3 again moves high, the sequence will repeat. As the left side counter advances, pin 3 will be low so that clock pulses cannot advance the right counter. When the right counter reaches the 10th count, pin 11 will move high enabling the AND gate on the right to pass the clock pulse to the left side counter. The 2 diodes (1n914) and 15 resistor form a AND gate so the clock pulse will be passed to the right side counter when the sequence starts. When power is applied, the 15K resistor and 10uF cap at pin 15 will reset the counters to the zero count where pin 3 is at +12 and all other outputs are at zero. The LED sequencer below shows a possible solution using a few extra parts.
#Pengganti Ic 4017 how to
The question sometimes comes up of how to cascade 4017 decade counters for more than 10 sequencial stages.