Forward and reverse-active in bipolar junction transistor, Electrical Engineering

Forward and Reverse-active in Bipolar Junction Transistor:

Forward-active (or simply, active):

The base-collector junction is reverse biased and base-emitter junction is forward biased. Several bipolar transistors are planned to afford the greatest common-emitter current gain, βF, in forward-active mode. If this is the case, the collector-emitter current is almost proportional to the base current, however many times larger, for small base current variations.

Reverse-active (or inverse-active or inverted):

By reversing the biasing situations of the forward-active region, a bipolar transistor departs into reverse-active mode. In this form, the emitter and collector regions switch roles. Since most BJTs are planned to maximize current gain in forward-active mode, the βF in inverted mode is many (2-3 for the ordinary germanium transistor) times smaller. This transistor mode is used rarely, generally being considered only for failsafe conditions and some sorts of bipolar logic. To the base reverse bias breakdown voltage might be an order of magnitude lower in this type of region.

Posted Date: 1/10/2013 6:44:47 AM | Location : United States







Related Discussions:- Forward and reverse-active in bipolar junction transistor, Assignment Help, Ask Question on Forward and reverse-active in bipolar junction transistor, Get Answer, Expert's Help, Forward and reverse-active in bipolar junction transistor Discussions

Write discussion on Forward and reverse-active in bipolar junction transistor
Your posts are moderated
Related Questions
Suppose that the x rays are emitted from a focal spot isotropically. The photon flux is 3.28 x 10 6 photons mm -2 sec -1 at a distance of 0.75 m from the focal spot. What is the


Types of Meter Test A meter should pass the subsequent two types of tests: Type Tests Routine Tests Meters are calibrated such in which the whole

Q. Explain about Communication Systems? Even though most modern communication systems have only been invented and developed during the eighteenth and nineteenth centuries, it i

A former employs a servant to look after his form house. He instructs the servant to keep a watch on his goat. So that he does not harm the kitchen garden, when the entrance-door


Explain the Power Transmission Lines Transmission and distribution of electric power is accomplished by using overhead lines or underground cables. Overhead lines are normally


Q. Which Steps are used for the procurement? a. Initially, an introductory letter may be sent addressed to The Head, NRSA Data Centre, National Remote Sensing Agency, Balanagar

what is vector impedense meter