A transistor is a semiconductor device. The earliest transistor were developed in 1947 by three American scientists.
Transistor are less easily damaged by bumps or vibrations. As transistor use very little current, they made it possible to produce battery-operated radios, tape recorders and television sets.
Transistor are made of semiconductor substances such as germanium and silicon. They can perform any of the following three functions: amplify, oscillate or operate as a switch.
There are two main classes of transistor:
Transistor are less easily damaged by bumps or vibrations. As transistor use very little current, they made it possible to produce battery-operated radios, tape recorders and television sets.
Transistor are made of semiconductor substances such as germanium and silicon. They can perform any of the following three functions: amplify, oscillate or operate as a switch.
There are two main classes of transistor:
- Bipolar transistor
- Field-effect transistor
The
P-N-P type is a transistor in which a thin slice of N-type
semiconductor is places between two pieces of P-type semiconductor.
The N-P-N consists essentially of a this slice of P-type semiconductor between two pieces of N-tyoe semiconductor.
The field-effect transistor (FET) is a unipolar transistor. There are two main types, JFET and MOSFET. There are two types of isolation which create two classes of FETs
IGFETs (insulated-gate-field-effect transistor) and JFETs (junction field-effect transistors).
The MOSFET is the most common type of IGFET.
IGFETs (insulated-gate-field-effect transistor) and JFETs (junction field-effect transistors).
The MOSFET is the most common type of IGFET.