Regions of operation, Electrical Engineering

Regions of operation:

Applied voltages

Mode

E < B < C

Forward active

E < B > C

Saturation

E > B < C

Cut-off

E > B > C

Reverse-action

Bipolar transistors have five different regions of operation that are described by BJT junction biases.

The modes of operation can be explained in terms of the applied voltages (this explanation applies to NPN transistors; polarities are reversed for PNP transistors):

1. Forward active: base higher than as compared to emitter, collector higher than base (in this type the collector current is proportional to base current by βF).

2. Saturation: base higher than as compared to emitter, but collector is not higher than base.

3. Cut-Off: base lower than as compared to emitter, but collector is higher than base. It means the transistor is not letting conventional current to go via collector to emitter.

4. Reverse-action: base lower than as compared to emitter, collector lower than base: reverse conventional current undergoes transistor.

Posted Date: 1/10/2013 6:43:36 AM | Location : United States







Related Discussions:- Regions of operation, Assignment Help, Ask Question on Regions of operation, Get Answer, Expert's Help, Regions of operation Discussions

Write discussion on Regions of operation
Your posts are moderated
Related Questions
How does the ITU make sure compatibility among the Radio systems used in dissimilar countries?  Why is regulation so significant?

compound generator drawback

Q. A single-phase, 3-kVA, 220:110-V, 60-Hz transformer has a high-voltage winding resistance of 0.3 , a low-voltage winding resistance of 0.06 , a leakage reactance of 0.8  on i

Importance of Voltage Quality - KPI The voltage quality has a growing economic impact on the customer and the network operators. The costs related along with "lack of quality"

Q. Determine briefly subscriber loop system.  Give some technical specification for subscriber lines. Ans: Subscriber Loop System: Each subscriber in a telephone network is

One of the simplest circuits is the asynchronous or ' ripple' counter. Below is shown the circuit diagram of a simple 3 stage ripple counter. The operation of this circuit

General Purpose Diodes The  general purpose  diodes  have relatively high reverse recovery time. The  diodes are general  made  by diffusion. They  are used  in low  speed  app

Discuss about signal distortion in optical waveguides Ans: The major reason for signal distortion within optical waveguide is dispersion. Dispersion of the transmitted

Wireless and Mobile Communication 1. Explain the architecture of Cellular Networks. 2. Discuss the fundamentals of GSM Network. 3. Explain briefly the different interface

Write down about the following terms: (i) Pirani Gauge (ii) Rotameter (iii) Hot wire Anemometer (iv) Drag Force Flow Meter