Category: Digital Electronics Projects

In the category “Digital Electronics Projects” various circuit is designed and verified using different gates and digital IC.

Multi-Switch Relay Control with EX-OR Gates

Engineeering Projects
relay control with ex or gate

Many electronics enthusiasts love to design their custom control circuits. Today, we’re exploring an interesting circuit that accomplishes single relay control through multiple switches. This circuit accomplishes this achievement and introduces the utilization of EX-OR gates within control systems. Check out the article on “How to make relay switch circuit” Before we delve into the circuit’s details, let’s first understand what an EX-OR gate is. Exclusive OR Gate An exclusive OR gate, often abbreviated as EX-OR performs the following logic “The output of a 2-input Exclusive OR gate assumes the…

Read More

Simple Intruder Alarm Circuit

Engineeering Projects
receiver unit of intruder alarm circuit

In a world where safety and security are a major concern, imagine having a reliable intruder alarm system that can offer peace of mind. Here is a simple intruder alarm circuit that does not need a deeper understanding of electronics. These homemade security solutions are cost-effective also. So, if you are a DIY enthusiast or just curious about creating your own security setup. Here is a customized intruder alarm circuit that suits your needs perfectly. Let’s dive into its description and working methodology. Circuit Description of Intruder Alarm Circuit The…

Read More

Making Your Own Dual-Tone Doorbell Circuit Diagram

Engineeering Projects
dual tone doorbell circuit diagram

Imagine opening the door to a gentle ding-dong sound that evokes the charm of classic electric bells. With our simple tutorial, you can create a simple yet attractive dual-tone doorbell circuit diagram that generates this lovely sound. Let’s plunge into the details of the circuit. Description of Dual-Tone Doorbell Circuit Diagram Our inventive dual-tone doorbell circuit diagram is assembled around the versatile IC CD40106, also known as a hex Schmitt-trigger inverter (referred to as U1). For precise triggering and to prevent any unintended activations, we’ve cleverly integrated an R-C filter…

Read More

Digital Circuit Tester using 4049 IC

Engineeering Projects
digital circuit tester using 4049 IC

Digital circuits are an essential part of modern technology, and they power everything from smartphones to computers. However, detecting faults and troubleshooting digital circuits can be challenging, especially for those who are new to electronics. Here, we present a simple and versatile digital circuit tester that can help you identify problems in your circuits quickly and easily. Description of Digital Circuit Tester using 4049 IC The digital circuit tester described in this article is built around a CMOS hex inverter buffer CD4049 that contains six independent inverters labeled a-f. Inverter…

Read More

Variable Duty Cycle Oscillator using 74123 IC

Engineeering Projects
variable duty cycle oscillator

IC 74123 is a digital IC called a dual re-triggerable monostable multivibrator or a one-shot. It has two identical circuits that can be used for things like generating pulses or delaying signals. You can use the IC 74123 by connecting it to other parts like resistors and capacitors and then using one of the trigger inputs. This will start a timing cycle that lasts for a certain amount of time, depending on the values of the other parts. One of the great things about the IC 74123 is that it…

Read More

Calling Bell Circuit Diagram

Engineeering Projects
Calling Bell Circuit Diagram

In this article, we are satisfying the curiosity of electronics hobbyists, you and I alike by making a calling bell circuit diagram. The project can be set up in different rooms of an office or hospital and the attendant or office boy waiting place or nursing station. When a call is made from any of the rooms the attendant can be notified through the bell and he/she can verify the room from which the call is made by looking at the display showing the room number. Thus this project allows…

Read More

Multiplexer IC Interfacing | CD4051

Engineeering Projects
author prototype of multiplexer cd4051

In this article, we will discuss Multiplexer IC interfacing and different type of multiplexers like Quad 2-input Multiplexer, Dual 4-input Multiplexer, and 8-input multiplexer. We will also show you how to interface with 8-channel multiplexer IC CD4051. Quad 2-Input Multiplexer | Multiplexer IC Interfacing | CD4051 Description: One of the most widely used digital multiplexer configurations is the quad, 2 -input version illustration in figure 1. This particular IC is non-inverting and consists of eight AND and four OR circuits, arranged so that two sets of 4-bit inputs can be…

Read More

Motor Controller Circuit for Washing Machine

Engineeering Projects
motor controller circuit for washing machine using 555

Washing machines have been an important part of our daily life. But, the issues we have to deal with in a few months of using them make it more difficult. Previously, we had already posted the Automatic Washing Machine control circuit. It is because most of the washing machines have a single-phase motor incorporated in the system and the timing and direction of the motor are controlled by an external mechanical switch which gets worn out so easily and is not economical on the other hand. And, the project “Motor…

Read More

4-line to 16-line decoder Circuit using 7442

Engineeering Projects
4 to 16 line decoder circuit

Decoders are essentially an arrangement of logic elements that are combined to change from are digital code to another. The term ‘decoder’ is most frequently used but depending on the point of view, the term ‘encoder’ is equally correct. Figure 1 shows the circuit diagram of a 4-bit, 4-line to 16-line decoder using two 7422 4-line to 10-line decoder IC . The input A, B, C and D can represent any logic function and the output 1 through 16 will then provide the addition or the logic or function of…

Read More

DIY Resetting Protector Circuit for Computer

Engineeering Projects
block diagram of resetting protector circuit

Introduction to DIY Resetting Protector Circuit for Computer With the speed of development in technology, it is no wonder that a number of software have been developed to prevent computers from quick execution of rushed commands which are mostly accidental issues. However, even the most advanced computer programs do not offer protection against the accidental operation of the panel-mounted reset switch. This often leads to incomplete installation of software, improperly closed files, and results in useless memory accumulation in the hard disc. Therefore we need a device which can prevent…

Read More
  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4