What is meant by biasing transistor, Electrical Engineering

Q. What is meant by biasing transistor?

The purpose of dc biasing of transistor is to obtain a certain dc collector current at a certain dc collector voltage. These values of current and voltage are expressed in terms of operating point. To obtain the operating point we make use of some circuits called biasing circuits. Only the fixing of a suitable operating point is not sufficient It must also be ensured that it remains there. In a transistor the operating point shifts with the use of circuit. Such a shift of operating point may drive the transistor into undesirable region. There two reasons for the shift of operating point. Firstly the transistor parameters are temperature dependent. Secondly the parameters (like beta) change from unit to unit. The requirements of biasing a transistor are: establish the operating point in the active region of the characteristics, so as that on applying the input signal the instantaneous operating point does not move to saturation or cut off region. Stabilize the collector current against temperature variations.

Make the operating point independent of transistor parameters so that it does not shift when the transistor is replaced by another of the same type of circuits.

Posted Date: 6/11/2013 5:45:39 AM | Location : United States







Related Discussions:- What is meant by biasing transistor, Assignment Help, Ask Question on What is meant by biasing transistor, Get Answer, Expert's Help, What is meant by biasing transistor Discussions

Write discussion on What is meant by biasing transistor
Your posts are moderated
Related Questions
Q. Sketch the depletion MOSFET drain characteristics The depletion-type MOSFET has a structure similar to that of the enhancement-type MOSFET with one important difference: The

The manufacturer of a 6V dry-cell flashlight battery says that the battery will deliver 15 mA for 60 continuous hours. During that time the voltage will drop from 6V to 4V. Assume

Q. What is right-through routing? In right-through routing, originating exchange determines complete route from source to destination. No routing decisions are taken at interme

Define the application of CAM/CAD to engineering design along with its benefits. a) A triangle is prepared by three position vectors A[2 4 1], B[4 6 1], C[2 6 1], get the reflec

Q. Show the r’s Complement? Step1- get the (r-1)'s complement Step 2- add 1 to the result ex.            935 10                                     9 9 9

Military Services - Application of Software Defined Radio With the use of SDR technology, the military can reduce radio development costs by providing a common platform to whi

what is the relationship between the inductance, capacitance and resistance in the 2-wattmeter experiment?

With a maximum excess delay of and a chip duration of , the multipath components fall in delay bins. This means that we experience leakage of energy between chips and the channel i

A button does some command in a program when it is clicked. Buttons generally have a 3-dimensional look, although you may have to move the mouse over the button for it to look 3D.

List the addressing modes supported by 8051. 1. Register addressing  2. Direct  addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres