In order words, the terminal voltage of an ideal voltage source is completely independent of the load and other circuit components.Īn ideal voltage source has zero internal resistance. Based on internal resistance, independent voltage sources may also classify as,Īn ideal voltage source or constant voltage source is one that supplies fixed and constant potential difference no matter how much amount of current is drawn in the circuit. Examples of alternating voltage sources are alternators, inverters, etc. It should be noted that the change in magnitude of the voltage of an alternating voltage source is not due to the effect of any other circuit element but it varies with time. The below shows the circuit symbol of a direct voltage source. Examples of direct voltage sources are dc generators, cells, batteries, etc. The current in a circuit with a direct voltage source always flows in one direction only i.e., from positive to negative terminal. Direct voltage sources have fixed positive and negative polarity terminals which do not vary with time.
Direct Voltage Source or Time Invariant Voltage SourceĪ direct voltage source is one whose polarity of the voltage remains constant.Based on the type of voltage, independent voltage sources are divided into two types, For example, a 5V independent voltage source will maintain the voltage at 5V regardless of the amount of current drawn in the circuit. In other words, the independent voltage sources supply a voltage that is not affected or influenced by other circuit variables. The voltage source whose output voltage doesn't depend upon any circuit element is said to be known as Independent Voltage Source. Types of Voltage Sources : Based on the dependency of voltage, voltage sources are divided into two types, Examples of voltage sources are cells, batteries, dc generators, alternators, piezoelectric disks, etc. In other words, a voltage source is a two-terminal circuit component that establishes prescribed voltage across its terminals.Ī voltage source is one of the most important active elements we encounter in everyday life. What is a Voltage Source?Ī voltage source refers to a source of energy that generates potential difference across its terminal. In this article, let us learn about what is a voltage source and different types of voltage sources. All electrical and electronic circuits require a source of supply of voltage or current for their operation.Įnergy-supplying sources are considered as active components which can be a voltage source or current source. An electrical source is a circuit component that supplies electrical energy in the form of voltage or current.
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