12 V Battery Charger with overcharge and deep-discharge protecting

Engineeering Projects
circuit diagram of 12V battery charger

Introduction of 12 V Battery Charger with overcharge and deep-discharge protecting Mostly in broad projects, we have seen lead-acid storage cells are often used as a backup source of electrical energy during periods of supply line failure so that the system operates efficiently. In case of mains supply failure, the energy (i.e. electrical) stored in the cell is used and later when the mains supply is available, the energy in the cell is restored from the mains through a device named a charger. The cell undergoes chemical processes during the charging…

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5 State Digital IC and Circuit Tester

Engineeering Projects
circuit diagram of 5-stage digital IC and circuit tester

Quite often electronics engineers and technicians come across the problem of fault-finding or testing electronic circuit boards full of digital integrated circuits. A handy and quick look-tool ‘5-State Digital IC and Circuit Tester’ for such an analysis is a logic probe that does the job faster and easier by just touching this probe to different pins of various ICs and observing the logic levels. Introduction to 5-State Digital IC and Circuit Tester Most of the commercially available logic probes show only two distinct levels of logic ‘0’ and logic ‘1’ corresponding…

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Fridge Alert System Circuit

Engineeering Projects
fridge alert system circuit

Different range of temperature levels settings is available in the refrigerator; varying form low, normal up to high cooling. These ranges don’t provide a precise temperature. At times, we might need to set a limit of the temperature in the fridge for some reasons like to store certain types of foods or to get the exact accuracy of temperature we want. This circuit serves us right. The project entitled “Fridge Alert System circuit” is designed for the fridge. With the help of this project, we can detect exact temperature of…

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Low Voltage Motor Speed Regulator

Engineeering Projects
IC design of Low Voltage Motor Speed Regulator

You might have noticed that the speed of DC motor is not stable throughout the project. It is because, as per the concentration or density of load on the DC motor, its rotational speed varies. For particular projects we require DC motors to operate with a constant speed. This is where this project; ‘Low voltage motor speed regulator’ is applicable. However as depicted in the project title, it can be used only with the low voltage motors. This chip is used to regulate the speed of low voltage (5 to…

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GSM based notice board Using AT89c52

Engineeering Projects
circuit diagram of GSM based notice board using at89c52

Lately, in the field of electronics use of GSM modules has been incorporated in almost 50% of the circuits for the wide range of benefits it offers. The project “GSM-based notice board Using AT89c52” also takes an advantage of the GSM module to design an electronics notice board. Being wireless, it avoids the requirement of messy wires for circuit design with LCD interfacing. It consumes less power and is easy to operate. And the main point is that it is portable. Who would deny such a circuit over a maze…

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Beeper for Automobile Flasher Using 555

Engineeering Projects
circuit diagram of beeper for automobile flasher

Flashing light is a good way to alert people around but is not the best measure. Ears can hear when eyes cannot see. Therefore using a beeper circuit is the best remedy and this concept has been utilized in modern automobiles and also included in multiple other applications. The project ‘beeper for automobile flasher’ can be implemented in old automobiles (scooters, motorcycles) where there is no beeper circuit along with a flasher. It can also be included in many other alerting projects which employ flasher circuits.  Working of Beeper for…

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Pulse Generator Circuit Cum Timer Circuit

Engineeering Projects
circuit diagram of pulse generator cum timer circuit

A pulse generator circuit cum timer circuit is a multipurpose instrument. In the case of the electronics field, it is that apparatus without which the design of the project becomes a complicated task. Multiple types of such circuits might have been available in the market. But the circuit we are going to discuss here overshadows them with the range of features it offers variable frequency, variable pulse width, and variable amplitude. To add more to it, we can use this instrument like a timer too in case of need. It…

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Electronics Gambling Game Circuit

Engineeering Projects
circuit diagram of electronic gambling game circuit

Gambling is quite fun if played wisely. Due to the fact that rolling of dice can be disturbed and may not be precise, use of dice might not be more appealing. The game can be modernized in the form of electronics circuit. This project, ‘Electronics Gambling Game Circuit’ is the result of such thoughts. This project makes the game more precise and at the same time is much simple and inexpensive. With the fact that any normal individual after gathering basic knowledge from electronics can design this electronics game, this…

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Grasshopper Sound Generator Circuit using 555 Timer IC

Engineeering Projects
circuit diagram of grasshopper sound generator

Electronics projects just because of the name must not, always be complicated and advance level projects. Small projects play a vital role in the field of electronics. Here is a similar basic project which is named, ‘Grasshopper Sound Generator Circuit Using 555’. The project will surely entertain children and for electronics beginners, this project is the best option to start with. Especially at night times, we do often hear the shrill sound of grasshopper or cockroach. This project also produces a similar sound (PI-PI sound like grasshopper) and for this…

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Christmas Decoration Circuit With Music

Engineeering Projects
circuit diagram of Christmas decoration

Simply, by name of the project ‘Christmas Decoration Circuit With Music’ it can be easily understand that this project is concerned about decoration. Different kinds of item are available nowadays in the market for decoration. Where you can buy/pick one of the item from market or you can make it one. The interest lies on the things you have created with yours owns. Definitely, this project is your interest and can be used in Christmas decoration. Circuit Description of Christmas Decoration Circuit With Music : – The circuit of Christmas…

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