Derive the equations of the self bias circuit, Electrical Engineering

Q. Derive the equations of the self bias circuit?

A circuit which is used to establish a stable operating point is the self biasing configuration. The circuit is shown in Fig

2260_Derive the equations of the self bias circuit.png

The physical reason for an improvement in stability with the circuit is the following:

If Ic increases or tends to increase because Ico has risen as a result of the elevated temperature, the current in Re increases. As a result of the voltage drop across Re the base current is decreased. Hence Ic will increase less than it would have, had there been no self biasing resistor Re.

Kirchoffs voltage law around the collector circuit yields

-Vcc + Ic (Re+Re) + Ie.Re+ Vce = 0

Kirchoffs voltage law around the base circuit is

V = Ie.Re+Vbe+(Ib+Ic)Re.

Hence in the active region the collector current is given by

Ic=bIb+(1+b)Ico.

Posted Date: 6/11/2013 2:11:15 AM | Location : United States







Related Discussions:- Derive the equations of the self bias circuit, Assignment Help, Ask Question on Derive the equations of the self bias circuit, Get Answer, Expert's Help, Derive the equations of the self bias circuit Discussions

Write discussion on Derive the equations of the self bias circuit
Your posts are moderated
Related Questions
Q. Show Basic Construction of MOSFET? The basic construction of the n-channel depletion-type MOSFET is provided in Figure. A slab of p-type material is formed from a silicon

the base of isosceles triangle and the altitude drawn from one of the congruent sides are equal to 18cm and 15cm, respectively. Find the lengths of the sides of the triangle.

Description of Capacitor r A capacitor has capacitance of one Farad when current charging of one Ampere flows in one second. This process causing a transferring of one volt in p

Data Copy Operations Instructions which  are used  to copy data from  one location to another  location kept in  this category. The location from  which data  is copied  is cal

details of commutator

Q. Interpretation and analysis using remote sensing? Interpretation and analysis using remote sensing Various characteristics of a river can be understood by studying its planf

MODULE 2 EXERCISE: OP-AMP CONFIGURATION

Q. Explain working of Ring Topology? Ring Topology: In ring topology, all user nodes are connected with physical path acting as links of a chain and last user node is co

Q. In the magnetic circuit shown in Figure the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may be a

V- I Characteristics The operation of the  diac can be explained by imagining it as two diodes connected  in series. When  applied voltage in either polarity is small ( less t