What You Should Know About Transistors

Transistors are small but important components that are used in nearly every electronic gadget. From phones to TVs, computers to washing machines, the small components play a vital role in ensuring proper flow of electrical signal or current from one part of the circuit to another. A transistor can make a small change in an input signal to result in a huge electrical output. In other words, the component can amplify a weak signal.

Overview of Transistors
A transistor is made of three layers of a germanium or silicon semiconductor material. Every layer has some impurities that make them have either a positive or negative attribute. When you check a transistor, you will see the layers marked as either "P" or "N". "P" indicates a positively charged layer while "N" is a negatively charged on. A JFET SWITCHES can either be PNP or NPN depending on how the layers have been configured.

There is no real major difference between a PNP or NPN transistor configuration. The configurations simply determine whether voltages required for the transistor to work should be negative or positive. The center layer is known as the "base" and this is where the weak signal input is applied. The base and the collector are referenced to ground and the larger output signal is taken from the bottom layer (also known as the emitter). For the transistor to amplify the signal, at least one DC power source and additional capacitors and resistors will be required.

Transistors have long been in use, way before computers, calculators, radios and other modern electronic devices. The inventors of the transistor were awarded various prizes in the past, which shows how important the component is in our modern life.

Every year, it is estimated that over one billion transistors are produced. These components are known as discrete transistors. However, you will not find most of the transistors on the market on sale. Instead, the components are produced in circuit boards for various electronic gadgets. The transistors usually need capacitors, resistors, diodes and other electronic components to make the circuit board functional. Transistors can be used in any amount. For example, a BIFET may have 3 billion transistors.

Manufacturing a transistor is cheap and this explains why the component is produced in the billions. Moreover, the component is reliable and flexible. The number of transistor produced continues to increases as more electronic gadgets continue to be unveiled every year. Check this video about transistors:  https://www.youtube.com/watch?v=HqhE-8xXeCQ.