Did you know that why transistor is called current amplification device? If you don’t know then don’t worry because today in this article we are going to answer you.
Basically, transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. When a transistor is properly biased, it can amplify a given weak signal up to 400 hundred times. Reason behind it is that it has low output resistance and thus higher current gain is achieved.
Current amplification factor for a transistor, which shows by how much times a current given at the input is increased at the output. It clearly indicates that transistor is a current amplification device. Thus, it can be used to enhance the strength of a given weak signal. The energy required for amplification is taken from power supply.