Category: Electronics Design

LEDs are probably the only components to offer a wide range of applications. It can be used either to describe the working of the circuit or with LED itself, a complete circuit can be developed. The LED flasher circuit makes use of this amazing component to turn it flash on and off. The LED flasher circuit employs a voltage source, capacitor, and LED. This project requires voltage supplies varying from 1.15 volts to 6 volts typically because of which the circuit can be operated with a single battery cell making…

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The project entitled, ‘ Video Game RF modulator’ is a small portion of the gaming circuit. Here this circuit can be divided into two different sections: an RF oscillator and the RF modulator, as per the functions each of them carry out. The oscillator section comprises an external LC network that is tuned to the preferred TV channel which is not used in the TV network, generally Channel 3 or 4. The audio and the composite video signal act as a modulator for the output signal (which act as the…

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If you have observed quite a number of electronic projects, you must have noticed that different range of frequencies is used, sometimes all in a single project. To assist this requirement, this circuit “Organ Circuit” has been developed. The project entitled ‘Organ Circuit | Top-Octave Generator’ produces 12 distinct output frequencies. A single circuit produces 12 frequencies and each of them is different? Might sound a lot more complicated. However, the circuit uses only one parameter to serve this variation, which is the supplied input frequency to the chip. The…

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This IC includes a 3-stage FM-IF amplifier/limiter arrangement with level detectors for each stage and a balanced quadrature FM detector. As illustrated in Figure 1, the quadrature-tuned circuit requires two external coils, a capacitor and resistor and a single adjustment. Most ICs of this type also include an audio amplifier as well as a driving circuit for the tuning meter output, automatic frequency control (AFC) for the FM tuner, and AGC for the RF amplifier stage. The muting sensitivity control is optional and provides automatic muting (squelching), if desired. An…

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The circuit designed hereby constitutes of the major portion of every AM/FM receiving system. It can be used to design a complete AM/FM receiving system. Addition of components like audio power amplifier, AM converter (mixer and local oscillator, AMIE detector, FM IF and FM detector) form the internal building block of entire receiving system. However, for the receiving system to function flawlessly, external components like capacitors, coils, and resistors need to be included in the circuit which is obvious necessity. The operating characteristics such as bandwidth and gain of the…

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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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People are often injured badly and hospitalized with accidents due to the flow of current in the faulty circuits. To prevent this, a circuit ‘Ground fault interrupter’ has been developed. This circuit employs additional components along with a ground fault interrupter chip to produce a complete ground fault interrupter circuit. Check out more other electronics design related article posted in bestengineeringprojects.com The sole purpose of this particular circuit ground fault interrupter is to stop the flow of current in an electrical circuit when an electrical fault/short circuit, occurs. A sensing…

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