Regions of operation, Electrical Engineering

Assignment Help:

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.


Related Discussions:- Regions of operation

Induced emf, what is the difference between statically and dynamically indu...

what is the difference between statically and dynamically induced emf?

There are many advantages of plc - stepper motor , There are many advantage...

There are many advantages of PLC a.The PLC  was specifically designed for harsh  conditions with  electrical  noise magnetic fields vibration  extreme temperatures or humidit

Basic & Advance Building Wiring, Hello may i know if it is possible for me ...

Hello may i know if it is possible for me to teach online on electrical maters?

Bus organisation, Bus Organisation Set of  communication lines in micro...

Bus Organisation Set of  communication lines in microprocessor  which  carry  bits from microprocessor to  peripherals  ( memory  inputs ports  output  ports  and other chips

Why negative feedback is employed in wein bridge oscillator, Q. Why negativ...

Q. Why negative feedback is employed in Wein Bridge Oscillator. Also explain the working of oscillator? The Wein Bridge Oscillator consists of two stages of the RC coupled ampl

Explain direct data addressing mode, Direct data addressing mode (with exam...

Direct data addressing mode (with examples) available in microprocessors. Direct Mode: Instruction comprises memory access. CPU accesses which location into memo

Help, How do you be in Harward

How do you be in Harward

Dc generator, A 20kw 220v shunt generator has armature resistance of 0.07 a...

A 20kw 220v shunt generator has armature resistance of 0.07 and a shunt field resisitance 900 ohm find field loss?

Ac voltage controllers, Q. Explain AC voltage controllers? Common appli...

Q. Explain AC voltage controllers? Common applications for these controllers are found in fan, pump, and crane drives. Figure shows three-phase symmetrical ac voltage-controlle

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd