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

Different types of dc generation, Q.   What are the different types of dc g...

Q.   What are the different types of dc generation according to the ways in which fields are excited. Show the connection diagram of each type. Ans. Types of D.C.

Explain working of inverting summing amplifier, Q. Explain working of Inver...

Q. Explain working of Inverting Summing Amplifier? The circuit of Figure is extended by adding other input points, as shown in Figure. Because of the virtual ground at terminal

Determine the two possible ssb am signals, Let the modulating signal m(t) b...

Let the modulating signal m(t) be a sinusoid of the form m(t) = cos 2πf m t, f m c , and let the carrier signal be cos(2πf c t + φc). (a) Determine the conventional AM signal,

Plc, in industry

in industry

Preventive and regular maintenance, Preventive and Regular Maintenance ...

Preventive and Regular Maintenance Preventive and regular manages of components of the distributions system is necessary to reduce/eliminate breakdowns. Care should be taken t

Write discussion on Construction and working of analog type, Write discussi...

Write discussion on Construction and working of analog type storage oscilloscope

Centrifugal compressor, hi I need information of Compressor Shaft Impelle...

hi I need information of Compressor Shaft Impellers Coupling Hub Thrust Collars Balance Drum for centrifugal compressor with pecture

Dc generator, short note on armature reaction

short note on armature reaction

Determine the input current and input voltage, Q. A 100-kVA, 2300:230-V, 60...

Q. A 100-kVA, 2300:230-V, 60-Hz, single-phase transformer has the following parameters: R 1 = 0.30 , R 2 = 0.003 , RC 1 = 4.5k, X 1 = 0.65 , X 2 = 0.0065 , and Xm 1 = 1.

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