Electronic is fun to learn, especially if you can learn it by building your own circuits. To help you with that, Circuit Digest provides you with a list of popular Electronic circuits and Electronic projects with well illustrated circuit diagram and detailed explanation for a complete do-it-yourself experience. All projects are tested and verified with a working video for a hassle free learning experience. Whether you are an expert or beginner in electronics, we have something interesting for all of you. Below is our huge collection of 200+ free electronic circuits that you can build today.
The SR flip flop using NAND gate truth table is a basic sequential logic circuit that holds one bit of digital information. This extensive guide goes over the general SR flip flop circuit diagram with explanation, a discussion of the truth table, and its implementation using IC SN74HC00N. If you want to become proficient in digital electronics and sequential circuit design, it's important to…
You have seen street light which automatically gets turned on in the night and gets turned off in the morning or day time, there are sensors who senses the light and control the light accordingly. These Street lights are an important project in smart cities.
So here in this project, we are going to make a Simple…
Door Bells are available in lot of variations in market which generate different sounds but the most common sound of a Door Bell is “Ding Dong”, so this time we have decided to make a Door Bell Circuit with a Ding Dong sound by using 555 timers.
Components Required: 555 Timer IC -2 Speaker Bread Board Resistors 330ohm, 2k, 10k ohm 50k…
Detection of air flow is useful in many projects and applications. Here we are building a very simple circuit to detect the air flow presence. This circuit doesn’t require any fancy stuff like Resistance Temperature Detector (RTD) or Zener diode etc. Here we are using a simple AC bulb filament with some cheap component to detect the air. This is very interesting project…
If Subwoofer in your music system is not producing enough bass then you can use this simple DIY circuit to enhance the Bass. In this project we are going to design a Subwoofer Amplifier Circuit Using IC TDA2030 with few cheap components. This TDA2030 Amplifier can produce 14watt output and this can be increased upto 30watt by using another TDA2030. Also check our previous…
The name of the circuit itself infers the application. This circuit triggers the alarm if the door of Fridge is left open for the long time. When the door of the refrigerator is left open, the temperature inside the cabin will increase. This rise in temperature will be sensed by thermostat and try to cool down the cabin. It will always try to maintain constant temperature of…
Home Automation has always been a hot buzzing topic to learn or to work on. It is really cool to control AC appliances wirelessly. There are lots of ways to do this and imagination is the limit. In this project we will learn the most simple and easy way to build a Wireless Home Automation Project in which we can toggle AC loads by using 433 MHz RF transmitter and receiver…
Quiz is an important event in any school/College institution to test the knowledge of the participants. In order to increase the difficulty, the spontaneity of the participants is also tested in which the reaction time of the participants also matters. So, to indicate the person who is ready first to answer the question has to push the buzzer. It is also hard for a judge or…
In this project we are going to design a Simple Time Delay Circuit Using 555 Timer IC. This circuit consists of 2 switches one for start the delay time and other for reset. It also has a potentiometer to adjust the time delay, where you can increase of decrease the time delay by just rotating the potentiometer.
Here we have used 9 V battery and 5V…
Making our projects Wireless always makes it to look cool and also extends the range in which it can be controlled. Starting from using a normal IR LED for short distance wireless control till an ESP8266 for worldwide HTTP control there are lots of ways to control something wirelessly. In this project we will learn how we can build wireless projects using a 433 MHz RF module…
It is always interesting to build things that could be used in our day to day life and it gets more interesting when the same can be built easily at a very low cost. In this tutorial we will learn how to build a simple yet powerful MP3 player that could play any MP3 song, the volume and track can also be adjusted with the help of push buttons. With some extra effort you can…
Certain crystals like Barium titanate, Quartz, Lithium tantalite, etc. have the property of producing electricity on applying a force or pressure over them under specific arrangement. Also, they can work in inverse by transforming the electrical signal applied across them into vibrations. Hence, they are used as transducers in many applications. They are called as…
