Fixed bias, Electrical Engineering

Fixed bias (base bias):

1496_Fixed bias.png

Diagram: Fixed bias (Base bias)

This type of biasing is also known as base bias. In the instance above figure, the single power source (for instance, a battery) is employed for both collector and base of transistor, even though separate batteries can as well be used.

In the given circuit,

Vcc = IBRB + Vbe

Hence,

IB = (Vcc - Vbe)/RB

For a specific transistor, Vbe does not change significantly during use. Since Vce is of fixed value, on selection of RB, the base current IB is fixed. Hence this kind is termed as fixed bias type of circuit.

As well for given circuit,

Vcc = ICRC + Vce

Hence,

Vce = Vcc - ICRC

The common-emitter current gain of a transistor is a significant parameter in circuit design, and is fixed on the data sheet for a particular transistor. It is represents as β on this page.

Because

IC = βIB

We can acquire IC as well. In this way, operating point given as (Vce,IC) can be set for specific transistor.

Posted Date: 1/10/2013 7:05:43 AM | Location : United States







Related Discussions:- Fixed bias, Assignment Help, Ask Question on Fixed bias, Get Answer, Expert's Help, Fixed bias Discussions

Write discussion on Fixed bias
Your posts are moderated
Related Questions
Low-pass electronic filter: The capacitors and inductors are the reactive elements of the filter. The number of elements ascertains the order of the filter. In this situation,

Q. If a feeder circuit-breaker trips, what action is needed? Ans: First isolate the faulty feeder check the faulty area on which fault the breaker was tripped (open circuit,

What do you maent by Debugger? Debugger: This is a program that allows user to debug and test programs. All computers with microprocessor kits give debugging facility. To not

transformer voltage induced in armatur of ac commentator machin in case tha field flux in sinosoidal?..

how thyristor work in speed control??

Qestions: a)  Draw the approximate equivalent circuit for a single phase power transformer. Identify all circuit elements and briefly explain their physical relevance. b)  S

Q. Explain the application of clippers. There are numerous clipper applications. In general clippers are used to perform one of the following two functions: · Changing the s

Q. Draw the differentiator circuit. Explain its principle of operation with necessary waveforms ? A circuit in which the output voltage is directly proportional to the derivati

1- phase  Full Bridge Inverter with R- Load 1-phase full  bridge inverter with resistive load R i it has  advantage over 1-? half  bridge  inverter that it does  not require

A rocket on a test stand is modeled as a column clamped at x = 0 and free at x = L, and subjected to compressive force P applied at the free end. The direction of load P remains