Transistor word breakup- The words trans mean transfer
property and Transistor mean resistance property offered to the connection. In other words, it is
a shifting device that controls and increases electrical signals such as voltage or current.


A transistor is a device that controls current or voltage flow while also acting as a switch or way in for
electrical signals. In fact emitter is the part that delivers the majority of the charge carrier. In 1947, three
scientists at Bell Laboratories developed the transistor. It surpass the vacuum tube as an electronic
signal regulator. The transistor established itself as a reasonable possible replacement to the electron
tube. A transistor normally has three electrical leads known as the emitter, collector, and base. Electrical
current pass from the emitter (or source) of a semiconductor material to the collector of most
semiconductor devices. Thus the transistor established itself as a reasonable option to the electron


To raise a small electrical signal we use a transistor similarly it is an important feature in
amplification systems. Subsequently it was recognized at Bell Labs that semiconductors could
guide to solid-state alternatives to the electromechanical switches and electron-tube amplifiers
used throughout the nationwide Bell system. It is a switching device that controls and amplifies
electrical signals such as voltage or current.

The symbols for transistors

There are various varieties of transistors available as per their construction, functioning,
operating principle, and applications. Likewise NPN transistors and PNP transistors are the two
kinds of transistors. Still the basic element of a transistor is its three terminals. These pins are:
collector (C), base (B), and emitter (E) on a bipolar junction transistor (BJT) (E). The NPN and
PNP BJT circuit symbols are described below:

A transistor consists of three terminals: emitter, collector, and base.

The emitter is the part that delivers the majority of the charge carrier. A forward bias
arrangement always couples the emitter.

Collector – The collector is responsible for collecting the majority of the charge carriers
supplied by the emitter. Its major function is to eliminate the most of the charges at its
junction with the base.

Base – The base is the center part of the transistor


So, in this section we will learn about the transistor’s uses in everyday life. Hence, current
controls this tool. A transistor has high voltage ratings, high currents, and low temperature
sensitivity. The size of the base current is low. Electrons from the base current move into the
collector region or create holes in the base region. Transistors are among the most using devices
now a days because they are set up in most cellular phones. In every cell phone a transistor
amplifier is using






AN EXAMPLE – transistor is one of the most widely used devices today and is commonly found in cellular
phones. A transistor amplifier is used in every cell phone.


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