#electronics #electrical #electronicsmalayalam #engineering #hobby #physics #science #radio #MOSFET #transistor
A Field Effect Transistor (FET) is a three-terminal semiconductor device. Its operation is based on a controlled input voltage. By appearance JFET and bipolar transistors are very similar. However, BJT is a current controlled device and JFET is controlled by input voltage. Most commonly two types of FETs are available.
Junction Field Effect Transistor (JFET)
Metal Oxide Semiconductor FET (MOSFET)
Junction Field Effect Transistor
The functioning of Junction Field Effect Transistor depends upon the flow of majority carriers (electrons or holes) only. Basically, JFETs consist of an N type or P type silicon bar containing PN junctions at the sides. Following are some important points to remember about FET −
Gate − By using diffusion or alloying technique, both sides of N type bar are heavily doped to create PN junction. These doped regions are called gate (G).
Source − It is the entry point for majority carriers through which they enter into the semiconductor bar.
Drain − It is the exit point for majority carriers through which they leave the semiconductor bar.
Channel − It is the area of N type material through which majority carriers pass from the source to drain.
Негізгі бет Ғылым және технология MOSFET & FET പ്രാക്ടിക്കലായി അറിയേണ്ടതെല്ലാം വളരെ ലളിതമായി മലയാളത്തിൽ!!
Пікірлер: 187