Electrical Engineering Guides

Power Systems

Maxwell Inductance Capacitance Bridge: Diagram & Applications

What is Maxwell Bridge A Maxwell Inductance Capacitance Bridge (known as a Maxwell Bridge) is a modified version of a Wheatstone bridge which is used to measure the self-inductance of a circuit. A Maxwell bridge uses the null deflection method (also known as the “bridge method”) to calculate an unkn

By Electrical4u 03/28, 2024
Power Systems

Anderson′s Bridge | Advantages Disadvantages of Anderson′s Bridge

Anderson’s Bridge Let us understand why there is a need for Anderson’s bridge though we have Maxwell bridge and Hay’s bridge to measure the quality factor of the circuit. The main disadvantage of using Hay’s bridge and Maxwell bridge is that they are unsuitable for measuring the low-quality factor.

By Electrical4u 03/28, 2024
Power Systems

Kelvin Bridge Circuit | Kelvin Double Bridge

Before we introduce Kelvin Bridge , it is very essential to know what is the need of this bridge, though we have Wheatstone bridge which is capable of measuring electrical resistance accurately (usually an accuracy of around 0.1%). To understand the need of Kelvin bridge we must first recognize 3 im

By Electrical4u 03/28, 2024
Power Systems

Wheatstone Bridge Circuit Theory and Principle

Wheatstone Bridge For measuring accurately any electrical resistance Wheatstone bridge is widely used. There are two known resistors , one variable resistor and one unknown resistor connected in bridge form as shown below. By adjusting the variable resistor the current through the Galvanometer is ma

By Electrical4u 03/28, 2024
Power Systems

Blavier Test | Murray Loop Test | Varley Loop Test | Fisher Loop Test

Blavier’s Test is used to find the earth fault location in an underground cable. The two ends faulty cable are mentioned as sending end and far end respectively as shown in fig 1. In this test, the sending end of the cable must be open and isolated and the resistance between sending end and earth po

By Electrical4u 03/28, 2024
Power Systems

De Sauty Bridge

This bridge provide us the most suitable method for comparing the two values of capacitor if we neglect dielectric losses in the bridge circuit. The circuit of De Sauty’s bridge is shown below. Battery is applied between terminals marked as 1 and 4. The arm 1-2 consists of capacitor c 1 (whose value

By Electrical4u 03/28, 2024
Power Systems

Heaviside Bridge Circuit

Before we introduce this bridge let us know more about the uses of mutual inductor in bridge circuits. Now one question must arise in our mind that why we are so much interested in mutual inductance , answer to this question is very simple we will use this mutual inductor in Heaviside bridge circuit

By Electrical4u 03/28, 2024
Power Systems

Hay’s Bridge: A Method for Measuring Self-Inductance

Hay’s bridge is a type of AC bridge circuit that is used to measure the self-inductance of a coil with a high-quality factor (Q 10). It is a modified version of Maxwell’s bridge, which is suitable for measuring coils with a medium quality factor (1 Q 10). In this article, we will explain the constru

By Electrical4u 03/28, 2024
Power Systems

Voltage Controlled Oscillator | VCO

Voltage controlled oscillator (VCO), from the name itself it is clear that the output instantaneous frequency of the oscillator is controlled by the input voltage . It is a kind of oscillator which can produce output signal frequency over a large range (few Hertz-hundreds of Giga Hertz) depending on

By Electrical4u 03/28, 2024
Power Systems

Crystal Oscillator: Circuit, Frequency & Working Principle

Crystal oscillators operate on the principle of inverse piezoelectric effect in which an alternating voltage applied across the crystal surfaces causes it to vibrate at its natural frequency. It is these vibrations which eventually get converted into oscillations. These oscillators are usually made

By Electrical4u 03/28, 2024
Power Systems

Gunn Diode Oscillator: What is it? (Theory & Working Principle)

What is a Gunn Diode Ocillator? A Gunn Diode Oscillator (also known as a Gunn oscillators or transferred electron device oscillator) are a cheap source of microwave power and comprise of Gunn diode or transferred electron device (TED) as their major component. They perform a similiar funciton as Ref

By Electrical4u 03/28, 2024
Power Systems

Wien Bridge Oscillator: Circuit And Frequency Calculation

What is a Wien Bridge Oscillator? A Wien-Bridge Oscillator is a type of phase-shift oscillator which is based upon a Wien-Bridge network (Figure 1a) comprising of four arms connected in a bridge fashion. Here two arms are purely resistive while the other two arms are a combination of resistors and c

By Electrical4u 03/28, 2024

Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

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Maxwell Inductance Capacitance Bridge: Diagram & Applications

Anderson′s Bridge | Advantages Disadvantages of Anderson′s Bridge

Kelvin Bridge Circuit | Kelvin Double Bridge

Wheatstone Bridge Circuit Theory and Principle

Blavier Test | Murray Loop Test | Varley Loop Test | Fisher Loop Test

De Sauty Bridge

Heaviside Bridge Circuit

Hay’s Bridge: A Method for Measuring Self-Inductance

Voltage Controlled Oscillator | VCO

Crystal Oscillator: Circuit, Frequency & Working Principle

Gunn Diode Oscillator: What is it? (Theory & Working Principle)

Wien Bridge Oscillator: Circuit And Frequency Calculation

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