What is Current Source?
A current source can be defined as any device in a circuit which either delivers or absorbs the current in the circuit. The voltage across the current source is independent of voltage developed across it. It is necessary to maintain a constant current in that branch of circuit even when load is changed.
Symbol and Representation
A current source is represented with a circle with a symbol of arrow inside to indicate the direction of current flow. There is no indication of voltage in the representation since current is independent of voltage developed across it.
Some examples of current sources are diodes, operational amplifiers, photoelectric cells, collector currents of transistors.
Current Source
A current source is an integral part of electronic circuits which is used for supplying current in the circuit. In this article, we will discuss these current sources along with their types. We will also learn about their nature through some characteristics. These characteristics when put to use can be applied at various places which have been discussed through the applications. We will conclude the article with some points and list some frequently asked questions for reference.
Table of Content
- What is Current Source?
- Types
- Characteristics
- Current Source Vs Voltage Source
- Applications
- Current Source in Electronic Devices