Category: Basic Electronic Projects

Different electronic project for entry level which are easy to build and understand.

Dual Polarity 5v from 9v Battery

Engineeering Projects
simulation of plus minus 5V supply

Almost all electronic devices used in electronic circuits need a dc source of power to operate. The source of dc power is used to establish the dc operating point for the passive and active electronic devices in-corporate in the system. This day almost all circuits 5V regulated power supply but an operational amplifier requires a dual power supply (positive and negative) for proper operation, while we are using the battery power supply for a circuit then it would be difficult to get a dual polarity power supply. In order to…

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Zener Diode Tester Circuit

Engineeering Projects
modified circuit diagram of zener diode tester

One of the most important uses of the zener diode is in making the constant voltage power supply. Its works are based on the fact that in the reverse breakdown (Zener) region, a small change in voltage across the zener diode produces a very large change in current through the circuit but the voltage across the Zener remains constant. In this article, we have posted two different circuits to test the zener diode i.e. general Zener diode tester circuit and modified Zener diode tester circuit Here, is a circuit that…

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DIY Strobe Light Circuit

Engineeering Projects
circuit diagram of DIY strobe light

Here is one another application of one of the most versatile IC NE555, the DIY Strobe light circuit. A strobe light is also called a stroboscopic lamp and is used to produce a regular flash of light. The general strobe light has a very high flash energy of about 150 joules and very few milliseconds of discharge time. Due to this property, it emits flash power of several kilowatts. Various types of strobe light circuits using xenon flash lamps, flash tube, LEDs, etc. posted on bestengineeringprojects.com are listed below:- High Brightness…

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Simple Signal Injector Circuit

Engineeering Projects
circuit diagram of signal injector

Here is a project of a Simple Signal Injector Circuit. Don’t think it’s just “another one”; see the advantages it offers over some other injectors: Commercial injectors working on 1.5V are rather large in size to be carried in a shirt pocket. You can carry this injector quite easily in a shirt pocket because the whole device can be assembled in a pencil cell holder. This circuit will give you a battery life of about two a single pencil cell. Most important of all, this injector will cost you at…

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Clock Signal Generator Circuit

Engineeering Projects
circuit diagram of clock generator using op-amp

Circuit diagram of  Clock Generators using Astable Multivibrator,  Clock Generator using Timer IC 555,  Clock Generator Using Digital Inverter IC,  Clock Generator using OP-AMP Objectives of Clock Signal Generator You might have noticed a common thing in most digital integrated circuits, which is a frequent need for a continuous pulse train defined as a clock pulse for the precise operation of the circuit. Since most sequential logic devices such as flip-flops, counters, registers, etc. favor a synchronous mode of operation, the need for the clock is felt more pronounced in…

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Op-Amp 741 Based Sound Operated Light

Engineeering Projects
circuit diagram of sound operated light

Op-Amp 741 Based Sound Operated Light Circuit Diagram, Circuit Description with Working Principle and Parts List Introduction to Op-Amp 741 Based Sound Operated Light In contrast to where so far the technological development has brought us, this project might seem so plain, but it is a basic project that supports advanced projects, helps newcomers in the electronics field to understand the fundamentals, and being much economical provides extra credits to the users. This mini-project op-amp 741 Based Sound Operate Light builds up a small gadget/device which can be employed to turn…

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Automatic Plant Watering System Circuit

Engineeering Projects
automatic plant watering system circuit diagram

If you are one of those people who would like to spend their well-earned summer vacations in the comforts of a hill resort but are worried about your potted companions back home, then a  plant watering system is what you need. The project “Automatic Plant Watering System Circuit” immediately waters the plant once the soil turns dry. By adding timer circuits and other components, we can extend the flexibility of this project and make further improvements such that it operates automatically at the duration set by the timer. Circuit Description…

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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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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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Telephone Amplifier Circuit

Engineeering Projects
circuit diagram of telephone amplifier circuit

Telephone talks are meant to be private or kept in between two persons engaged in the conversation. But, sometimes it is also necessary to have a group talk. The project entitled Telephone amplifier circuit serves us right. It is very simple, yet inexpensive and useful which uses very common power amplifier LM386 and some more components. The circuit can be used to produce loud sound to discuss or start a conversation in a group through telephone. Working of the  Telephone Amplifier Circuit The signal emitted as output from telephone is…

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