Astable Multivibrator Using NE555 | Full Wiring, Output & Simulation.

How are you all? I hope everyone is well and healthy by the grace of Allah. Today I will share with you the Astable Multivibrator 555 Timer IC diagram and simulator.

Edited with Canva.

The 555 timer is a widely discussed and very popular IC in the world of electronics. It is equally important for everyone from beginners to professionals for its reliable performance and precise time control. Here I have created an astable multivibrator circuit, where the 555 IC generates a square wave signal continuously. As a result, the LED flashes and blinks repeatedly, creating a beautiful pulse. This small circuit can be used for various purposes, including timing, flashing indicators, tone generation, etc.

Materials used

1️⃣ NE555 Timer IC

2️⃣ Resistor R1 1kΩ and R2 1kΩ

3️⃣ Capacitor C1 100 µF/25 V

4️⃣ Capacitor C2 0.01 µF

5️⃣ LED

6️⃣ LED Series Resistor 220Ω

7️⃣ DC Power Supply 5V

Now I am starting the diagram step.

Step -01

First, you can see that I have drawn a picture on white paper, which is the 555 Timer IC, and you can see its pinouts that I have taken.

Step -02

Now you can see that I have given a positive line connection in red colour on the top, and here pin number eight of the IC and pin number four are connected to positive. Then pin number one is connected directly to ground, and pin number five is connected to ground with a 0.01 µF capacitor.

Step -03

Now you can see that I have placed two resistances in the series line, and a capacitor is placed with it, 100 uf 25 volts. Here, the higher the value of the capacitor, the less the LED blinking will be. And you can see that I have placed 1k resistance here; you can put 2k or 3k if you want. Then I have given an LED connection to the pin number three output, and the positive line is given to pin number three, and the negative connection of the LED is given to the ground.

Step -04

Finally, you can see that I have drawn a 5-volt power supply diagram here, which will work as an output. If you want, you can watch the simulation video of how I made the connections and took the output.

In this circuit the 555 IC creates a continuous square wave, due to which the LED blinks at a certain speed. Changing the value of R1, R2, and C1 also changes the blink speed.

Video Tutorial: To better understand the practical part of this tutorial, you can watch the video below.

NE555 Timer IC Pin Out and Their Functionality,

Pin Number	Pin Name	Function
1	Ground	Ground Connection
2	Trigger	Triggering IC
3	Output	Output Signal
4	Reset	Reset Function
5	Control Voltage	Output Control
6	Threshold	Timing Setting
7	Discharge	Capacitor Discharge
8	VCC	Power Supply

🟩 Thank you for reading my post and giving your valuable time. Stay well and stay healthy. God bless you. 🟩

Photography Details	📱 Device: Walton Xanon90	📍 Location: Narayanganj, Bangladesh	📷 Captured By: @imranhassan