Emitter bias, Electrical Engineering

Assignment Help:

Emitter bias:

596_Emitter bias.png

Figure: Emitter bias

While a split supply (dual power supply) is accessible, this biasing circuit is the very much effective, and gives zero bias voltage at the emitter or collector for load. The negative supply VEE is employed to forward-bias the emitter junction by RE. The positive supply VCC is employed to reverse-bias the collector junction. Just only two resistors are essential for the common collector stage and 4 resistors for the common emitter or common base stage.

We know that,

VB - VE = Vbe

If RB is sufficiently small, base voltage will be almost zero. Hence emitter current is,

IE = (VEE - Vbe)/RE

The operating point is independent of β if RE >> RB

Merit:

Good stability of operating point identical to voltage divider bias.

Demerit:

This type can just only be used while a split (dual) power supply is available.


Related Discussions:- Emitter bias

Explain einstein relation, Explain Einstein relation. Einstein relation...

Explain Einstein relation. Einstein relation: There exists a significant relation between the diffusion constant and the mobility. It is termed as the Einstein relation and

Cost of initial investment, Based upon the following inputs, propose the op...

Based upon the following inputs, propose the optimal course of action for this venture: Probability of success: 30%; probability of failure: 30%; base case probability: 40%

CRO probe, #question. passive probe .

#question. passive probe .

Obtain expressions for the in-phase and quadrature component, Q. For DSB an...

Q. For DSB and conventional AM, obtain expressions for the in-phase and quadrature components x d (t) and x q (t), and envelope and phase v(t) and φ(t).

What is thermal runaway, Q. What is thermal runaway. The problem of sel...

Q. What is thermal runaway. The problem of self heating arises due to dissipation of power at the collector junction. The leakage current ICBO is extremely temperature dependen

Low pressure gas hazards, Low Pressure Gas Hazards : Safety screens and wi...

Low Pressure Gas Hazards : Safety screens and wire-mesh guards should be placed round evacuated glassware and safety goggles or a face shield must be worn against the possibility

#titleElectromagnetic Induction, Hello, I have some questions pertaining t...

Hello, I have some questions pertaining to electromagnetic induction. Could you please give me a hand? Thanks. If we increase the speed of the bar magnet slowly from 0 to 8, and

Determine the output voltage increment, (a) Design a 6-bit R-2 R ladder D/A...

(a) Design a 6-bit R-2 R ladder D/A converter. (b) For V ref = 10 V, find the maximum output voltage. (c) Determine the output voltage increment. (d) If the output voltag

Central energy conservation fund, Central Energy Conservation Fund Thi...

Central Energy Conservation Fund This fund is to be set up at the Centre to develop the delivery mechanism for large-scale adoption of energy efficiency services like as perfo

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