What is the function of transistor PDF?
Transistors amplify current, for example they can be used to amplify the small output current from a logic IC so that it can operate a lamp, relay or other high current device. In many circuits a resistor is used to convert the changing current to a changing voltage, so the transistor is being used to amplify voltage.
What is transistor basic?
A transistor is an electronic component that is used in circuits to either amplify or switch electrical signals or power, allowing it to be used in a wide array of electronic devices. A transistor consists of two PN diodes connected back to back. It has three terminals namely emitter, base and collector.
What is transistor formula?
A transistors current gain is given the Greek symbol of Beta, ( β ). As the emitter current for a common emitter configuration is defined as Ie = Ic + Ib, the ratio of Ic/Ie is called Alpha, given the Greek symbol of α. Note: that the value of Alpha will always be less than unity.
What are the 2 types of transistors?
Transistors typically fall into two main types depending on their construction. These two types are bipolar junction transistors (BJT) and Field Effect Transistors (FET).
What is the main work of transistor?
transistor, semiconductor device for amplifying, controlling, and generating electrical signals. Transistors are the active components of integrated circuits, or “microchips,” which often contain billions of these minuscule devices etched into their shiny surfaces.
What is the symbol of transistor?
Table of transistor symbols
| Name | Description |
|---|---|
| PNP Bipolar Transistor | Allows current flow when low potential at base (middle) |
| Darlington Transistor | Made from 2 bipolar transistors. Has total gain of the product of each gain. |
| JFET-N Transistor | N-channel field effect transistor |
| JFET-P Transistor | P-channel field effect transistor |
What is Gamma in transistor?
Current Amplification Factor (γ) The ratio of change in emitter current (ΔIE) to the change in base current (ΔIB) is known as Current Amplification factor in common collector (CC) configuration. It is denoted by γ.
What is alpha and beta in BJT?
Alpha of a transistor is the current gain in common base configuration defined as the ratio of change in collector current to change in emitter current while beta is the current gain in CE configuration. It is defined as the change in collector current to base current.