Ideal Current and Voltage Sources

By BYJU'S Exam Prep

Updated on: September 25th, 2023

Ideal current and voltage sources are fundamental concepts in electrical engineering, playing a crucial role in the operation of electronic devices and systems. They are both essential components in circuits, with unique characteristics that allow them to provide a stable and reliable source of electrical power.

An ideal current source is a component that generates a constant current that remains unchanged regardless of the load connected to it. This means that an ideal current source will provide a consistent current output even if the load resistance changes. On the other hand, an ideal voltage source produces a fixed voltage output that does not vary with changes in the current flowing through the circuit. Both of these sources are critical in many applications, such as in power supplies, amplifiers, and sensors. In this article, we will explore the principles of ideal current and voltage sources, their applications, and their limitations.

Download Formulas for GATE Electrical Engineering – Signals and Systems

Energy Sources

Energy sources refer to the natural resources or technologies that produce energy for consumption, such as electricity or heat. These sources can be divided into renewable and non-renewable energy sources, with each having its unique characteristics, advantages, and disadvantages. With the growing demand for energy worldwide, it is essential to understand the various energy sources available, their impact on the environment, and the sustainable ways of meeting the world’s energy needs. This article aims to explore the different types of energy sources and their applications, as well as the challenges and opportunities associated with the transition to renewable energy. The classification of energy sources is given below.


Independent Sources

Independent sources are fundamental building blocks in electrical engineering, providing a constant voltage or current regardless of the rest of the circuit. They are essential in the design of electronic devices, systems, and circuits, and understanding their characteristics and behaviour is crucial for the successful operation of any electrical engineering project. Independent sources can be classified as either voltage sources or current sources, depending on whether their output is fixed to a specific voltage or current level.

Download Formulas for GATE Electrical Engineering – Electromagnetic Theory

Ideal voltage Source

An ideal voltage source is a theoretical component in electrical engineering that generates a fixed voltage output regardless of the current flowing through it or the load connected to it. It is an essential component in many electronic devices and systems, providing a stable and reliable source of electrical power. Ideal voltage sources are often used in power supplies, amplifiers, and sensors, and their behaviour can be approximated by certain real-world components, such as batteries or voltage regulators. Understanding the principles of ideal voltage sources is crucial for designing and analyzing electrical circuits, as well as for troubleshooting problems that arise in these systems.It is a voltage generator whose output voltage remains absolutely constant whatever the value of the output current.

  • An ideal voltage source is a circuit element that maintains a prescribed voltage across its terminals regardless of the current flowing in those terminals.

Ideal Current and Voltage Sources

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