Table of Contents
- 1 What are the terminals of a BJT transistors?
- 2 What is the most important application of transistors?
- 3 How do you find the terminal of a BJT?
- 4 Which element has biggest size in transistor?
- 5 What are 2 main applications where transistors are used directly?
- 6 Which transistor configuration has the highest input resistance?
- 7 What are the three terminals of a BJT?
- 8 What is the difference between base and emitter-base junction in BJT?
What are the terminals of a BJT transistors?
The BJT (bipolar junction transistor) is a current-controlled electronic device main employed for amplification and switching purpose. It comes with three terminals called emitter, base, and collector. The small current at the base side is used to control the large current at the remaining terminals.
Which terminal current of BJT is largest why?
The reason the collector is the largest region is because it is the region which receives the majority of the current carriers, which for a npn transistor are electrons and for pnp transistors are holes. The collector receives the current carriers from the base and the emitter regions of the transistor.
What is the most important application of transistors?
Transistors are commonly used in digital circuits as electronic switches which can be either in an “on” or “off” state, both for high-power applications such as switched-mode power supplies and for low-power applications such as logic gates.
Which terminal of BJT is highly doped?
The emitter region is the most heavily doped area of the transistor. The emitter contains the largest amount of charge carriers out of all regions in the transistor.
How do you find the terminal of a BJT?
Bipolar Junction Transistor (BJT) In plastic casing, one side of the transistor is Flat which is the front side and the pins are arranged serially. To identify the pins, keep the front flat side facing you and count the pins as one, two etc. In most NPN transistors it will be 1 (Collector), 2 (Base) and 3 ( Emitter ).
Which terminal of the BJT is larger than the others?
Answer: The collector region is the largest of all regions because it must dissipate more heat than the emitter or base regions. It is designed to be large because in order to dissipate all the heater, the extra surface area allows it to do so. …
Which element has biggest size in transistor?
The element that has the biggest size in a transistor is Collector.
- A transistor is made of three elements emitter, collector, base.
- Emitter works as a negative lead, collector works as a positive lead and base helps to activate the transistor.
Why was the transistor so important?
The transistor went on to replace bulky vacuum tubes and mechanical relays. The invention revolutionized the world of electronics and became the basic building block upon which all modern computer technology rests.
What are 2 main applications where transistors are used directly?
Here we list the applications of transistors. (practical applications of transistors ) :
- Transistors are used in digital and analog circuits as a switch.
- uses in signal amplifier devices.
- Cellular phones would be one of the most widely used applications of transistors.
- uses in power regulator and controllers.
How many terminal does the transistor has?
three-terminal
Transistor – a three-terminal device for which the voltage or current at one terminal controls the electrical behavior of the other terminals. Bipolar Junction Transistor (BJT) – a three-terminal device for which the current at one terminal controls the electrical behavior of the other terminals.
Which transistor configuration has the highest input resistance?
Detailed Solution
| Characteristics | CB configuration | CC configuration |
|---|---|---|
| Input resistance | Very low (40 Ω) | Very high (750 kΩ) |
| Output resistance | Very high (1 MΩ) | Low (50 Ω) |
| Current Gain | Less than unity | High (100) |
| Voltage Gain | Large | Low |
What does BJT mean in electronics?
Transistors: Bipolar Junction Transistors (BJT) General configuration and definitions The transistor is the main building block “element” of electronics. It is a semiconductor device and it comes in two general types: the Bipolar Junction Transistor (BJT) and the Field Effect Transistor (FET).
What are the three terminals of a BJT?
The three terminals of the BJT are called the Base (B), the Collector (C) and the Emitter (E). C C BB EE n n p (a) npntransistor C C BB EE n p p (b) pnptransistor Figure 1. BJT schematics and structures. (a) npntransistor, (b) pnptransistor B E C Base-Emitter junction Base-Collector junction Base-Collector junction Base-Emitter junction B E C
What is the difference between BJT and unipolar transistors?
While Unipolar transistor i.e. field effect transistor uses only one type of charge carrier. BJT is a current controlled device. The current flows from emitter to collector or from collector to emitter depending on the type of connection. This main current is controlled by a very small current at the base terminal.
What is the difference between base and emitter-base junction in BJT?
The base is always reverse bias with respect to emitter so that it can emit a large number of majority carriers. It is the most heavily doped region of the BJT. The emitter-base junction should be always forward bias in both PNP and NPN transistors.